[Q] Question regarding HSPA+ technicality - G2 and Desire Z Q&A, Help & Troubleshooting

I'm not versed in spectrum-talk, so here it goes: Why is it that T-Mobile HSPA+ states peak speeds of 21.6 Mbps, yet the G2 states peak speeds of 14.4 Mbps?
Also, what is the difference between HSDPA+ and HSPA+?

The HSPA+ network is capable of 21 Mbps, but the HSPA+ radio chip in the G2 is only rated at 14.4 Mbps. Currently the only device tmobile has that is capable of 21 Mbps is the web connect rocket.
HSPA = High Speed Packet Acces
HSPA includes both
HSDPA = High Speed Downlink Packet Access
and
HSUPA = High Speed Uplink Packet Access
HSPA+ = HSPA of 14.4 Mbps or faster (21 Mbps or the next step is 42 Mbps.

joebobjoe said:
I'm not versed in spectrum-talk, so here it goes: Why is it that T-Mobile HSPA+ states peak speeds of 21.6 Mbps, yet the G2 states peak speeds of 14.4 Mbps?
Also, what is the difference between HSDPA+ and HSPA+?
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Click to collapse
HSPA+(3.75G) is actually newer and faster than HSDPA+(3.5G). In terms of speed, theoretically HSPA+ can reach speeds of 56Mbit/s while HSDPA+ can reach 21Mbit/s. Though in really the fastest your going to get for HSPA+ is 21.6 Mbps. As for why the G2 14.4 Mbps I have no clue. but its faster then my home internet

mtl171,
Technically HSPA+ consists of HSDPA+ and HSUPA+ just like HSPA contains both HSDPA and HSUPA.
I agree that we are unlikely to see HSPA+ networks faster than 21 Mbps in the U.S., I think carriers including T-Mobile will be investing in LTE before 42 Mbps HSPA+ especially since the speed on 21 Mbps is on par with many home broadband connections.
LTE has more benefits for carriers than just speed.

atlp99 said:
Technically HSPA+ consists of HSDPA+ and HSUPA+ just like HSPA contains both HSDPA and HSUPA.
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Click to collapse
my bad. forgot about that.
atlp99 said:
I agree that we are unlikely to see HSPA+ networks faster than 21 Mbps in the U.S., I think carriers including T-Mobile will be investing in LTE before 42 Mbps HSPA+ especially since the speed on 21 Mbps is on par with many home broadband connections. LTE has more benefits for carriers than just speed.
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True. though i thought Verizon and AT&T were going for LTE while T-Mobile and Sprint are going with Wi-Max. though i might be mistaken...

Well there are rumors about a merger between Clearwire and T-Mobile.
Anyway, does HSDPA+/HSPA+ rely on MIMO?

Sprint is the only carrier using WiMax
T-Mobile is also going to LTE.
Verizon , ATT, and T-Mobile have all committed to LTE for long term 4G networks.
Sprint is the only one using WiMax, and there is a chance they will switch to LTE also in the long run. Clearwire (which Sprint the majority shareholder) has indicated that their WiMax network could be converted to LTE without much effort.
T-Mobile is deploying HSPA+ currently before deploying LTE.
This makes sense to me, since the speeds of HSPA+ are higher than LTE will be at launch and T-Mobile does not have the network congestion problems that ATT and Verizon have. The biggest advantage of LTE is increased network capacity because of more efficient spectrum usage. I don't think that LTE speeds will pass HSPA+ speeds for at least a couple of years, but LTE has the potential to be faster in the long run.
Verizon is starting to deploy LTE for data cards the end of this year and is rumored to be launching LTE handsets towards the last half of 2011. Depending on the rumors, they may be running behind due to issues with calling over LTE but there are conflicting rumors at this point.

Joebojoe,
HSPA+ running at 42 Mbps and above technology similar to MIMO to download from 2 towers simultaneously.
There are rumors about a Clearwire and T-Mobile partnership. It could make sense for them to partner together for a LTE network roll out, and Clearwire has indicated that it could switch its network over to LTE or run LTE and WiMax.
The other option that has been rumored is that T-Mobile would simply buy some of the excess spectrum that Clearwire has.
Either of those options could make sense, but are just rumors with no real facts to support them. It's fun speculating though.

Thanks for the reply, yet I'm still curious why the G2 is labelled HSPA+ yet only supports 14.4 Mbps. 14.4 Mbps sounds more like HSDPA to me.

joebobjoe said:
Thanks for the reply, yet I'm still curious why the G2 is labelled HSPA+ yet only supports 14.4 Mbps. 14.4 Mbps sounds more like HSDPA to me.
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idk. design limitations? its still plenty fast. highly doubt people actually get 14.4 Mbps on a HSDPA connection.
Update: its design limitations. According to Qualcomm's website, "MSM7230(proccessor used in G2) support for HSPA+ networks - up to 14 Mbps downloads and 5.76 Mbps uploads"

Like mtl171 posted the 14.4 Mbps speed on the G2 is a limitation of the chipset. I don't think any of the chipsets available for phones HSPA+ at 21 Mbps. The next generation 1.2 and 1.5 Ghz Snapdragon chipsets are supposed to be capable of faster data speeds (if i remember correctly)but they have not reached the market yet.
Joebobjoe,
HSPA and HSPA+ are basically versions of the same technology Hspa+ is the newest iteration. The main difference is the speed.

