Develop Bugs

[Q] HTC One M8 Developer Edition on Verizon

I have looked elsewhere and am having trouble finding a site that compares the HTC One M8 Developer Edition side-by-side with the Verizon edition. Does the developer edition support the same frequencies as the Verizon edition? I have an activated Verizon SIM card from a Galaxy S3 that I can cut to nano size, but I want to be sure that it will support voice and data frequencies.
I see on TechnoBuffalo (can't post the link because my post count is too low) that the Google Play edition supports:
The HTC One (M8) Google Play Edition will support the 850/900/1800/1900MHz GSM/GPRS/EDGE frequency bands, 850/AWS/1900/2100MHz WCDMA bands with support for HSPA+ 21Mbps networks, and the 700/850/AWS/1900 LTE bands with support for 2600/1800MHz roaming.
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I'm wondering: if the developer edition supports all of these frequencies as well, is that sufficient for functionality on Verizon?

Clevinger said:
I have looked elsewhere and am having trouble finding a site that compares the HTC One M8 Developer Edition side-by-side with the Verizon edition. Does the developer edition support the same frequencies as the Verizon edition? I have an activated Verizon SIM card from a Galaxy S3 that I can cut to nano size, but I want to be sure that it will support voice and data frequencies.
I see on TechnoBuffalo (can't post the link because my post count is too low) that the Google Play edition supports:
I'm wondering: if the developer edition supports all of these frequencies as well, is that sufficient for functionality on Verizon?
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Click to collapse
The developer edition doesn't have CDMA radios so doesn't work on Verizon or sprint. It sucks to be on CDMA carriers like Verizon or Sprint, always choose a GSM carrier like TMobile or ATT you will have more option than useless carriers dictating what phones you have to use.
Your only option is to wait for HTC/Verizon to release a CDMA developer edition model.

Damn, I was hoping it would perhaps fallback to GSM voice roaming...
Wish I could switch away from Verizon but the deal I'm getting is too good ($30/mo for unlimited data).

kirdroid said:
The developer edition doesn't have CDMA radios so doesn't work on Verizon or sprint. It sucks to be on CDMA carriers like Verizon or Sprint, always choose a GSM carrier like TMobile or ATT you will have more option than useless carriers dictating what phones you have to use.
Your only option is to wait for HTC/Verizon to release a CDMA developer edition model.
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Click to collapse
I wish T-Mobile or AT&T were choices for me. Where I live, only VZW gets signal..and it's strong LTE. I also have no option for high speed internet at my rural home. But I do have unlimited data. So, for $90 a month I have my home internet as well as LTE everywhere I go. Been a very long time since I've seen the 3G icon. I do have an AT&T sim in my Nexus 5. If they ever expand, I'll know. However, the valley in which I live seems to hate HSPA networks. I can't get any signal whatsoever from any other carrier.
Sent from my HTC One M8 using XDA Premium 4 mobile app

Clevinger said:
Damn, I was hoping it would perhaps fallback to GSM voice roaming...
Wish I could switch away from Verizon but the deal I'm getting is too good ($30/mo for unlimited data).
Click to expand...
Click to collapse
Verizon doesn't support "falling back" on GSM in any way. Sometimes when the frequencies say "WCDMA" it can be confusing, but the only time you can get a phone to to work for voice/sms on Verizon is if it suports CDMA (you'll have to look for the correct bands). Now, that doesn't mean that you wouldn't be able to get an LTE signal if you put your Verizon SIM card in it. It would work the same way the 2013 Nexus 7 works, LTE Only.
It would have to support the following:
700 MHz Block C 13 LTE 4G
1700/2100 MHz AWS 4 LTE 4G
via Wikipedia
Oh and I'm currently getting Unlimited LTE Data on T-Mo with their $20/month data plan. It's worth looking into if you have the coverage.

[Q] Why does the ZF2 switch from LTE to 3G whenever I make a call?

