Dev Edition WiFi Calling on T-Mobile - One (M8) Q&A, Help & Troubleshooting

I have an Amber Gold Developer Edition HTC One M8 that I use on T-Mobile and was wondering if it's possible and/or how to get WiFi calling on my model? Do I have to specifically have a T-Mobile branded model or is there a rom I can flash? Thank all!

Flash viper and select tmobile as your carrier. That should work
Sent from my HTC One_M8 using Tapatalk

Thank you so much. I think that there may be a few incompatibilities with the bands though. I live in a refarmed area so i am not affected but I want to make sure that by flashing Viper and selecting T-Mobile as my carrier it wont mess anything up and/or cause the rom not to work properly! The Dev edition is based on the AT&T model which means although I have the AWS band for LTE, I dont think I have the AWS band for WCDMA like the actual T-Mobile branded model has. As I said I'm in a refarmed area anyway so I surf 3G/H+ on the 1900mhz band and I also have T-Mobile LTE as well. I just want to be sure that I won't mess anything up on the phone!

Sorry for taking so long I didn't know you replied haha, but I'm nearly 100% sure it won't mess anything up. It won't enable that LTE on AWS or anything, but it won't disable bands either. Your phone would work the same.
Sent from my Nexus 5 using Tapatalk

Related

[Q] Verizon HTC One AT&T Sim

Hi,
I purchased Verizon HTC One from craigslist it was mentioned that it is pre-unlocked phone. I have used T-Mobile sim and it is working however when I tried AT&T sim in it that didn't work. It shows at top that network is AT&T but I am unable to make or receive calls. I was able to use data on AT&T's edge network ( though my sim is LTE). I know that both T-Mobile and AT&T are GSM networks and this phone is CDMA/GSM. Does anybody else using AT&T sim on Verizon HTC One? Do I have to change some kind of settings??
Regards,
HTC ONE Verison Unlocked
asim99 said:
Hi,
I purchased Verizon HTC One from craigslist it was mentioned that it is pre-unlocked phone. I have used T-Mobile sim and it is working however when I tried AT&T sim in it that didn't work. It shows at top that network is AT&T but I am unable to make or receive calls. I was able to use data on AT&T's edge network ( though my sim is LTE). I know that both T-Mobile and AT&T are GSM networks and this phone is CDMA/GSM. Does anybody else using AT&T sim on Verizon HTC One? Do I have to change some kind of settings??
Regards,
Click to expand...
Click to collapse
Hello,
I have the same Verizon phone and I'm using T-mobile network, but I can't get data started. What APN settings did you use? If
you could please help I would greatly appreciate it.
Thanx,
SiouxV
You will only get edge because Verizon blocked some of the bands that you would need for hspa speeds.
Sent from my HTC6435LVW using Tapatalk
asim99 said:
Hi,
I purchased Verizon HTC One from craigslist it was mentioned that it is pre-unlocked phone. I have used T-Mobile sim and it is working however when I tried AT&T sim in it that didn't work. It shows at top that network is AT&T but I am unable to make or receive calls. I was able to use data on AT&T's edge network ( though my sim is LTE). I know that both T-Mobile and AT&T are GSM networks and this phone is CDMA/GSM. Does anybody else using AT&T sim on Verizon HTC One? Do I have to change some kind of settings??
Regards,
Click to expand...
Click to collapse
You will have to change settings to gsm/umts as att uses. Settings>mobile data> preferred network. Also Google att 3g apn settings and edit son. You won't get lte but I don't see why you shouldn't get 3g.
spokanite said:
You will have to change settings to gsm/umts as att uses. Settings>mobile data> preferred network. Also Google att 3g apn settings and edit son. You won't get lte but I don't see why you shouldn't get 3g.
Click to expand...
Click to collapse
Weird because I have a straight talk att and tmobile SIM card with correct apn's set and I only get edge. I know tmobile reformed my area to the 1900 band too. If I pop those SIM cards in my droid DNA I can pick up HSPA speeds with the same apn settings.
Sent from my HTC6435LVW using Tapatalk
selayan said:
Weird because I have a straight talk att and tmobile SIM card with correct apn's set and I only get edge. I know tmobile reformed my area to the 1900 band too. If I pop those SIM cards in my droid DNA I can pick up HSPA speeds with the same apn settings.
Sent from my HTC6435LVW using Tapatalk
Click to expand...