Please explain... if there are chipsets that support it for the usb dongle, why can't the same thing work on a phone? Have they just not made the chipset small enough for a phone yet?

rpmccormick said:
Please explain... if there are chipsets that support it for the usb dongle, why can't the same thing work on a phone? Have they just not made the chipset small enough for a phone yet?
Click to expand...
Click to collapse
patience young one the geniuses at qualcomm are working on this. meanwhile we just need to patiently wait a year or so for them to release it

Aren't those chipsets coming out in January?

joebobjoe said:
Aren't those chipsets coming out in January?
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to tell you the truth, i don't know. but my guess is phones released next year should support it.

Last I heard the 1.2 Ghz Snapdragon chipsets should be released to handset manufacturers late this year or early next year. Then add a couple of months for manufacturers to get handsets built with them, so probably late Q1 for those handsets to get market
rpmccormick,
The chipset in the usb dongle only has to transmit data, it does not have support the other functions of a phone (O.S., wifi, Bluetooth, screen, audio, video, power management, etc..), plus since the usb pulls power from your computer so power management is not as important. The usb dongle uses a much simpler chipset, that only has to transmit data while your computer handles everything else.

atlp99 said:
Last I heard the 1.2 Ghz Snapdragon chipsets should be released to handset manufacturers late this year or early next year. Then add a couple of months for manufacturers to get handsets built with them, so probably late Q1 for those handsets to get market.
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1.2 ghz early next year. 1.5 dualcore Q4 next year.
http://androidandme.com/2010/09/news/is-qualcomm-and-htc-in-trouble-with-their-dual-core-processors/

Bringing this back since its relavant now....
So just found out about the new Samsung Galaxy S 4g with the new chipsets that give 21+ theroetical speeds....
I am a VERY VERY angry G2 owner who while loves my phone am very upset to find that I will be getting much less speeds out of their network labeled the SAME on both devices. I think this was a VERY deceiving move and hope that with enough complaints we can get some sort of retribution like lower data plan price or what not (the what not are better solutions like a free upgrade but i know those things dont happen as easy)
The only hope is that it can be updated to use 21+ from 14+ but this is HIGHLY unlikely.
Im curious to see what others think of this?
EDIT: this is a smart forum so lets not discuss the fact that not all areas will have that speed and just pretend that im in a market that already is pushing that when using one of those usb sticks..

no6969el said:
So just found out about the new Samsung Galaxy S 4g with the new chipsets that give 21+ theroetical speeds....
I am a VERY VERY angry G2 owner who while loves my phone am very upset to find that I will be getting much less speeds out of their network labeled the SAME on both devices. I think this was a VERY deceiving move and hope that with enough complaints we can get some sort of retribution like lower data plan price or what not (the what not are better solutions like a free upgrade but i know those things dont happen as easy)
The only hope is that it can be updated to use 21+ from 14+ but this is HIGHLY unlikely.
Im curious to see what others think of this?
EDIT: this is a smart forum so lets not discuss the fact that not all areas will have that speed and just pretend that im in a market that already is pushing that when using one of those usb sticks..
Click to expand...
Click to collapse
I wouldn't worry about it too much. If you had a 4G galaxy s side by side with a G2 the galaxy s would very rarely achieve higher speeds. The G2 is a high end android phone that will not be obsolete anytime soon. You could always hold out for the next great phone but no matter what there will always be something better in a few months.
You should be happy about your decision to buy a G2 because its a fast, solid device and still the best phone in Tmo's lineup.
Sent from my HTC Vision using XDA App

Seriously you are getting that upset? Why do people get so uptight about so many things? Like the previous poster stated, real world is different. But technology moves forward, it doesn't stop for anyone. Life is much more difficult then getting one or two mbps less then another phone. I would be more upset if we never get a gingerbread update (yeah I know I would never use it seeing as I'm a xda member running cm7) simply because of principal. The whole vibrant fiasco would have me really ticked. It wasn't until people really started calling it out and got really loud did things really happen.
Sent from my HTC Vision

Related

new WP7 for ATT in the near future??