Whenever I try to make a call using the default phone app on my ZF2, it always switches from an LTE connection, to H+/H, then settles on 3G, and also causes a delay in dialing. I'm currently using this on T-Mobile (USA), and I know T-Mobile supports VoLTE (HD Voice). Is this an issue of the ZF2 not supporting the band for VoLTE? (also is it possible to at least keep the call on H/H+ rather than 3G if the ZF2 doesn't support VoLTE)
I have the ZE551ML, 4GB RAM, 2.3 GhZ model.

itechnoguy said:
Whenever I try to make a call using the default phone app on my ZF2, it always switches from an LTE connection, to H+/H, then settles on 3G, and also causes a delay in dialing. I'm currently using this on T-Mobile (USA), and I know T-Mobile supports VoLTE (HD Voice). Is this an issue of the ZF2 not supporting the band for VoLTE? (also is it possible to at least keep the call on H/H+ rather than 3G if the ZF2 doesn't support VoLTE)
I have the ZE551ML, 4GB RAM, 2.3 GhZ model.
Click to expand...
Click to collapse
Its is not your phone. It is your carrier(T-Mobile). I have had the same issue with T-Mobile but did not have with at&t on the same unlocked phone. Kinda weird when it happens but doesn't seem to effect anything.

Recommend using ZenUI app called ASUS support/ There are several helpful tips with basic troubleshooting techniques for your device including 3G/LTE signal issues.
For online support please see ASUS ZenFone Quick Service and FAQ:
http://www.asus.com/us/support/self-service/11/
http://www.asus.com/us/Phones/ZenFon...esk_knowledge/
Sincerely,
ASUS_USA

As of now, phones must have software support for VoLTE, which only a few do. The ZF2 does not, that I know of.

dicktuggnutz4 said:
Its is not your phone. It is your carrier(T-Mobile). I have had the same issue with T-Mobile but did not have with at&t on the same unlocked phone. Kinda weird when it happens but doesn't seem to effect anything.
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Let me reply, I'm working with telecom for 5 year plus and have been dealing elements of 2G > 3G >4G.
your scenario is actually one of the test cases during UAT( user acceptance testing), these test case are scenario based so from here i could say is that.
Your carrier may or may not support LTE call OR the counterpart may not have LTE call in (phone OR network).
This works by,
4G to 4G > depending on network ( if both carrier has VOLTE)
a) if both carrier has VOLTE( voice over LTE), assuming both phone are LTE enable phone then you shall stay onto 4G network and call should be packet based transmission
b) if both carrier has VOLTE assuming either phone does not have LTE enable, then you shall drop from 4G to 3G in order to support the call function of the other party
c) if both carrier has VOLTE assuming that either phone does not have the feature of attaching to LTE during call, it will drop to 3G network because phone is not designed to perform 4G calls. ( look at Xiaomi Redmi, similar scenario but 2G and 3G, during call, 2G call slot pick up and 3G is dropped)
TLDR: either your phone does not support simultaneous 4G call or the carrier does not support VOLTE.
Oh... most European and US telco is slower then asia's network, so they might not have VOLTE or currently test stage. 3GPP stated that by 2017, 2G network shall crease and everything build base as 3G hence 4G network is a must.
---------- Post added at 06:58 AM ---------- Previous post was at 06:53 AM ----------
sooty84 said:
Let me reply, I'm working with telecom for 5 year plus and have been dealing elements of 2G > 3G >4G.
your scenario is actually one of the test cases during UAT( user acceptance testing), these test case are scenario based so from here i could say is that.
Your carrier may or may not support LTE call OR the counterpart may not have LTE call in (phone OR network).
This works by,
4G to 4G > depending on network ( if both carrier has VOLTE)
a) if both carrier has VOLTE( voice over LTE), assuming both phone are LTE enable phone then you shall stay onto 4G network and call should be packet based transmission
b) if both carrier has VOLTE assuming either phone does not have LTE enable, then you shall drop from 4G to 3G in order to support the call function of the other party
c) if both carrier has VOLTE assuming that either phone does not have the feature of attaching to LTE during call, it will drop to 3G network because phone is not designed to perform 4G calls. ( look at Xiaomi Redmi, similar scenario but 2G and 3G, during call, 2G call slot pick up and 3G is dropped)
TLDR: either your phone does not support simultaneous 4G call or the carrier does not support VOLTE.
Oh... most European and US telco is slower then asia's network, so they might not have VOLTE or currently test stage. 3GPP stated that by 2017, 2G network shall crease and everything build base as 3G hence 4G network is a must.
Click to expand...
Click to collapse
and with that, our phone shall be non dual sim by 2017 onward which sucks.
it means that carrier will no longer allow BTS to attach 2G signal to BSC > MSS > circuit core.
so.... that slot is basically useless........ now.. lets wait for dual sim 3G/4G! perhaps zenfone 2^2