Click to collapse
That is weird. I would assume if gsm/umts is an option that HTC would have also included the correct bands but nothing surprises me these days.
spokanite said:
That is weird. I would assume if gsm/umts is an option that HTC would have also included the correct bands but nothing surprises me these days.
Click to expand...
Click to collapse
I think it has only the 1900 and 800 band. Not the 850, which you also need for 3g. Or Verizon blocked those bands despite the phone being factory unlocked.
Sent from my HTC6435LVW using Tapatalk
There's an app called "LTE On/Off", not sure if can download from play store, but included with certain Roms. It allows you to pick different bands. You can select HSPCA/GSM etc. Maybe this will help with other networks??
I'm not sure. On android central I have a thread there about the Verizon one. A person there says he tried it on straight talk with an att SIM and got hspa speeds. I tried both an att and tmobile SIM card in my Verizon one and only got edge with both apn settings. And tmobile rolled out the new bands where I live too. At the time my one was not rooted so I didn't have that app.
Sent from my HTC6500LVW using Tapatalk
could you flash a new radio? Seems like that might help.. and if the hardware is the same and you get the bootloader unlocked, root the device, and achieve s-off could you re-flash firmware, radios, hboot and rom could it potentially operate as a modified at&t (or other gsm) htc one? sorry if this is completely wrong I'm not a firmware guy.. I know basics of rom's and installations that's about it just throwing an idea out there...
Not sure, but you could unlock your cid setting it to all 1's and flash a gsm edition Rom or ruu, flash radios too. Not sure weather it would work or not depending on the Verizon model hardware but all that stuff you can do.
Turns out the guy on android central was wrong, he was also getting edge data but didn't know it.
Sent from my HTC6500LVW using Tapatalk 2
Are any of you who are trying to use the phone on AT&T running a custom rom, e.g. Cyanogenmod or Santod's Global Edition?
My one max works on at&t fine once you add the apn settings for at&t.
The Verizon one does not have the same frequiences unlocked that require you to have 3g. The DNA has pretty much similar radio frequiences and gets hspa but the HTC one has those bands locked so you only get edge, even with apn settings.
Sent from my HTC6500LVW using Tapatalk
selayan said:
The Verizon one does not have the same frequiences unlocked that require you to have 3g. The DNA has pretty much similar radio frequiences and gets hspa but the HTC one has those bands locked so you only get edge, even with apn settings.
Sent from my HTC6500LVW using Tapatalk
Click to expand...
Click to collapse
DAMN I hate Verizon!!! Except for their unlimited plan that I used about 60gb's on so far this month... ha ha ha ha
shojus said:
DAMN I hate Verizon!!! Except for their unlimited plan that I used about 60gb's on so far this month... ha ha ha ha
Click to expand...
Click to collapse
Great. It's usage like this that was a big contributor toward the unlimited data plans going away. Thanks. This is why we can't have nice things.
Back on topic, I'm curious as well if flashing new radios would do the trick.
They would have to be fully compatible and I'm not sure they would be. Maybe possible but I have not tried. Mainly one reason why they stopped selling the DNA.
Sent from my HTC6500LVW using Tapatalk
So the consensus here is that you cant do any better than Edge service when using AT&T SIM in a VZW HTC One?
See, I just swapped my Note 3 AT&T for this phone, and Id like to be able to use data. I use AT&T prepaid but my Note was always able to pickup HSPA and LTE
Have any of you ever tried doing a factory reset from hboot? That will clear out all of the network settings from verizon, and force the phone to be reprogramed from the sim.
dhaliwal925 said:
Are any of you who are trying to use the phone on AT&T running a custom rom, e.g. Cyanogenmod or Santod's Global Edition?
Click to expand...
Click to collapse
I have, with TikTak Google Plus Edition 2.0, I'm still only getting EDGE data (same as with stock) I have tried using a gsm rom, radio, and RUU. The phone wouldn't start with the different radio flash, the RUU would just boot cycle, and the rom would always fail (status 7, 6, 4).
I have spend about 20 hours on this flashing separate roms, radios and pretty much anything i can find