i spoke to a guy at ATT the other day and he told me that theyre going to be releasing a new wp7 for att in late march/ early april...
its supposed to be 4g the whole 9 yards i guess..
has anybody else heard of this or have any details on it??
im running 2g on an unlocked tmobile hd7 and its be good to have a similiar phone running on H+ or at least 3g
Haven't heard anything myself. If they do, I just hope its an HTC solid body.
I read a rumor on a site(WMpower?) that the hd7 may be coming. Don't know if that would help you out though
Well.... the focus can do 4g speeds right now they just have it throttled down by default. So technically ATT already has a wp7 4g phone.
Focus 4G speed settings
I can tell you this much... Both my wife and I have the focus and after I applied the changes I was getting speeds on mobile speed test roughly 2 times faster then she was.... I was getting speeds between 2000 kbps (just under what they have 4G speeds at) and around 3000 kbps or more (well over what they have listed as 4G)
I just did a speed test a second ago and I'm at 2336 kbps.. my wife's is under 1000... same place.. same phone... way WAY different speeds
Aaron McCarthy said:
Well.... the focus can do 4g speeds right now they just have it throttled down by default. So technically ATT already has a wp7 4g phone.
Focus 4G speed settings
I can tell you this much... Both my wife and I have the focus and after I applied the changes I was getting speeds on mobile speed test roughly 2 times faster then she was.... I was getting speeds between 2000 kbps (just under what they have 4G speeds at) and around 3000 kbps or more (well over what they have listed as 4G)
I just did a speed test a second ago and I'm at 2336 kbps.. my wife's is under 1000... same place.. same phone... way WAY different speeds
Click to expand...
Click to collapse
That's a bit misleading. The specs on the Samsung Focus state that it has HSDPA and HSUPA support, which equate to HSPA when both are enabled.
4G is considered to be LTE or WiMax (and even still, those technologies are considered pre-4G). The problem is that T-Mobile is marketing their HSPA+ network as a 4G network. Currently, Sprint has a 4G roadmap using Clear's WiMax network. Verizon has already begun building out their LTE network. AT&T is wrapping up their HSPA+ rollout before they begin on the LTE network. Since they are late in the marketing game, AT&T has gone to T-Mobile's level and marketed their HSPA+ network as 4G.
Ultimately, out of the 4 carriers above, T-Mobile will shoot themselves in the foot by not having a true 4G rollout plan and relying on marketing their HSPA+ network as 4G.
Bottomline -- Samsung Focus supports HSPA, not HSPA+ or LTE.
Michael.

Sensation...less?

So, PCmag wrote that the Sensation barely meets the "4g" standard.
For those of you getting the phone, will it really matter? it's not like we're hitting high hspa+ speeds anyways.
here's a link. are we allowed to post links? errr.
http://mobile.pcmag.com/device2/art.../www.pcmag.com/article2/0,2817,2386286,00.asp
There really is not speed requirement in the 4G standard anymore. The ITU caved to the carriers and ruled in December that any of the evolved 3G technologies can be considered 4G as long as:
"a substantial level of improvement in performance and capabilities with respect to the initial third generation systems now deployed."
http://en.wikipedia.org/wiki/4G#ITU_Requirements_and_4G_wireless_standards
Pretty much BS, but basically as long as the network is better than 3G, it can be considered 4G. Surprising that supposedly knowledgeable sources like PCMag are getting this wrong. Saying the Sensation is "not 4G" is simply wrong by the current standard.
Also surprising that the Sensation does not support data speeds higher than 14.4 Mbps. I thought this new generation of Snapdragon (dual core, >1GHz) is supposed to support higher download speeds? 14.4 Mbps is the same cap we have on our Visions.
redpoint73 said:
There really is not speed requirement in the 4G standard anymore. The ITU caved to the carriers and ruled in December that any of the evolved 3G technologies can be considered 4G as long as:
"a substantial level of improvement in performance and capabilities with respect to the initial third generation systems now deployed."
http://en.wikipedia.org/wiki/4G#ITU_Requirements_and_4G_wireless_standards
Pretty much BS, but basically as long as the network is better than 3G, it can be considered 4G. Surprising that supposedly knowledgeable sources like PCMag are getting this wrong. Saying the Sensation is "not 4G" is simply wrong by the current standard.
Also surprising that the Sensation does not support data speeds higher than 14.4 Mbps. I thought this new generation of Snapdragon (dual core, >1GHz) is supposed to support higher download speeds? 14.4 Mbps is the same cap we have on our Visions.
Click to expand...
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Now that what you call a response. Totally serious, I'm not talking smack this time.
Cheers
Sent from my T-Mobile G2 using XDA Premium App
Spastic909 said:
Now that what you call a response. Totally serious, I'm not talking smack this time.
Cheers
Click to expand...
Click to collapse
LOL, thanks dude!
Haha... I didn't even know that was an official ruling! Funny. I always thought the 4G marketing from ALL the carriers was hilarious. WE have REAL 4G! No.. WE do..! No.. etc, etc... When I heard that "real" 4G was a theoretical peak of 100 Mbps, I laughed even harder. The way I always "defined" 4G for people is "it's faster than the old network". Who cares if its HSPA+ or LTE or WiMax or UltraHyperYAY! technology, if it's faster than what we had before... well I guess that's 4G. As good an answer as we are likely to get. I'm getting about 7 Mbps since T-Mo "upped" their HSPA+ network, and I can't complain about speeds like that. I don't care if it's 3G, 4G, 5G.... meh. It's fast. I like.

For the many of you that don't understand/don't "believe" in network vision...

