Volte/wificall G900A att s5 - T-Mobile Samsung Galaxy S 5

I flashed tmobile alliance rom on to my att s5, but volte isnt working. I know i am in an area where it works becuase my tmobile note 3 has it. Does anyone know if it works on the att version or it cant work at all? can i flash a tmob kernel? just curious if anyone has any helpful information.

flashcity90 said:
I flashed tmobile alliance rom on to my att s5, but volte isnt working. I know i am in an area where it works becuase my tmobile note 3 has it. Does anyone know if it works on the att version or it cant work at all? can i flash a tmob kernel? just curious if anyone has any helpful information.
Click to expand...
Click to collapse
Carriers are enabling VoLTE device by device as well. So just because it is active on your N3, doesn't necessarily mean that it is live for the S5 yet.
Did you check the service mode menu to see if VoLTE is actively configured on your device? Did a forum search find any confirmations of S5 owners, with your carrier /city having active VoLTE?
.

fffft said:
Carriers are enabling VoLTE device by device as well. So just because it is active on your N3, doesn't necessarily mean that it is live for the S5 yet.
Did you check the service mode menu to see if VoLTE is actively configured on your device? Did a forum search find any confirmations of S5 owners, with your carrier /city having active VoLTE?
.
Click to expand...
Click to collapse
s5 volte was made active on tmobile with there last base update to nf6. The alliance rom is based of tmobiles nf6 update. It is active in my city however my device is not the g900t but g900a just running the g900t rom. I know that the phones are extremely similar so i thought that volte should work. I did my searching and havent found anything helpful.

flashcity90 said:
s5 volte was made active on tmobile with there last base update to nf6. The alliance rom is based of tmobiles nf6 update. It is active in my city however my device is not the g900t but g900a just running the g900t rom. I know that the phones are extremely similar so i thought that volte should work. I did my searching and havent found anything helpful.
Click to expand...
Click to collapse
You may need to manually enable it, since you are using a 900A on TMB. And presumably not accepting TMB OTA updates.
Or alternately open a support ticket to confirm that your 900A is properly provisioned (active) for VoLTE.
You can search the forum (or my post history about 100 posts back) for details of how to find the setting in the service mode menu.
.

I got it to work; I posted the steps I took in this thread.

TMO Lollipop on G900A?
Guillaume , have you been able to experiment with any TMO Lollipop ROM and muniz_ri 's latest G900A root and update method? http://http://forum.xda-developers.com/att-galaxy-s5/general/how-to-update-to-g900aoca-5-0-keeproot-t3076803

Related

[Q] Unlocked AT&T S5 on T-Mobile

I recently unlocked and rooted my AT&T Galaxy S5 to use on T-Mobile network. However I still have AT&T firmware on the phone, and I'd really like to flash cyanogenmod, or at at the very least stock T-Mobile. Is there any way to do this? Thanks in advance!
Demeos said:
I recently unlocked and rooted my AT&T Galaxy S5 to use on T-Mobile network. However I still have AT&T firmware on the phone, and I'd really like to flash cyanogenmod, or at at the very least stock T-Mobile. Is there any way to do this? Thanks in advance!
Click to expand...
Click to collapse
Don't know if there is a Cyogenmod available for your model (SM-G900A) but there is an AllianceRom which is built off the T-mobile SM-G900T firmware which will work on the AT&T S5. However, since that version of the S5 has a locked bootloader you will need to use Safestrap Recovery instead of TWRP. You might want to look among the threads in the AT&T S5 area of this forum for more information and maybe ask your question there. I brought my unlocked AT&T S5 over to T-mobile and used it for a few months before getting a T-mobile S5. AT&T stock s5 firmware worked fine. I also did try out AllianceRom on that phone briefly but stick with stock. I don't think rom slots ever got fixed on Safestrap so only the stock rom slot could be used for flashing which is one of the reasons I chose to stick with stock on that phone.
..