[Q] Moving S4 from Verizon to iwireless/t-mobile

Hi,
I am thinking about moving my Galaxy S4 and moto RAZR from Verizon wireless to iwireless (a t-mobile affiliate). I understand that I need to unlock my phone but I am unable to find out if I move it to iwireless if I will still have 4G data. The iwireless sales rep said that I will still have voice and 2.5G service but couldn't tell me if I would still have 4G.
I was looking at this table I found on a site explaining how to unlock the phone but I don't know enough about the subject to make an informed decision.
Samsung Galaxy S4
Can someone confirm whether or not my Verizon S4 or RAZR can be unlocked to work with the iwireless/t-mobile 4G network?
sgibbers17 said:
Hi,
I am thinking about moving my Galaxy S4 and moto RAZR from Verizon wireless to iwireless (a t-mobile affiliate). I understand that I need to unlock my phone but I am unable to find out if I move it to iwireless if I will still have 4G data. The iwireless sales rep said that I will still have voice and 2.5G service but couldn't tell me if I would still have 4G.
I was looking at this table I found on a site explaining how to unlock the phone but I don't know enough about the subject to make an informed decision.
Samsung Galaxy S4
Can someone confirm whether or not my Verizon S4 or RAZR can be unlocked to work with the iwireless/t-mobile 4G network?
Click to expand...
Click to collapse
It seems as though your grasp of the subject is strong enough to know that it might work as you'd like - and it might not. You need to call back and ask to speak to a CSR that actually knows what bands their service works on so they can give you accurate information. That's kind of their job...
Also -
Verizon LTE operates on Band 13 while T-Mob operates on Band 17, both of which carry completely different spectrums; this means no LTE on either of your unlocked phones.There's a slim possibility that you will get intermittent 3G but the most likely scenario is that you will get talk, text and 2G / 2.5G only.
Band 17? My Verizon branded S4 is getting T-Mobile LTE. I'm fairly sure its on band 4.
T-mobile is band 4 which is 1700/2100 mhz. The Verizon s4 is not capable of 1700mhz. But if you are getting 4G it may be because your area is using 2100 mhz. I am specifically moving to iwireless and I was told they use the 1700 mhz band.
Bsliv, how did you unlock you phone?
sgibbers17 said:
Bsliv, how did you unlock you phone?
Click to expand...
Click to collapse
Many Verizon phones are sim unlocked, so it's most likely unlocked as well
serio22 said:
Many Verizon phones are sim unlocked, so it's most likely unlocked as well
Click to expand...
Click to collapse
Yes, I think all Verizon LTE capable phones are unlocked.
The I545 (Verizon S4) can receive LTE on band 4. T-Mobile serves LTE on band 4. The coincidence works well.
bsliv said:
Yes, I think all Verizon LTE capable phones are unlocked.
The I545 (Verizon S4) supports LTE on band 4. T-Mobile serves LTE on band 4. The coincidence works well.
Click to expand...
Click to collapse
My RAZR MAXX HD definitely wasn't SIM unlocked... For the life of me I couldn't get it to work when I moved to ATT from Verizon... Not even GSM would work.
I just need to get some clarification from you guys. Are your VZW phones bought in the US and being in the US on t-mobile's or iwireless's 4g network. Because after I made the first post I went to the phone unlocking place in my local mall and talked to there techs, they said that the VZW S4 will not get 4g. I have also been doing extensive searches online and keep finding half saying it will work and half saying it won't. I have a feeling that the ones that work are working outside of the US as I found posts saying as such.
I read some where that the razr you had to flash the radio FW to get GSM to work properly.
Sent from my iPad using Tapatalk
I got my vzw S4 off craigslist but 99% sure it was purchased in the USA. I'm on T-Mobile's $50/mo plan.