For the many of you that don't understand/don't "believe" in network vision...
Android police posted this article which is actually pretty informative.
http://www.androidpolice.com/2012/0...ce-but-the-800mhz-rollout-will-drop-your-jaw/
mattykinsx said:
Android police posted this article which is actually pretty informative.
http://www.androidpolice.com/2012/0...ce-but-the-800mhz-rollout-will-drop-your-jaw/
Click to expand...
Click to collapse
...I understand the underlying concepts and already knew that's what the 800mHz band was capable of....but...to see it laid out like that--even as overly optimistic as internal corporate presentation slides likely are--holy ****.
Thanks for the post...I gotta admit, my jaw dropped as well.
daneurysm said:
...I understand the underlying concepts and already knew that's what the 800mHz band was capable of....but...to see it laid out like that--even as overly optimistic as internal corporate presentation slides likely are--holy ****.
Thanks for the post...I gotta admit, my jaw dropped as well.
Click to expand...
Click to collapse
I've talked to Sprint technicians that are working on the project and they truly believe this will bring them inline with, or better than, the big two.
And that seems very likely.
Lets just hope they keep unlimited data and don't turn into At&t and Verizon.
I've had Sprint for able 6 years, my family has had it for I wanna say 15+, they've had their ups and downs but I believe it's a stable cell phone provider. I can't ever picture myself without it loving my speeds, loving my service (I currently live in the country AND getting 4G) I'll always be a loyal sprint customer and this link you posted makes me happy haha
Anyone have the link to check and see if you have tower updates in your area in the past 6 months or scheduled?
Oh wow...I knew Network Vision was supposed to give them a boost but I didn't think it'd be this much of a boost.
cds0699 said:
Anyone have the link to check and see if you have tower updates in your area in the past 6 months or scheduled?
Click to expand...
Click to collapse
network.sprint.com
It burns when I tapatalk...
Still impresses me every time I see it, thanks for the reminder of what's to come.
It burns when I tapatalk...
I've learned over the years to believe it when it is done rather than believe the powerpoint.
There are always caveats like, coverage is factoring in 800MHz, but some phones aren't FCC certified to work at 800MHz even though they might be otherwise capable (Photon comes to mind)
Are they running both the 1xAdvanced voice and EVDO carrier at 800 in every market on just the voice carrier or only augmented 800 in select markets? If some markets only get LTE on 800, then that won't help our phones out.
Conceptually Network Vision is the right thing to do, but there can be a significant difference between the design and implementation. The latter is where they usually see the unanticipated issues.
So yeah, it looks good on paper, let's see it in action.
Beejis said:
network.sprint.com
It burns when I tapatalk...
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Thank you very much.
Hopefully Sprint does not have too much trouble raising the additional $3 billion needed to complete Network Vision.
I just went on an ADD fueled wikipedia/internet spree because I realized as I was reading that article that I knew nothing about sprints actual network or network at all. I had to keep looking up each term, staring further down Sprint's rabbit hole. I found a lot of interesting information but what really stunned me was that WiMax 4G network runs at 2.5Ghz. By comparison, Verizon's LTE network, which technically by definition is not a true 4G network, runs at 700Mhz.
I cannot wait for this upgrade to come to my area soon enough.
My area:
Past 6 months: 3 data speed upgrades
Planned: 4 data capacity upgrades
Nice!
doesn't Verizon use a 700mhz wavelength for lte which would make better
Sent from my SPH-D710 using xda premium
