Develop Bugs

Help! 3G is not working after Hard-SPL and unlocked TP2

I'm new here and I enjoyed this site very much. I have one problem with my TP2. Somehow, 3G network is not working after I installed Hard-SPL and unlocked T-Mobile TP2 switch to AT&T sim card. Everything is working fine with AT&T's sim card I was able to made phone calls, received, SMS, and web browsing. ATT 's 3G network is available around my home, but I can not get 3G on TP2 instead a EDGE network. Can unlocked TP2 handle AT&T's 3G network? or a .cab file I can download to fix this?

idk for sure but i think t mobile uses a different frequency for 3g from at&t so if they are you are stuck with edge speeds on at&t man sorry

I have the tmobile TP2 and i can confirm from talking with ATT that the phone does support ATT BUT i was unable to use the phone on 3g. The phone DOES support the signals for 3g but am still unable to access the towers in my area. I think the phone may be hard set to look at tmobile towers, is there any way i could reset the device to open up its tower usage? Hopefully i can get an answer but no tmobile TP2 users arent screwed in the US we just need to find a fix

It was my understanding that the tmobile tp2 does NOT have 850/1900mhz 3g on it. It does have aws 1700 for sure. Not sure about 2100mhz though for overseas.

This issue has been covered many times in the numerous AT&T threads on this board.
I'm sorry to tell you that the T-Mobile TP2 hardware radio was limited to using 3G over the 1700/900Hz frequencies, while AT&T currently uses 1900/850Hz only. It's unlikely that any change can be made to the radio software wise to fix this issue.
Just to make things clear the issue has nothing to do with Hard SPL or custom roms.

T-Mobile UMTS 1700/2100 Mhz
T-Mobile 3G runs on UMTS 1700 up and 2100 down. Unless you have a device that runs on those specific frequencies, EDGE is the best you can do with T-Mobile if you opt to run on their service.

ATT offers UMTS or 3G using 850mhz(the old TDMA band) and 1900mhz. While T-mobile offers HSDPA (technically 3.5g part of the UMTS specification) using 1700MHz for uplink and 2100MHz downlink.
Because HSDPA is part of the UMTS spec, it’s backward compatable. However, you have the limiting factor beging that the frequencies the individual carriers use to transmit the data.
Europe and Asia’s 3G runs on 1900/2100mhz. North and south America is supposed to use the (AWS) 3G spec using 1700/2100mhz
ATT didn’t want to wait, like T-mobile is doing, for homeland security to vacate those frequencies and launched on 850/1900mhz instead

ace.app said:
ATT didn’t want to wait, like T-mobile is doing, for homeland security to vacate those frequencies and launched on 850/1900mhz instead
Click to expand...
Click to collapse
I heard that t-mobile did not have enough spectrum in many areas to launch 3g in its existing 1900mhz. At&t doesn't have that issue, or as bad.

Im gonna make this real easy for u. The tmobile tp2 will not work on at&t 3g. The 3g bands are different

Read this before you ask questions about phone versions/ supported fequencies.