Verizon's LTE phones are sim unlocked due to an agreement with the FCC when vzw purchased some bandwidth.
I think there was an update around 03/2014 that enabled band 4 on the I545. Then had to make some apn changes and tell the modem to use gsm/lte on band 4.
The one quirk I have is it will say "no service" after a reboot and until I make or receive a voice call. Then I get the "T-Mobile" instead of "no service" and things work as they should.
bsliv said:
I got my vzw S4 off craigslist but 99% sure it was purchased in the USA. I'm on T-Mobile's $50/mo plan.
Verizon's LTE phones are sim unlocked due to an agreement with the FCC when vzw purchased some bandwidth.
I think there was an update around 03/2014 that enabled band 4 on the I545. Then had to make some apn changes and tell the modem to use gsm/lte on band 4.
The one quirk I have is it will say "no service" after a reboot and until I make or receive a voice call. Then I get the "T-Mobile" instead of "no service" and things work as they should.
Click to expand...
Click to collapse
I'll have to go to iwireless and have one of the tech put a SIM card in my s4 and razr to give it a try.
The only options I have for the network mode on my s4 is
Global, LTE/CDMA, and GSM/UMTS. Can you post you settings?
Sent from my iPad using Tapatalk
I was just at iwireless today and tested my phone with their network and was unable to get it to work. iwireless is a t-mobile affiliate but they do not use 4G LTE in my area. Their system runs on a 3.8G 1700MHz which the VZW S4 does not have. I am told that they will be starting to switch all the 2G radios in the area to 4G LTE later this year, which should work with my VZW S4. So I am just going to have to wait till the end of the year and go back and test it again.
Frankenscript said:
My RAZR MAXX HD definitely wasn't SIM unlocked... For the life of me I couldn't get it to work when I moved to ATT from Verizon... Not even GSM would work.
Click to expand...
Click to collapse
That phone was before VZW bought the band 4 spectrum and cut the deal with the FCC. All VZW LTE phones are SIM unlocked. Any AWS capable VZW phone is SIM unlocked and can use LTE on band 4. The S4 got it with an update last year.
I am probably going to do the $30 plan soon and plan to use my VZW S4. I am not going to port my number right away in case the service in my area sucks (doubtful, live in DFW in dense surburbia).
I went out off town this weekend and went to a t-mobile store and was able to get 4g service after adding the correct APN. But it is too bad that iwireless that is in my area does not use that band yet, they are staring to upgrade to that band later this year. Until then my s4 will only get edge service.
Sent from my iPad using Tapatalk
I was able to get H+ on my s4 from Verizon to tmobile by changing the network mode to global and the App to fast.T-mobile.com
Sent from my SM-G900T using XDA Free mobile app
With the announcement of the T Mobile $100 2 line unlimited everything, I'm also interested in bringing my Verizon S4 MDK boot loader phone to T Mobile, but want to do my research first-- is it as simple as signing up for T Mobile and getting one of their SIMs and then-- would I be able to flash any of the ROMs in the S4 T Mobile Dev forum or is the T Mobile S4 a completely different device? Any caveats? Would I have to LokiDoki after the flash? Would I need to flash a T Mobile specific radio too (currently on i545vrufnk1)? Or is that all just overcomplicating things? Would i be able to just adjust the APNs on my current ROM after inserting a T Mobile SIM?
Sent from my SCH-I545 using Tapatalk
Quick reply to my post and for anyone else interested-- there's a post here that talks about using a 4.4.2 T-Mobile ROM by Fenny on the a Verizon S4: http://forum.xda-developers.com/showthread.php?p=57453019 I've tried it and LTE works great, MMS works properly, phone calls work as well. I'm on the Verizon i545vruamdk bootloader and Verizon i545vrufnk1 radio. The ROM is a T-Mobile m919uvufnb4 by Fenny.
Sent from my SGH-M919 using Tapatalk