International Note 5 N920i on AT&T

Because I hate the idea of having a neutered AT&T Note 5, I bought an international variant (N920i). It appears the LTE bands are all compatible between the two. I will let everyone know how it turns out. If you already have experience with this, let me know.
EDIT: Yes, N920i works without any modification on AT&T

When does it arrive?
Thats very interesting.
from my SAMSUNG-SM-N920A using XDA Free mobile app

First half of this week hopefully!

Please keep us posted.

@alaskajoel Le us know if you have any signal issues.
The T Mobile S6 Edge on AT&T network gave me some issues. Calls would take 30 seconds to dial out and phone did not ring a bunch.

martinezma99 said:
@alaskajoel Le us know if you have any signal issues.
The T Mobile S6 Edge on AT&T network gave me some issues. Calls would take 30 seconds to dial out and phone did not ring a bunch.
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Will do. Should be in my hands tomorrow.

Here goes. N920i 64GB
EDIT:
LTE Working with attnextgenphone APN. Made a few phone calls, received one, and so far no odd problems.

I don't see the LTE on the signal bar are you sure it's on LTE?
---------- Post added at 05:02 PM ---------- Previous post was at 04:48 PM ----------
May I ask where you purchased this version?

eroracing said:
I don't see the LTE on the signal bar are you sure it's on LTE?
---------- Post added at 05:02 PM ---------- Previous post was at 04:48 PM ----------
May I ask where you purchased this version?
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LTE showing up on the signal bar is a Domestic device visual. International versions Show E (edge) 3G, H+ (Faux G) and 4G for LTE.
If you are still unconvinced, my service mode presently shows I am on LTE Band 4. Download speeds at 40mbps this evening. No carrier aggregation unfortunately, but I also didn't have it on my Nexus 6 or the GS6.
I purchased the phone from a seller in Hong Kong via Ebay.

Awesome! Enjoy!

Yep, just like the International S6 G920I that supported AT&T LTE
Sent from my SD4930UR using XDA Premium 4 mobile app

This is excellent news. How much did you pay for that bad boy? Please go to dev settings and see if "allow OEM unlock" is in the options. Thank you.

seh6183 said:
This is excellent news. How much did you pay for that bad boy? Please go to dev settings and see if "allow OEM unlock" is in the options. Thank you.
Click to expand...
Click to collapse
~$900 USD. OEM Unlock is an available option in Developer Options.

I thought I'd give this thread a small bump as I'm about to pull the trigger on an international N920I as well.
My question stems from simply being new to importing phones and having to pay attention to bands. I have bene following this thread closely, and it seems as though the N920I performs well on the AT&T network, but is it the same as if I had bought one from AT&T? I ask only because it was just mentioned that this phone does not have Carrier Aggregation.
I'm not certain what carrier aggregation is (I looked it up on google but couldn't find much to answer my question). Does this mean that it will perform more slowly on US networks?
Also a final question, if anyone is willing to answer it. What is the region-locking situation on this phone? I have read mixed reports about people being stuck with phones that they cannot use because it was not activated with a compatible SIM, and some people that say they have had no problem. I don't want to drop $900 on this device and not be able to use it.