Convert Verizon S5 to full T-mobile S5

I have a Galaxy S5 that was on the Verizon network. I now have it on the T-Mobile network with a T-Mobile sim but I still have all the Verizon crud.
I have it rooted and the bootloader unlocked. Can I just flash any T-Mobile stock/rooted rom and have it be a full T-Mobile phone?
I've rooted several Sprint & T-Mobile phone but have never done a carrier change. Currently it is on Verizon PB1 Lollipop.
Thanks to all.
Goob
I'm in the same boat.
mrgoober22 said:
I have a Galaxy S5 that was on the Verizon network. I now have it on the T-Mobile network with a T-Mobile sim but I still have all the Verizon crud.
I have it rooted and the bootloader unlocked. Can I just flash any T-Mobile stock/rooted rom and have it be a full T-Mobile phone?
I've rooted several Sprint & T-Mobile phone but have never done a carrier change. Currently it is on Verizon PB1 Lollipop.
Thanks to all.
Goob
Click to expand...
Click to collapse
Did you ever get it working?
No. It wasn't my phone but a friends. His main compliant was that it did not do location searches correct and I fixed that by adding the T-Mobile info. He said he would just leave the rest alone.
doesnt verizon lock its bootloaders? the device is different, it's not a G900T
slight success
i have flashed my Verizon s5 to the T-mobile based Twisted lollipop ROM.
http://forum.xda-developers.com/tmo.../rom-twi5ted-lollipop-5-0-v1-deviant-t3037766
i used this process because i had a stock 6.1 Verizon ROM which was crap.
http://forum.xda-developers.com/ver...t/rd-unlocking-galaxys-s5-bootloader-t3337909
jrkruse, guide is really helpful along with the link above.
However, i have problems with the lock screen not loading and when i turn the brightness all the way down my screen flickers with a yellow hue until i turn up the brightness. I am lead to believe that the screen flickering yellow is a hardware problem with the screen. Nevertheless, i am trying to move to a stock T-mobile Rom now even though i don't have a t-mobile kernel.
I have verizon s5 I'm attempting to do the same too... If only we could change the baseband from verizon to tmobile? I have cid 15 chip and have done the unlock. Could there be a way?
vanwixon said:
i have flashed my Verizon s5 to the T-mobile based Twisted lollipop ROM.
http://forum.xda-developers.com/tmo.../rom-twi5ted-lollipop-5-0-v1-deviant-t3037766
i used this process because i had a stock 6.1 Verizon ROM which was crap.
http://forum.xda-developers.com/ver...t/rd-unlocking-galaxys-s5-bootloader-t3337909
jrkruse, guide is really helpful along with the link above.
However, i have problems with the lock screen not loading and when i turn the brightness all the way down my screen flickers with a yellow hue until i turn up the brightness. I am lead to believe that the screen flickering yellow is a hardware problem with the screen. Nevertheless, i am trying to move to a stock T-mobile Rom now even though i don't have a t-mobile kernel.
Click to expand...
Click to collapse
This working well? I want to convert my old Verizon S5 to T-Mobile. thx!
Flash Verizon S5 to T-Mobile
I was able to get it working! I have unlocked my Verizon S5 boot loader following the directions from the Verizon S5 page under XDA. I then flashed the sm-t900 pg2 firmware with TWRP. Everything seems working fine.
flauto said:
I was able to get it working! I have unlocked my Verizon S5 boot loader following the directions from the Verizon S5 page under XDA. I then flashed the sm-t900 pg2 firmware with TWRP. Everything seems working fine.
Click to expand...
Click to collapse
Thx, I'll try it
Sent from my SM-G935U using Tapatalk

sprint unlocked S5 to T-mobile , need help

Hi,
I unlocked my phone with sprint and moved to T-mobile ..
I Rooted the S5 but still have problems with wifi calling and the wifi tethering and the MMS
I'm looking for help to fix these problems or a Rom i can use to install on my device ..:good
Thank you ..
massia said:
Hi,
I unlocked my phone with sprint and moved to T-mobile ..
I Rooted the S5 but still have problems with wifi calling and the wifi tethering and the MMS
I'm looking for help to fix these problems or a Rom i can use to install on my device ..:good
Thank you ..
Click to expand...
Click to collapse
contact TMobile Technical support for the MMS portion, the sim should be encoded already for it but if not the mms number might need to be changed on the phone
massia said:
Hi,
I unlocked my phone with sprint and moved to T-mobile ..
I Rooted the S5 but still have problems with wifi calling and the wifi tethering and the MMS
I'm looking for help to fix these problems or a Rom i can use to install on my device ..:good
Thank you ..
Click to expand...
Click to collapse
how did you get your phone unlocked? through Sprint? I tried multiple times and it still ulocked for domestic use atleast
Hey guys,
I have a SM-G900P and went through a lot of steps to get it properly working, at the best you will be able to get HSPA+ and if you do get LTE it will randomly go back to HSPA+ until you toggle airplane mode again. I now use a SM-G900T because of this very issue.
How I unlocked it: https://forum.xda-developers.com/galaxy-s5/help/sm-g900p-straight-talk-att-t3331284
IDoneApps App
Had to enable the "GCF Setting" on the phone.
Me attempting to force enable GSM LTE bands on this phone: https://forum.xda-developers.com/galaxy-s5/general/how-to-sm-g900p-lte-band-t3333760
I had a similar issue when I took my verizon s5 over to tmobile. There was an exploit to get the unlocked Dev bootloader, once I did that I was able to flash a tmobile stock rom and wifi calling and LTE started working normally. Here is a link to what I did to get it working on my phone. https://forum.xda-developers.com/showpost.php?p=71697776&postcount=280