Well i just speed tested both a sprint EvDo revA and roamed on versizons EvDo rev0.... Guess what. I got 1.2mb/sec on sprint ( its 3am here so ones on the towers) on verizon i got 1.9mb/sec.... Wtf!?!? I though EvDo revA was way faster than Rev0!? Yet rev0 its litterally 80% faster! Please, some one explain this to me. Please, this is actually a serious queztion
Sent From My Epic Touch 3g
bluefire808 said:
Well i just speed tested both a sprint EvDo revA and roamed on versizons EvDo rev0.... Guess what. I got 1.2mb/sec on sprint ( its 3am here so ones on the towers) on verizon i got 1.9mb/sec.... Wtf!?!? I though EvDo revA was way faster than Rev0!? Yet rev0 its litterally 80% faster! Please, some one explain this to me. Please, this is actually a serious queztion
Click to expand...
Click to collapse
Rev0 vs RevA is just the air interface. If you connect a fast air connection to a slow backhaul then the lowest common denominator is the backhaul and that will limit your speeds. If there are too many people on the tower sharing the limited bandwidth, that will limit your speeds too.
If you connect a 802.11n wireless router to a 56k modem, what would you expect your Internet speeds to be? That is analogous to what is happening with Sprint, though the backhauls are more capable (and also shared amongst more people)
Assuming you are sure the Verizon connection was Rev 0, it is theoretically capable of 2.45Mbps while Rev A is theoretically capable of 3.1Mbps. Drop around 18-20% for actual use and you get the real-world #s.
So a fast Rev0 could easily beat a rate limited RevA on the download side.
Now the upload side, RevA beats Rev0 by more than an order of magnitude. .15M vs 1.8M theoretical. I'd be surprised if a Rev0 uplink beat a RevA uplink, but if the towers are overloaded enough, anything can happen.
sfhub said:
Rev0 vs RevA is just the air interface. If you connect a fast air connection to a slow backhaul then the lowest common denominator is the backhaul and that will limit your speeds. If there are too many people on the tower sharing the limited bandwidth, that will limit your speeds too.
If you connect a 802.11n wireless router to a 56k modem, what would you expect your Internet speeds to be? That is analogous to what is happening with Sprint, though the backhauls are more capable (and also shared amongst more people)
Assuming you are sure the Verizon connection was Rev 0, it is theoretically capable of 2.45Mbps while Rev A is theoretically capable of 3.1Mbps. Drop around 18-20% for actual use and you get the real-world #s.
So a fast Rev0 could easily beat a rate limited RevA on the download side.
Now the upload side, RevA beats Rev0 by more than an order of magnitude. .15M vs 1.8M theoretical. I'd be surprised if a Rev0 uplink beat a RevA uplink, but if the towers are overloaded enough, anything can happen.
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That was just the info i needes. I had also wiki'd it and saw that too. But i like your real world explanation. Yup 2Mb/sec on verizon rev0 and 1.2Mbsec on sprinta revA. Eh o well. Thanks again for getting back to me. Big props to you brother!
Sent From My Epic Touch 3g
iSkylla said:
I found a lot of interesting information but what really stunned me was that WiMax 4G network runs at 2.5Ghz. By comparison, Verizon's LTE network, which technically by definition is not a true 4G network, runs at 700Mhz.
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Click to collapse
They have a wider bit of spectrum down there at 700mhz at a much lower wavelength. WiMax and LTE are pretty much just protocols. Verizon's LTE would suck on that thin slice of 2.5gHz and Sprint's WiMax would kick ass at 700mHz....roughly....and that's not taking into considering signal propagation and obstruction penetration.
My 3G speeds suck... but who cares, 4G has gone through the roof down here.
3mb/s -> 9mb/s in my living room
5mb/s -> 18mb/s in my friend's house
I'm gonna go drive all over and run speed tests now.
Orrr... they are showing the map like that because there won't be any buildings in 2013 to penetrate.
Food for thought gentleman.
PS. Jk
Sent from my SPH-D710 using xda premium