Diraan said:
I thought I'd give this thread a small bump as I'm about to pull the trigger on an international N920I as well.
My question stems from simply being new to importing phones and having to pay attention to bands. I have bene following this thread closely, and it seems as though the N920I performs well on the AT&T network, but is it the same as if I had bought one from AT&T? I ask only because it was just mentioned that this phone does not have Carrier Aggregation.
I'm not certain what carrier aggregation is (I looked it up on google but couldn't find much to answer my question). Does this mean that it will perform more slowly on US networks?
Also a final question, if anyone is willing to answer it. What is the region-locking situation on this phone? I have read mixed reports about people being stuck with phones that they cannot use because it was not activated with a compatible SIM, and some people that say they have had no problem. I don't want to drop $900 on this device and not be able to use it.
Click to expand...
Click to collapse
My data speeds and reception have been the same as my nexus 6 and girlfriend's GS6 (purchased from AT&T.) Carrier aggregation allows for next generation LTE, but I have yet to own a phone, AT&T branded or otherwise, that supports it in my area. It might just be that there is no support for it in my city, but I'll be in Chicago In a few weeks and will try to investigate it there.
I can't speak to the region locking. All I know is my phone was completely sealed and worked 100% right out of the box with only putting in an AT&T SIM card.

alaskajoel said:
My data speeds and reception have been the same as my nexus 6 and girlfriend's GS6 (purchased from AT&T.) Carrier aggregation allows for next generation LTE, but I have yet to own a phone, AT&T branded or otherwise, that supports it in my area. It might just be that there is no support for it in my city, but I'll be in Chicago In a few weeks and will try to investigate it there.
I can't speak to the region locking. All I know is my phone was completely sealed and worked 100% right out of the box with only putting in an AT&T SIM card.
Click to expand...
Click to collapse
Thank you for the quick reply. I think I'll put in an order right now.

Samsung Pay
I'm glad to hear that the N920I works on AT&T on the LTE band. I considered getting the International version. However, there is something else that I am concerned about...and that is Samsung Pay that will be coming late September. I believe carriers have to allow (or configure) Samsung Pay to work. For example, Verizon may not be supporting it, at least that's what's traveling around the net. Also when I had the International Galaxy S3 on AT&T, Google Wallet didn't work, it only worked on AT&T versions at that time. Unfortunately, we won't know until Samsung Pay is available, but I wonder if it will work on the N920I?

Awesome news. can you please tell me if VOLTE works on AT&T or if you even had the option for HD calling? Settings should be found under data options.
Thanks in advance.

For those wondering, if you use an N920I on AT&T, there are a few things you should know.
1. Since this is an international model, the signal indicators are different than what we're used to seeing in the US. The SM-N920I shows the following indicators for mobile data:
E - This means you have a 2G/EDGE connection
3G - This means you have a UMTS connection with no HSPA
H+ - This means you have an HSPA+/Faux 4G connection
4G - This means you have an LTE connection
2. Phone calls will not work over LTE (VoLTE), and, by extension, HD Voice doesn't work either. The VoLTE and HD Voice components are proprietary software that is only built into the AT&T-specific ROM on the SM-N920A.
3. The phone DOES support carrier aggregation (otherwise known as LTE-Advanced), but not on AT&T's bands. Considering that the SM-N920I is intended for retail in Australia, New Zealand, and Singapore, the baseband firmware is tweaked to do carrier aggregation on band pairs that are common among carriers in that part of the world.
So, what does this all mean? If you want a phone that has support for all the bleeding-edge technologies on AT&T's network (VoLTE, HD Voice, LTE-A), then you have no other choice but to buy an AT&T-branded SM-N920A. However, if you want faster updates, no carrier bloat, no carrier branding, an unlockable bootloader, and don't mind sacrificing the whiz-bang stuff on the network side of things, then an SM-N920I will work just fine. Put your SIM card in, you'll get LTE data on all of AT&T's available bands, and you'll be able to make and receive calls over the HSPA+ network. You're just not going to have all the latest carrier-marketed bells and whistles that you'd get if you bought a proper AT&T-branded SM-N920A.
At this point, I *should* rant about how stupid it is that Samsung refuses to sell SIM-free, unlocked versions of their phones via US retail channels. That's what forces us to go through these 3rd party importers to get the international models that aren't really tweaked for the US carriers. Alas, I'm not going to go down that road, though. It's a tempest in a teapot.