Oreo on Three UK includes WiFi Calling and VoLTE

Title says it all really. I hadn't seen any indication that Oreo would bring any changes in the WiFi calling or VoLTE front, but the facilities that had been only available on Three branded ROMs, are available in Oreo.
Cheers for the info - on Three but using an unlocked phone so this will be useful when I've finally got the update.
xJakeyy said:
Cheers for the info - on Three but using an unlocked phone so this will be useful when I've finally got the update.
Click to expand...
Click to collapse
Same here - just flash the XEF version if you have can download it, and have access to Odin.
Great news, also on three on the unbranded note 8. I was looking for volte / wifi yesterday actually and realised I was stuck with the terrible app ! Is it available yet or are we still waiting?
davo1878 said:
Great news, also on three on the unbranded note 8. I was looking for volte / wifi yesterday actually and realised I was stuck with the terrible app ! Is it available yet or are we still waiting?
Click to expand...
Click to collapse
The release is currently only available for the XEF CSC, but as that is part of the OXM multi-CSC that covers the UK's BTU, then it's effectively identical to a UK update anyway. You can download it and flash it to your phone using Odin.
StevePritchard said:
The release is currently only available for the XEF CSC, but as that is part of the OXM multi-CSC that covers the UK's BTU, then it's effectively identical to a UK update anyway. You can download it and flash it to your phone using Odin.
Click to expand...
Click to collapse
Yeah sorry, I got to reading after I posted that and saw your post in the other thread. I'll give it a go shortly - thanks for replying mate. Much appreciated!
They’ve also updated the modem Firmware to support additional LTE bands including B32 which three are currently deploying in my area.
Occasionally callers can't hear my audio at the other end of the call whilst using WiFi calling, I'm BTU/BTU/BTU on Oreo on 3UK. Would be interesting to see if anyone else is having issues. I'll check the detailed IMS settings when I have some free time.
From the Three site:
Devices that didn't come from Three.
Right now, all 4G Super-Voice compatible*iPhones*will be 4G Super-Voice enabled once the carrier settings have been installed, even if they didn't come from Three.
4G Super-Voice doesn't work on other non-Three devices yet however, even if the manufacturer has stated that it's VoLTE compatible. We're working on this, so be sure to check back for updates.
Has anyone experienced data transmission issues on Oreo and 3 UK?
I updated to Oreo via XEF Odin flash and then Update push but was getting very intermittent and "hangy" LTE & HSDPA data transmission...
I flashed back down to 7.1.1 but if no-one else has experienced this I may try again :fingers-crossed:
S9+ (direct from Samsung) user here using my Three SIM from my old S7 Edge contract.
No WiFi calling etc, what is it that I have to do to enable it? Not flashed firmware before & I'm concerned I may void any warranty etc (on Samsung Upgrade program for the S10)
Thank you in advance for any advice.
itseggious said:
Has anyone experienced data transmission issues on Oreo and 3 UK?
I updated to Oreo via XEF Odin flash and then Update push but was getting very intermittent and "hangy" LTE & HSDPA data transmission...
I flashed back down to 7.1.1 but if no-one else has experienced this I may try again :fingers-crossed:
Click to expand...
Click to collapse
I can say that I've not noticed any data or voice issues (WiFi or otherwise) since switching to Oreo.
ToonTonic said:
S9+ (direct from Samsung) user here using my Three SIM from my old S7 Edge contract.
No WiFi calling etc, what is it that I have to do to enable it? Not flashed firmware before & I'm concerned I may void any warranty etc (on Samsung Upgrade program for the S10)
Thank you in advance for any advice.
Click to expand...
Click to collapse
This is the Note 8 Forum and we are discussing the Oreo update for that specific phone. There's no guarantee that Oreo updates for other phones will include the VoLTE or WiFi Calling settings for Three. You would be better off directing your question to the S9+ forum.