WiFi calling on non-branded M8

I'm considering switching from ATT, but my understanding is that wifi calling is only available with TMO branded phones. Mine is the factory unlocked model (BS_US001/0P6B12000). I'm SuperCID, so was wondering if I could emulate a TMO phone by flashing their RUU. Would I have to change my MID (if that is even possible)?
bruce7373 said:
I'm considering switching from ATT, but my understanding is that wifi calling is only available with TMO branded phones. Mine is the factory unlocked model (BS_US001/0P6B12000). I'm SuperCID, so was wondering if I could emulate a TMO phone by flashing their RUU. Would I have to change my MID (if that is even possible)?
Click to expand...
Click to collapse
yes change the mid then u can flash there ruu
[email protected] said:
yes change the mid then u can flash there ruu
Click to expand...
Click to collapse
Did u try this yet ?
I have a vas m8 running on tmo and in the viperone threads in the general HTC one m8 section, j to the an, said if I tried something like that it would go for a hard brick easy. But my be cuz my phone is a cdma variant? Who knows. I just ask.
Sent from my HTC One_M8 using XDA Free mobile app
There are a few custom ROMs that allow TMO WiFi calling. I know, and have tested, both Viper and Sky Dragon. While they are obviously not stock, they both work on my BS_US002.
Just flash T-MO RUU after SuperCid'ing. I have the same terminal and got around that issue following those steps!. Remember to do your backups.
rpimentel1 said:
Just flash T-MO RUU after SuperCid'ing. I have the same terminal and got around that issue following those steps!. Remember to do your backups.
Click to expand...
Click to collapse
I was assuming you has a gsm varient when I said change the mid then flash their ruu. At&t and t-mobile are gsm, Verizon and Sprint varients are cdma . Never mix gsm and cdma anything,if your varient is cdma don't bother looking at gsm formums at all
[email protected] said:
I was assuming you has a gsm varient when I said change the mid then flash their ruu. At&t and t-mobile are gsm, Verizon and Sprint varients are cdma . Never mix gsm and cdma anything,if your varient is cdma don't bother looking at gsm formums at all
Click to expand...
Click to collapse
op is AT&T (GSM) wants to emulate TMO (GSM) as well. what are you talking about?
rpimentel1 said:
op is AT&T (GSM) wants to emulate TMO (GSM) as well. what are you talking about?
Click to expand...
Click to collapse
Taking about me. Cuz I'm vzw and AT&T is gsm. I forgot bout that, duh... But I am able to run gsm type Rom with little to no problem....I'm just looking to see how I can enable all gsm lte bands for use. I try to drive and between towers I lose signal and can't reconnect, so I either have to toggle airplane to get it back, or just use hspa. It runs ok... But I'd like to get full potential.
Sent from my HTC One_M8 using XDA Free mobile app
rpalmerin said:
Taking about me. Cuz I'm vzw and AT&T is gsm. I forgot bout that, duh... But I am able to run gsm type Rom with little to no problem....I'm just looking to see how I can enable all gsm lte bands for use. I try to drive and between towers I lose signal and can't reconnect, so I either have to toggle airplane to get it back, or just use hspa. It runs ok... But I'd like to get full potential.
Sent from my HTC One_M8 using XDA Free mobile app
Click to expand...
Click to collapse
Sounds like some sort of Kernel incompatibility, have you tried reinstalling everything from scratch?
rpalmerin said:
Taking about me. Cuz I'm vzw and AT&T is gsm. I forgot bout that, duh... But I am able to run gsm type Rom with little to no problem....I'm just looking to see how I can enable all gsm lte bands for use. I try to drive and between towers I lose signal and can't reconnect, so I either have to toggle airplane to get it back, or just use hspa. It runs ok... But I'd like to get full potential.
Sent from my HTC One_M8 using XDA Free mobile app
Click to expand...
Click to collapse
A Cdma varient never can be full potential of the gsm varient. i use to have the sprint varient and i unlocked it to tmobile, yes it worked, but it wouldnt stay connected to tmobile, i would constantly have to manually search for tmobile network, so if i never looked at my phone it would just disconnect by itself, i received calls fine but text messages would come once i connected to tmobile again.
plus the hardware is just not capable of all the gsm bands, so to get full potential, sell it and get a gsm one