So basically I got fed-up with seeing so many questions about TP2 models and their supported frequencies.
I'm an American so most of this information is geared towards helping other Americans- but it may also be of use to people in other parts of the world.
If you aren't a big tech-wiz, READ THIS before you buy your Touch Pro 2.
Here is the low down:
There are two different prominent cell phone technology standards in the world today: GSM and CDMA.
Most of the world runs their 3G cellular networks on GSM. However some carriers such as Verizon, Sprint, Bell, and Telus work on CDMA.
GSM= Sim Card
CDMA= No sim card
-Note however that CDMA "world phones" have sim cards because they also include GSM tuners.
Here are the Mobile Telecommunications Standards that matter to you:
GENERATIONS:
1st Generation (1G):
~don't worry about it, only primitive cell phones operated on this standard.
2nd Generation (2G):
~here we go this is GSM!!! This is what matters
~this is also where current CDMA networks really started rolling out.
2.5G:
~EDGE, this is the GSM that you use if you aren't on 3G. EDGE is important, memorize the name!!!
3rd Generation 3G):
~now we are talking, UMTS (Universal Mobile Telecommunications System). In Europe UMTS may also be called "W-CDMA" although it is GSM (sim cards!!!) This is 3G that the Iphone was named after. It is GSM.
~EV-DO (Evolution Data Optimized), this is the 3G of CDMA. this has revisions such as EVDO rev "A" or "B" that can be considered 3.5G
3.5G:
~HSPA (High-Speed Packet Access)= HSDPA/HSUPA. The "D" in HSDPA stands for downlink, the additional "U" in HSUPA stands for uplink.
~ EV-DO revisions.
4G:
~LTE, blazing mobile broadband. This is GSM and what most of the world is migrating to, EVEN CDMA carriers.
~WiMAX. No sim card, because it is not a GSM technology. Think of it like Wi-Fi on steroids. Compare it to LTE like we can compare HSPA to EV-DO today. Understand WiMAX now?
Whew, now that we have all the standards explained, lets talk about what this means.....
DON'T BUY a phone and expect to get 3G on it UNLESS it SPECIFICALLY states that you can get 3G for your carrier on it.
Some common hints:
"European Version"= 3G for many carriers in Europe, EDGE everywhere else, nothing at all for CDMA.
"World Phone"= a CDMA phone that is also capable of GSM. Only capable of 3G (EV-DO) on the carrier that the phone is branded for. Will work on EDGE everywhere else for GSM carriers.
"US Version"= a GSM phone that works on AT&T's 3G network but NOT T-mobiles.
~~Phones that you buy from your carrier will work on your carrier's 3G bands. (Unless your carrier doesn't have 3G yet in your area)
JUST BECAUSE A PHONE SUPPORTS THE SAME BAND DOES NOT MEAN THAT YOU CAN GET 3G ON IT.
MANY 3G BANDS ARE SHARED, BUT ARE SLIGHTLY DIFFERENT. This means that even though carriers such as T-Mobile and AT&T share bands, the phones that support 3G on each are not interchangeable with carriers. EDGE, on the other hand, works interchangeably.
Lastly, 3G support and other wireless standard compatibilities have nothing to do with the software of your phone. You will never find a magic ROM that will enable 3G on a carrier that does not support the phone. It is all HARDWARE DEPENDENT.
Questions?
Also if you need more information, read the posts after this one. There are lots of smart people on xda-developers. I'm sure some will write additional information, clarify, or even correct something that I wrote.

somebody should sticky this, its useful for newcomers

skyler17 said:
2.5G:
~EDGE, this is the GSM that you use if you aren't on 3G. EDGE is important, memorize the name!!!
Click to expand...
Click to collapse
Not necessarily true. EDGE can actually technically be classed as 3G (though it almost always sits in the higher end of the 2.5G tier). 2.5G would more correctly refer to GPRS rather than EDGE, with EDGE being more of an enhancement to GPRS.

skyler17 said:
. . . .
Most of the world runs their 3G cellular networks on GSM. However some carriers such as Verizon, Sprint, Bell, and Telus work on CDMA.
GSM= Sim Card
CDMA No sim card
Click to expand...
Click to collapse
When it comes to PDA/WinMo phones "CDMA = No SIM card is false". There are actually a couple of CDMA phones with SIM cards including the Touchpro2.