no 4G?

hi
i recently got a nexus from google.
it woks like a charm but i notice i have never gotten 4G on my phone.
i know there is cus my friend has 4G on his GS2.
so any one knows why is my phone not connecting to 4G network?
any help will be appreciated
PS: the APN i have is epc.tmo.com
HSPA+ (the H icon) is the same thing as T-Mobile's "4G."
Sent from my Galaxy Nexus using Tapatalk 2
its weird, i get a 3G icon then it changes to an H. but when i go to settings i dont have the network mode option to choose from.
C0dy said:
HSPA+ (the H icon) is the same thing as T-Mobile's "4G."
Sent from my Galaxy Nexus using Tapatalk 2
Click to expand...
Click to collapse
It wasn't built to display HSPA+ as 4G for T-Mobile.
Google and rest of Europe considered it plain old 3G.
HSPA+ is not true 4G. It's considered 4G because it's almost as fast as 4G but it's not and people don't mind being tricked by that. They want to feel good about their phone. So they simply accept it.
I would just to brag about it. =p
Look at the AT&T 4S, it has HSPA+ but they don't advertise it as 4G. They just say it's faster then normal 3G.
That's why all my friends on AT&T with a 4S and jailbroken just get winter board and change the 3G to 4G and say they got 4G.
It's as fast so they say, "WTH!!! Let's make people feel like they got 4G and see a symbol that says so, even though they know they don't."
That is why you dont see 4G.
Ahh ok. Im asking cus someone told me i needed a new sim card. But thanks
Sent from my Galaxy Nexus using XDA
Yeah I understand why you would be confused. U assume it's 4G since it's as fast. =p
I'd do the same unless I'm told. And since I found out when the 4S came out (I was confused at first), I learned it's just simple 3G on steroids.
Actually one of the firmware updates to the 4S revised the indicator so now it *does* say 4G on AT&T. Which is frustrating because non-technical types now say things like "Well my son didn't get 4G on his Verizon 4G phone in our area, but I get 4G on my AT&T iPhone, so I guess AT&T has better 4G."
I know.
Advertising something that is not true. They can trick people into thinking that the AT&T 4S is better and make people think they have more 4G coverage.
Technically it does since it's considered just as fast. But technically isn't good enough.
DLD511 said:
I know.
Advertising something that is not true. They can trick people into thinking that the AT&T 4S is better and make people think they have more 4G coverage.
Technically it does since it's considered just as fast. But technically isn't good enough.
Click to expand...
Click to collapse
The iPhone 4S utilizes HSPA+ just like the Galaxy Nexus. The only difference is that the 4S has an HSPA+ radio that is limited to 14.4Mbps, just like early T-Mobile HSPA+ devices like the G2x. The Nexus has a 21Mbps radio. Functionally, there isn't a whole lot of difference.
Fortunately, we should see true 4G in the states soon, as T-Mobile plans to roll out LTE-Advanced; which, unlike AT&T, Sprint and Verizon's LTE, is the version that actually complies to all of the initial 4G standards, which are not limited to speed. Unfortunately, it will likely still be quite a while before we see speeds of 100Mbps / 1Gbps, which are also one of the requirements. The backhaul and infrastructure for such a network simply aren't utilized in the US. Also, I don't think we really need speeds like that. The initial LTE we have now is still a battery drainer, where HSPA+ still excels in efficiency. The main benefit of LTE and LTE Advanced is changing from a circuit switched network to a fully IP based system, which HSPA+ partially supports.
Correction: The 4S uses HSDPA+HSUPA, which is close but not identical to HSPA+.
HSDPA+HSUPA Release 6
HSPA+ Release 7
LTE Release 8
LTE Advanced Release 10
3G is UMTS. 4G is HSPA/HSPA+
4G and 3G are not the same in these terms.
"Long is the way, and hard, that out of hell leads up to light."
T-Mobile's LTE gonna be at 48mbps correct??? Gonna be damn fast.
Here's Verizon speeds.
DLD511 said:
T-Mobile's LTE gonna be at 48mbps correct??? Gonna be damn fast.
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Click to collapse
T-Mobile's HSPA+ is already at 48Mbps in most cases. No word on the max speed for LTE Advanced yet.
Keep in mind that maximum theoretical speed and maximum real usage speed are two different things, but LTE Advanced supposedly reduces a lot of the issues that HSPA+ has, including the speed degradation that HSPA+ has when it comes to distance from the tower and interference.
Also, to be honest, speed tests are just like benchmarks. They really don't show realistic results most of the time. Besides, most of us really only use about 250kbps-3Mbps in actual real time usage, at best and on high load.
JaiaV said:
T-Mobile's HSPA+ is already at 48Mbps in most cases. No word on the max speed for LTE Advanced yet.
Keep in mind that maximum theoretical speed and maximum real usage speed are two different things, but LTE Advanced supposedly reduces a lot of the issues that HSPA+ has, including the speed degradation that HSPA+ has when it comes to distance from the tower and interference.
Also, to be honest, speed tests are just like benchmarks. They really don't show realistic results most of the time. Besides, most of us really only use about 250kbps-3Mbps in actual real time usage, at best and on high load.
Click to expand...
Click to collapse
Verizon got to play serious catch up on speed.
DLD511 said:
T-Mobile's LTE gonna be at 48mbps correct??? Gonna be damn fast.
Click to expand...
Click to collapse
They're already on 48mbps HSPA+. When they deploy LTE, it'll be LTE-Advanced, which is the next iteration above the current LTE deployments by AT&T/Verizon.
DLD511 said:
Here's Verizon speeds.
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Click to collapse
cool story.
Verizon gonna do this too???
DLD511 said:
Verizon gonna do this too???
Click to expand...
Click to collapse
Verizon's still busy implementing Release 9 LTE. Less incentive for them to upgrade to LTE Advanced, but possible the groundwork has already been laid for it, not entirely certain of what the differences between the hardware needed at the cell site or the hardware needed in the handset have to be.
JaiaV said:
Verizon's still busy implementing Release 9 LTE. Less incentive for them to upgrade to LTE Advanced, but possible the groundwork has already been laid for it, not entirely certain of what the differences between the hardware needed at the cell site or the hardware needed in the handset have to be.
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Bet it's gonna **** on the battery.... again.
DLD511 said:
Bet it's gonna **** on the battery.... again.
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LTE is quite horrible for battery life. I'm not sure what the difference LTE Advanced will make. I do know that one of the reasons LTE battery life is poor is that LTE coverage is relatively sparse for the time being, as the radio is having to work harder to get and keep a signal than it would if LTE coverage were as prevalent as HSPA+ coverage is.

Difference between 4G and LTE?