oldblue910 said:
1. Since this is an international model, the signal indicators are different than what we're used to seeing in the US. The SM-N920I shows the following indicators for mobile data:
Click to expand...
Click to collapse
Translation: On the 920i/c, the signal indicators follow the international standard of "4G" being "LTE", and not the AT&T/TMO marketing fiction of "4G" being what everyone else calls "3.5G".
As for the rest of your points, I have to wonder how well deployed VoLTE is on AT&T (and I don't think AT&T has even started LTE-A yet, have they?)
I live in a somewhat rural area, and I'm just thrilled I have LTE.. which beats the "no signal" I get with other carriers. I don't know that I've ever experienced VoLTE. (Then again, I can't remember the last time I actually had a voice conversation with my phone.)
oldblue910 said:
At this point, I *should* rant about how stupid it is that Samsung refuses to sell SIM-free, unlocked versions of their phones via US retail channels. That's what forces us to go through these 3rd party importers to get the international models that aren't really tweaked for the US carriers. Alas, I'm not going to go down that road, though. It's a tempest in a teapot.
Click to expand...
Click to collapse
Oh, but why not?! We really need some more activity in the AT&T Note5 section.

T-mobile vs unlocked: WiFi calling etc.

So I've decided to jump back on HTC ship with HTC 10.
The website says "The Unlocked version is compatible with AT&T and T-Mobile".
I assume that means radio bands compatibility only? And the features like Voice over WiFi will be still t-mobile branded only?
Asking existing HTC community if that's the case for the previous models?
And are there any other cons/pros of getting t-mobile branded version vs global?
Especially looking at OS updates frequency from HTC vs T-mobile.

Almost everything works for T-Mobile. From what I gathered of what was answered. Wifi calling, and VoLTE yes. In flight and RCS is a no.
Sent from my SM-G935T using Tapatalk

T-mobile specific features like VoLTE and Wifi calling will be fully supported by the unlocked version on HTC.com
Source: http://www.phonearena.com/news/Unlo...rts-T-Mobiles-VoLTE-and-Wi-Fi-calling_id80185

Thank you!
These are great news! I'm glad I went with unlocked version!
I'm tired of all the t-mobile bloatware and dragging of android updates.

Yea no enhanced voice services im guessing

I wonder if HTC will have interest in adding EVS and RCS down the road. I don't see why they wouldn't...

Wow this is HUGE IMO. No more requirement to load TMOUS FW or RUU so that VoLTE and WiFi Calling work!

[Q] Best way to get a phone that will work with Verizon and all LTE bands overseas

I've really enjoyed my S7 and want to upgrade to the S9. Later in the year I'll be overseas for almost a year, so I want something that will work with all Verizon bands of LTE, but also not have a firmware lock that would cause it to not work on other bands of LTE overseas. (planning to just use prepaid dataplan sim cards overseas)
I think my two options are to either get a US 'unlocked' version or wait for the 'international' version. My understanding is the primary differences between the unlocked and international version is the 2G/3G coverage for CDMA and possibly slightly different hardware. I'd rather have a phone with CDMA backwards capability, but my prime concern lacking full access to all LTE bands available wherever I am.
I'm not really interested in going any route that would require me to root the phone if there is a way to do it without.

Well the only way to get VZW compatibility is the VZW phone or a US unlocked model. So you're looking at the US Unlocked model at this point.

A listing of all the different model numbers available (per country and carrier) is available here: https://www.techwalls.com/samsung-galaxy-s9-sm-g960-g965-model-number-differences/
You will probably want to get the phone that works with your primary location the most. I am not sure which countries use which frequencies for LTE in Europe; you will need to research that to see what you may be missing out on.
With my T-Mobile S7, I haven't had any issues when traveling in Europe or Asia. It connects to LTE usually.

So I just did a deep dive of that list:
It looks like the Verizon and Unlocked versions are almost identical (the unlocked US version has B46(5200) 4G TDD LTE, but I'm not sure anyone who uses it)
Looking at 4G FDD LTE it looks like a Verizon or US unlocked phone will have almost complete coverage around the world, notable gaps are B30(2300) in China/Canada/US AT&T, B32(1500) in UK and B71(600) (US Tmobile). I thought that was a bit confusing as you'd expect a US Unlocked phone to service all LTE bands available in the US yet it lacks AT&T and Tmobile bands.
So based on all that information looks like I should just get an unlocked US phone to be totally safe, and I'd likely also be fine getting a Verizon version also.