HSPA is a catch all name for HSDPA and HSUPA, 3.5G techs.
The 3G implementation is UMTS.
If you are talking about worldwide use, EDGE is pretty much not used in the UK... O2 have it on a couple of base stations but its extremely rare, so here you just get:
1G - Analogue phones, Vodafone and O2 had analogue networks but they are now shut down.
2G - GSM with CSD (Circuit Switched Data - make a phone call for data) and HSCSD (High Speed Circuit Switched Data - basically make multiple phone calls and bond them, was only availible on Orange). O2 and Voda use both 900MHz and 1800MHz. Orange and Tmobile have no 900MHz license and use just 1800MHz. 3 Do not operate a 2G network and these days use Orange for coverage where they don't have their own network, they used to use O2...
2.5G - GPRS (General Packet Radio Service) This is the lowest speed you'll get on any network now, up to about 115kbps, on all four 2G networks, indicated by a G on the screen near the signal metre.
2.75G - EDGE (Enhanced Data Rates for GSM Evolution) initially capable of 236kbps, only O2 ever did anything with it, and they did very little with it, for all intents and purposes it is unused in the UK.
3G - UMTS (Universal Mobile Telecommunications Service). This is what is known as 3G in the UK. It uses WCDMA - yes, it is CDMA based, not TDMA as 2G GSM is. Capable of 384kbps, this is needed for video calls (which all UK networks support). Indicated by a 3 onscreen, all UK towns and cities are covered by this or better these days by all networks (advantage of a small country with dense population). All 5 big operators have 3G licenses. At the moment 3G means 2100MHz, Ofcom want to have some of Voda and O2's 900MHz allocation back and allow 3G on it. High frequencies mean short range, making the current band good for getting alot of transmitters (and hence capacity) in cities, but crap for covering rural areas with 3G, you need too many transmitters for cost effectiveness. If Ofcom reallocate some of the 900MHz band and allow 3G on it, it could massively improve 3G reception in rural areas.
3.5G - HSPA (HSDPA and HSUPA). Up to 14.4mbps down (Voda in trial at this speed) other networks 7.2mbps and 3.6mbps. Indicated by a H on screen. Will see this in most major towns and cities.

Say you have an European TP2, which, as we know, does not support AT&T's 3G. Will it support US HSDPA?

dementio said:
Say you have an European TP2, which, as we know, does not support AT&T's 3G. Will it support US HSDPA?
Click to expand...
Click to collapse
Nope, its all or nothing. Even though it supports the downlink band, since it is missing the uplink band it will not support US 3G.
It will give you EDGE however.

Evo on metropcs problems

So I have metro pcs service I took my evo to them and they couldnt get it working after a day. I have my evo flashed with metro droid and I followed the mms and data provisioning. When I call out with my evo all I get is it trying to connect to verizon. Nothing works at all with it. The metropcs dude gave me my MDN and MIN and SPC numbers. What do I gotta do to get it to work?

Your area uses AWS, Which is NOT CDMA Since it's quad-band, I think CDMA is only dual-band. I have the same issue with mine.

So what does that mean? My area is 89015.

I just need to add my ESN to their network now.

Eric-1987 said:
So what does that mean? My area is 89015.
Click to expand...
Click to collapse
Okay, I'll try to explain as simply as possible. Sprint and Verizon's networks operate on the 1900MHz PCS band (so their phones are made with 1900MHz compatibility built in).
About half of MetroPCS' network also operates on the 1900MHz PCS band, BUT, (this the important part) the other half of their network operates only in the 1700MHz AWS band.
MetroPCS builds their phones with that in mind, so that their phones will operate on both the 1900MHz PCS band and the 1700MHz AWS band. However, Sprint and Verizon don't build their phone with AWS compatibility because they don't have to. They don't operate on AWS.
So if you live in an area where MetroPCS' network is 1900MHz PCS, any Sprint or Verizon phone will work. If you live in an area where MetroPCS' network is 1700MHz AWS, then the only phones that will work at MetroPCS' own phones.
Hope that clears it up for you.
EDIT: By the way, I checked your zip code and you are indeed in an AWS 1700MHz area... not 1900MHz PCS so your EVO will not work on MetroPCS. Sorry.

Where did you find out my area type?

bump I need to know if thats 100% true.

Exact Specifications of my Xperia Play?

I guess my cellphone uses EDGE, but I am not sure what it is capable of. My download speeds are so slow, that I would like to change this somehow. Reading the specs on the side of the box, says:
GSM/GPRS/EDGE 850/900/1800/1900& UMTS/HSPA Bands 1/2/5/6
Is it capable of anything other than EDGE? From what I am reading and experiencing, it seems that the speeds are not going to be anything other than slow...

What model?
What network?
Where are you?
Sent from my R800i using Tapatalk

Model: r800a
Network: T-Mobile
Location: Los Angeles, CA, USA

bumping...