LTE and 4G are the same? because i know that glide doesnt has lte, but when i use the mobile data, i see the 4G icon. i always have that question. thanks
4g is hsdpa+, which is slightly above 3g, but not quite 4g. It still is fast enough
Sent from my SGH-I927 using xda app-developers app
Laugher19 said:
4g is hsdpa+, which is slightly above 3g, but not quite 4g. It still is fast enough
Sent from my SGH-I927 using xda app-developers app
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Then , is better than 3.5G ? (here we know that like 3g and 3.5g). Thanks, for your help thats clear me that question (sorry for my english )
It pretty much is 3.5g.
Sent from my SGH-I927 using xda app-developers app
To give you an idea, LTE can "theoretically" max at 300 mbps (mbps = mega bits per second -- most carriers/ISP's provide this), which would translate to 37.5 megabytes/sec. Do you get that now? Very unlikely. Friends who have LTE are only getting around 24 mbps, which is still really fast.
HSPA+, which is what AT&T's "4G" (not 4G LTE -- it's the 3.5G) as well as T-Mobile's has a peak of about 42 mbps -- and I've seen folks here (Houston) get really close to that in speed -- which translates to a little over 5 megabytes/sec.
T-Mo and AT&T are actively working to get more and more LTE towers and service created (they have HSPA+). T-Mo hasn't rolled theirs out at all, except I think for testing in a few select, small markets, if I remember correctly. AT&T has service in LTE already established.
LTE is the way of the future at the moment. Kind of like the HD-DVD vs bluray debacle years ago -- LTE won out over another 4G technology, WiMax, which was on several earlier phones on Sprint. Sprint finally conceded it lost and start building out an LTE network to replace their WiMax one.
Hopefully, that's a NICE BIG chunk of knowledge that you can partially digest.
terinfire said:
To give you an idea, LTE can "theoretically" max at 300 mbps (mbps = mega bits per second -- most carriers/ISP's provide this), which would translate to 37.5 megabytes/sec. Do you get that now? Very unlikely. Friends who have LTE are only getting around 24 mbps, which is still really fast.
HSPA+, which is what AT&T's "4G" (not 4G LTE -- it's the 3.5G) as well as T-Mobile's has a peak of about 42 mbps -- and I've seen folks here (Houston) get really close to that in speed -- which translates to a little over 5 megabytes/sec.
T-Mo and AT&T are actively working to get more and more LTE towers and service created (they have HSPA+). T-Mo hasn't rolled theirs out at all, except I think for testing in a few select, small markets, if I remember correctly. AT&T has service in LTE already established.
LTE is the way of the future at the moment. Kind of like the HD-DVD vs bluray debacle years ago -- LTE won out over another 4G technology, WiMax, which was on several earlier phones on Sprint. Sprint finally conceded it lost and start building out an LTE network to replace their WiMax one.
Hopefully, that's a NICE BIG chunk of knowledge that you can partially digest.
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Ya it's a huge difference, put it like this;
We get 3mbps and LTE gets 30mbps. Of course I am over simplifying things but LTE is about 10X faster then 3G which is what we have.
dudejb said:
Ya it's a huge difference, put it like this;
We get 3mbps and LTE gets 30mbps. Of course I am over simplifying things but LTE is about 10X faster then 3G which is what we have.
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Depends on where they're deployed, though. At the moment, in my mind, though, HSPA+ is fast enough. LTE is nice and important for future-proofing, but I don't see a need for it for another... probably 3-5 years. Keep in mind, most people's home internet is like 3-12 mbps on average. HSPA+ current results for my city are WELL above this for all providers.
You realize that Cappy Glide can get HSPA+ which goes up to 42mbps -- you could theoretically download at > 5 megabytes/sec under ideal circumstances... I currently pull around 1-2 megabytes/sec... Why would you ever need more on this current gen -- especially with data-capping?
Just saying I have a friend on the same cellular provider as me and he has that new Windows Phone from Nokia on LTE and me with the glide. We did a speed test and I got around 2.5mbps and he got 25.mbps. I agree for everyday stuff 2.5 mbps is enough, but I just have to say I was drooling when I saw the speed he was getting on Rogers which is whoI have.
I have 2 years left on my Contract and I am happy with my Glide but for sure in 2 years I will make sure my next phone is a LTE device. I have a 6Gigs download cap so I am not to worried about caps after all it is a cell phone and 6 gigs should be plenty.
Fair enough -- seems that Rogers is much different as a carrier than the ones here in the US. I've had friends on HSPA+ on T-Mobile at like 30ish mbps and friends on LTE on Verizon at 35 mbps. It wasn't a super big difference. But until you hit double-digits on the speed, I can totally understand the drool you emit and why.
thanks, thats clear e a lot i always think that 4G was behind of lte but better than 3.5G, because my glide is the unique phone that i see with 4G icon (all the phones here only has 3G icon or H+ and the modems wcdma or Hsdpa) i am not in USA or Canada
I wouldnt say that 4G is HSDPA+ ..
Let's get back to begining ...
1. GSM (2G) 9.6 kbps,
2. GPRS (2G) 40 kbps
3. EDGE (2G) 120 kbps
4. WCDMA (3G) = UMTS and HSDPA 14Mbps
5. HSPA and HSUPA (3.5G) = HSPA+ 28Mbps (unreal speeds / market speeds)
6. DC-HSDPA (4G) 42Mbps and up (unreal speeds / market speeds)
7. OFDMA (LTE/WiMAX) 100Mbps (unreal speeds / market speeds)
Here is reality : http://www.zdnet.com/au/speed-test-how-fast-is-4g-really-7000007995/
iEthos said:
I wouldnt say that 4G is HSDPA+ ..
Let's get back to begining ...
1. GSM (2G) 9.6 kbps,
2. GPRS (2G) 40 kbps
3. EDGE (2G) 120 kbps
4. WCDMA (3G) = UMTS and HSDPA 14Mbps