StykerB said:
Well the only way to get VZW compatibility is the VZW phone or a US unlocked model. So you're looking at the US Unlocked model at this point.
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Click to collapse
Relcan said:
So I just did a deep dive of that list:
It looks like the Verizon and Unlocked versions are almost identical (the unlocked US version has B46(5200) 4G TDD LTE, but I'm not sure anyone who uses it)
Looking at 4G FDD LTE it looks like a Verizon or US unlocked phone will have almost complete coverage around the world, notable gaps are B30(2300) in China/Canada/US AT&T, B32(1500) in UK and B71(600) (US Tmobile). I thought that was a bit confusing as you'd expect a US Unlocked phone to service all LTE bands available in the US yet it lacks AT&T and Tmobile bands.
So based on all that information looks like I should just get an unlocked US phone to be totally safe, and I'd likely also be fine getting a Verizon version also.
Click to expand...
Click to collapse
So I'm new to Android but i use Verizon prepaid. Will I lose anything by going with the unlocked version or should i stick with a Verizon S9?
I don't use video calling. All i do is text and talk but I've heard that people on Verizon prepaid have issues with unlocked Android phones.
Thanks

Would Wifi Calling work with the US unlocked on verizon? I thought that required a Verizon FW to be flashed. I imagine all the other features such as voLTE / HD calling, etc to work on the US unlocked.

testinguser said:
Would Wifi Calling work with the US unlocked on verizon? I thought that required a Verizon FW to be flashed. I imagine all the other features such as voLTE / HD calling, etc to work on the US unlocked.
Click to expand...
Click to collapse
Curious about that also

testinguser said:
Would Wifi Calling work with the US unlocked on verizon? I thought that required a Verizon FW to be flashed. I imagine all the other features such as voLTE / HD calling, etc to work on the US unlocked.
Click to expand...
Click to collapse
Throwinrocks said:
Curious about that also
Click to expand...
Click to collapse
I did a cursory review of the wifi-calling FAQ on their website. They don't mention anything about compatibility with Unlocked versions of phones (that I saw). I'd call tech support to ask, but I'd expect there to be a 50% chance of getting the wrong answer from the tech based on my interactions with their support.
There might be some good experience based anecdotes in the Galaxy S8 forum, if it works on an unlocked S8 its a safe bet it will work on an unlocked S9
I think I'll ask in the Verizon subreddit, it seems like they normally have really good information as well.
I'm mostly curious about the LTE TDD Band 46 (5200) - its the only band an unlocked US phone has that a Verizon phone doesn't. 5200 is in the U-NII frequency range, no cellphone service providers use it, but I wonder if it may be used for local LTE networks in the near future. The other advantage is avoiding all the verizon bloat wear, but that may be what allows the Wifi Calling to work!

All this has me thinking I might have to add the extra $80 and just buy the Verizon version. I don't get phones on contract and I've always just paid full price. (Page 2 404 error?)

Apparently the Nov/Dec Samsung s8 firmware update added an option for BYOD carrier provisioning for unlocked s8. Given the similarity, I'd imagine the same to be true for s9. Can someone who has an unlocked s8 confirm?

Well after a little more research I see that if you use Verizon prepaid you lose visual voicemail and WiFi calling even if you use a Verizon phone so there's no need in me paying extra for a Verizon S9. Unlocked it is.

Throwinrocks said:
Well after a little more research I see that if you use Verizon prepaid you lose visual voicemail and WiFi calling even if you use a Verizon phone so there's no need in me paying extra for a Verizon S9. Unlocked it is.
Click to expand...
Click to collapse
You might wanna check this as Verizon is starting to implement network locks on some devices as to deter thefts more
Dont know when or what devices but it was a statement Verizon made

So, you're saying the prepaid SIM might not work in an unlocked S9?
I don't think Verizon is keeping Verizon prepaid SIMS from working in unlocked phones they are just locking their phones like Sprint and AT&T still do.
I had no problems with my unlocked Pixel 2 XL that I purchased from Google and my Verizon prepaid, just no visual voicemail.