Unless you are on 4g or wifi I'm sorry to say... it probably will be slow

Download "speedtest.net" app and check your download speed. If it's around 1.5-3mbps then that's pretty normal for 3G

Have you selected WCDMA/GSM in the Network settings, if it is only GSM you will only get EDGE speeds, if not you will get HSDPA (H Icon), I have data enabled and it works flawlessly, It had hit 6Mbps as well for me.

you will only get edge on t-mobile, ur phone doesn't have the required bands for 3g, if you were on atnt you would get 3g using the r800a.

Man, that sucks... time to change my provider...

just to clarify, im 99% sure you should, globally atnt and other 850mhz 3g band carrier phones are usually compatible, tesltra here in australia being one, and telus in canada. atnt also has their own "4g" play version with its souped up hsdpa+ radio. but technically, as far as i can tell, there is no reason your phone should not run fine on their network.
you cant get t-mobile 3g on any version of the play, tmobile actually uses 2 different bands for 3g data, and usually only phones built for t-mobile will work on its network because the 2 bands are not common anywhere else.

VS986 to use band 5 LTE abroad.

I meant to use band 5 lte in indonesia with smartfren using vs986. I used shortcut master lite app to enable band 5 (and/or disable irrelevant lte bands). However i still cant connect to it. I am certain that my location is under that lte band 5 coverage given that when i used other gsm sim i could see the network and attempt a registration on the network. Furthermore, seeing the networks rat id also match with the information online that it is indeed a band 5 lte network. However when i pop in the band 5 lte network gsm sim card, i am no longer able to scan for networks, it just fails to scan everytime, thus i cant connect. I wonder if there is a workaround to make vs986 able to connect to other lte networks other than verizon.
P.s. im on slim 13b rooted/xposed.

It's not just the bands. Verizon really borked the firmware of the phone to make sure that it doesn't work on any other 4G LTE network than its own. For instance, it doesn't work on AT&T and T-Mobile LTE network in the US either, even though the bands are supported.
What you can try is to switch the phone to "LTE/CDMA" mode in the "Network mode" settings. This will probably kill your phone connection, but if you get 4G LTE then, then you can try the same hack that worked for T-Mobile: http://forum.xda-developers.com/verizon-g4/general/guide-fix-vs986-dropping-to-3g-h-4g-lte-t3272434
But on some networks, there is no hope, for instance nobody was able to get it to work on AT&T.

I think i did check that thread out when i used t-mobile for about 6 months in seattle/udistrict/uvillage/uw areas, with no success. I never got the LTE connection. I wonder maybe its related to different roms/kdz/flashfire modified version of 13b that cause it. I hope someone whos lucky enough to get lte might share info about their 13b version/softwares that you debloat using debloater or froze using tibu. Thanks.
P.s. it was on 4g for an instant before it gives me no signal/network.

Why would VZW disable B5 if they have B5 sites?
That would really be stupid.
Posted using a calculator and delayed by AT&T.

LTE 2/4/5/13 can be activated using Shortcut master lite. The problem is that, when i used a simcard that utilized LTE band 3/8, i could detect/attempt registration to signal from LTE band 5 from local network through GSM (given that i activated it). However when I used simcard for that LTE band 5 network, somehow, i can no longer use gsm/cant search for network/crashed. It seemed that LTE antennae on this device is programmed to only accept verizon's. (For lte networks, apns are saved when i put MCC/MNC or RAT for verizons, but discarded when i put other). Thank god though i could still use umts/3g.
Edit: So i tried again. Turns out, i could to get registered on the network, checked on network type and strength (says 4g - 3/4 bars) also on lte discovery says connected. However signal bars says unable to connect to network. Verizon definitely prevent users to use lte on another network. What a **** company.

this is from Verizon website them self
Network
CDMA, GSM, LTE*
Frequencies
1.9 GHz CDMA PCS, 800 MHz CDMA, GSM 850/900/1800/1900 MHz, LTE 2/4/5/13, LTE 3/7 for Roaming*
which show it support band 3 in case of romaing only..but if you are in USA will not work sure as it is not romaing.