Unlocked at&t m8 only gets edge on T-Mobile please help

What's up guys so let me start out by stating I am no noob when it comes to ROM related funness however I am new to HTC stuff. I bought a at&t HTC one m8 and unlocked the phone then unlocked the bootloader and S off then realized I could only get edge data so I did some reaserch and really can't find anything in how to fix this minus I read how to change the cid to cid 11111111 but still I have no LTE 4g hspa or even 3g any help will be greatly appreciate thanks in advanced.
Sent from my m8 using Tapatalk
This may sound silly, but do you have the right APN? If you have, then may be reflash of the firmware can help.
harihacker said:
This may sound silly, but do you have the right APN?
Click to expand...
Click to collapse
That doesn't sound silly at all.
AT&T version supports the bands used by T-Mobile for LTE (4 and 17). Also supports all the bands used by T-Mobile for 3G, with the exception of the AWS band, which from what I'm hearing T-Mob has mostly migrated from AWS on 3G (so they can use the AWS band for LTE).
The band support is there, so either the SIM card is bad (does it work for 3G and LTE on another device) or wrong APN.

Data issues

So I have a Verizon model M9 using it with a GSM sim. Its a data sim which can roam on both T-Mobile and AT&T.
Here is my issue, T-Mobile is only EDGE in my area, and the phone works perfectly fine on that, but for some strange reason on AT&T HSPA+/3G It will work for a few min and all the sudden stop working even though "H" will still be at the top of the phone like data is there when its went away.
Its not the carrier, or the sim as this exact sim works perfectly fine with my Verizon G4, iPhone 6S, iPhone 5, and so on with no issues.
Any suggestions for those who use this model on another carrier? Or any suggestions what May be causing this?
I've changed my SKU, S-off, root, etc even running stock roms (non verizon roms) , same issue so its not Verizon software causing it. Also tried setting it to WCDMA and other settings and the issue still occurs.
Any ideas would be great! I really like this phone and hate to have to sell it and go find something else or may end up going back to my G2 for my 2nd line. Could Fast Dormancy cause this?
Thanks!
You're going to be handicapped by the physical limitations of the Verizon M9. Check out what bands T-Mobile & AT&T use and see which ones match up with your moel. The bands that the Verizon HTC M9 supports are:
LTE Band 13/4 (700/1700MHz),
CDMA/1xEVDO Rev. A (800/1900 MHz)
EDGE/GSM (850/900/1800/1900)
HSPA/UMTS(850/900/1900/2100)
computerslayer said:
You're going to be handicapped by the physical limitations of the Verizon M9. Check out what bands T-Mobile & AT&T use and see which ones match up with your moel. The bands that the Verizon HTC M9 supports are:
LTE Band 13/4 (700/1700MHz),
CDMA/1xEVDO Rev. A (800/1900 MHz)
EDGE/GSM (850/900/1800/1900)
HSPA/UMTS(850/900/1900/2100)
Click to expand...
Click to collapse
Thanks but it's not a matter of being supported. It supports AT&T 100% 2G and 3G wise. I get HSPA+ just fine without issue its a matter of the phone some how loosing data connection randomly until putting it into airplane mode or rechoosing the network under network selection. But it's fully supported AT&T 3G wise.
Sent from my iPhone using Tapatalk
There is a thread in the forums by stifilz to enable more bands but if that's not the issue than something that worked for me was here
bigp951 said:
There is a thread in the forums by stifilz to enable more bands but if that's not the issue than something that worked for me was here
Click to expand...
Click to collapse
Thanks I might try that. Yeah it's not the matter of the bands is the issue.
What's strange is I'm not having signal issues as signal is perfect it's just the weird loosing data issue while signal is perfectly fine. But worth a shot.
Sent from my iPhone using Tapatalk

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