5. HSPA and HSUPA (3.5G) = HSPA+ 28Mbps (unreal speeds / market speeds)
6. DC-HSDPA (4G) 42Mbps and up (unreal speeds / market speeds)
7. OFDMA (LTE/WiMAX) 100Mbps (unreal speeds / market speeds)
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That table is misleading. Most cablecos have rolled out DOCSIS3, capable of 50Mbps at the low end, yet you'd be lucky if there's a 20Mbps package available at all. VDSL is a similar story. Realistically, you're gonna see one, maybe two Mbps real-world, even on LTE. When you're talking about actual bandwidth delivered to your device, you won't see ANY improvement upgrading past UMTS. In the US market, all the benefits of the newer technologies are exclusively on the side of the carriers -- you will see nothing.
Stay on WiFi, folks.
roothorick said:
That table is misleading. Most cablecos have rolled out DOCSIS3, capable of 50Mbps at the low end, yet you'd be lucky if there's a 20Mbps package available at all. VDSL is a similar story. Realistically, you're gonna see one, maybe two Mbps real-world, even on LTE. When you're talking about actual bandwidth delivered to your device, you won't see ANY improvement upgrading past UMTS. In the US market, all the benefits of the newer technologies are exclusively on the side of the carriers -- you will see nothing.
Stay on WiFi, folks.
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Man I don't know what u talking your words are misleading.. sorry
roothorick said:
That table is misleading. Most cablecos have rolled out DOCSIS3, capable of 50Mbps at the low end, yet you'd be lucky if there's a 20Mbps package available at all. VDSL is a similar story. Realistically, you're gonna see one, maybe two Mbps real-world, even on LTE. When you're talking about actual bandwidth delivered to your device, you won't see ANY improvement upgrading past UMTS. In the US market, all the benefits of the newer technologies are exclusively on the side of the carriers -- you will see nothing.
Stay on WiFi, folks.
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Lololololololol now that I've laughed enough. Play an online game on UMTS and on LTE or download a file or game or video the come talk to me. LTE is not just for the benefits of the carriers.
Sent from my SPH-L710 using Tapatalk 2
enik_fox said:
Lololololololol now that I've laughed enough. Play an online game on UMTS and on LTE or download a file or game or video the come talk to me. LTE is not just for the benefits of the carriers.
Sent from my SPH-L710 using Tapatalk 2
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OK u are the maaan
The Captivate Glide on AT&T in the US is capable of a rated 21Mbps maximum speed...I have one on a NET10/AT&T SIM in Los Angeles and have so far seen up to 11Mbps in speed tests, but it can also be much slower, dependent on the traffic on the network where I happen to be - the phone's indicator nearly always says "4G" even if my download speeds are less than 500k. If you have a Samsung Relay on T-Mobile (the closest phone to the Captivate Glide design-wise) it has a max rated speed of 42Mbps, and the T-Mobile network usually has faster average data speeds regardless, as long as you're on 4G, but their network is smaller. At this point I'm paying $46 a month on NET10/AT&T versus $55 a month on Page Plus for a 3G phone that maxes at 2.5Mbps (usually around 1200k) on Verizon's network, both with 2GB of data (I use WiFi as much as possible). For my needs I'm willing to spend a lot less with a MVNO prepaid network and live with the HSPA+, rather than paying $100 a month and up for LTE on Verizon, AT&T or Sprint - LTE is also a big battery hog. The fact I was able to get a slightly used Glide for around $100 helped as well, rather than paying hundreds more for an LTE phone and/or being locked into an expensive contract.
TVCCS said:
The Captivate Glide on AT&T in the US is capable of a rated 21Mbps maximum speed...I have one on a NET10/AT&T SIM in Los Angeles and have so far seen up to 11Mbps in speed tests, but it can also be much slower, dependent on the traffic on the network where I happen to be - the phone's indicator nearly always says "4G" even if my download speeds are less than 500k. If you have a Samsung Relay on T-Mobile (the closest phone to the Captivate Glide design-wise) it has a max rated speed of 42Mbps, and the T-Mobile network usually has faster average data speeds regardless, as long as you're on 4G, but their network is smaller. At this point I'm paying $46 a month on NET10/AT&T versus $55 a month on Page Plus for a 3G phone that maxes at 2.5Mbps (usually around 1200k) on Verizon's network, both with 2GB of data (I use WiFi as much as possible). For my needs I'm willing to spend a lot less with a MVNO prepaid network and live with the HSPA+, rather than paying $100 a month and up for LTE on Verizon, AT&T or Sprint - LTE is also a big battery hog. The fact I was able to get a slightly used Glide for around $100 helped as well, rather than paying hundreds more for an LTE phone and/or being locked into an expensive contract.
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UUf i would never pay so much ..
I have one contract for 12 months (sim only) so am locked but am paying £15 a month and I have unlimited internet and unlim. SMS , then 600 minutes that my girlfriend uses .. (she never use all 600 minutes .. she is texting more ..)
And I had Giff Gaff previously .. it is based on O2 but it is cheaper and it is sim only . I used to pay £10 a month for unlimited internet unlim. texts and 250 minutes .. BUT they increased package to £12 so I started NOT liking it cos speed is not as fast as on 3 network
So I have decided to go with 3 network (same as my girlfriend) but it is SIM only pay as u go so it is 15 pounds a month no contract am not locked and I have same package as girlfriend but NOT 600 minutes but 300 minutes of call .. and that is way enough for me .. internet and SMS unlimited that is my priority..

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