StevePritchard said:
I can say that I've not noticed any data or voice issues (WiFi or otherwise) since switching to Oreo.
This is the Note 8 Forum and we are discussing the Oreo update for that specific phone. There's no guarantee that Oreo updates for other phones will include the VoLTE or WiFi Calling settings for Three. You would be better off directing your question to the S9+ forum.
Click to expand...
Click to collapse
Have note 8 n950n. Kt branded. Korean 256 gb
Upgraded to oreo lost access to ims system switch in menu. Cant access volte or video calling menu
Its providing a key for otp. Looking for pass code
Please help. See image below
hhoffa said:
Have note 8 n950n. Kt branded. Korean 256 gb
Upgraded to oreo lost access to ims system switch in menu. Cant access volte or video calling menu
Its providing a key for otp. Looking for pass code
Please help. See image below
Click to expand...
Click to collapse
I have the 950N as well. I would suggest downloading a 950F based ROM and then flashing TEKHD's CSC detonator(its in the dev section) which is T-Mobile based. It'll give you access to VoLTE and I believe video calling as well. I am currently running WETA 6.3.3 and have flashed that CSC pack. I am able to enable both the MMTEL and RCS switch. VoLTE is working fine for me now.
Sent from my SM-N950F using Tapatalk
Three UK has just been updated for oreo on samfirmware.com downloading now.
Sent from my SM-N950F using XDA-Developers Legacy app
I am using a dual sim variant SM-N950F, both Sim cards are from 3UK so can I flash this firmware to get wificalling?
I use my SIM 1 for calls and texts and SIM2 just for data.
Just want to let you know that s7 edge btu with newest oreo update have WiFi calling enabled so no need to have 3 network firmware. Hope this helps someone.
I've just purchased a note 8 (UAE version) and using with 3uk I have Wi-Fi calling without any ROM adjustments
StevePritchard said:
The release is currently only available for the XEF CSC, but as that is part of the OXM multi-CSC that covers the UK's BTU, then it's effectively identical to a UK update anyway. You can download it and flash it to your phone using Odin.
Click to expand...
Click to collapse
Is it possible for me to flash that OXM multi-CSC on my N950F model without root? I'd like to have wifi calling and volte here in US.
I'm on the N950FXXU4CRH3 build number. (XSG)
Dchoi229 said:
Is it possible for me to flash that OXM multi-CSC on my N950F model without root? I'd like to have wifi calling and volte here in US.
I'm on the N950FXXU4CRH3 build number. (XSG)
Click to expand...
Click to collapse
You can flash on your N950F, but without knowing what CSC it currently is, the results could be a little unpredictable.
However, I can't imagine it will give you what you want in the US, as none of the native CSCs in OXM target the US carriers.
Sorry to bring back an old thread but I was wondering if you could help please? Does this mean that Oreo firmware, regardless of source will allow Three's VoLTE (4G Super Voice) to work on any Note 8, even those not supplied by Three? My phone is running 8.0.0, is unlocked, and I have just ordered a Three SIM.
TIA

Question AT&T Base Firmware needed for A526U

Hello, looking for some help to see if anyone can help me find the firmware of my A526U specifically for AT&T? I have moved my phone over from TMobile where I purchased it from, and am looking to re-flash it to AT&T. Was working fine for a few months, now I'm no longer able to make or receive calls.
After inserting the new AT&T SIM card, the TMobile splash screen still shows up. The Service Provider software version reflects TMobile still as well and I'm concerned that for whatever reason the phone did not fully update after inserting the new SIM. I spent 2 hours on the phone with AT&T support after the store said they couldn't help me. Pulled the SIM card out, restarted phone, put it back in, reset network settings etc. I've searched sammobile and I cannot find the AT&T firmware, only TMobile, Sprint, and TMK. I would sincerely be greateful please if anyone could help me by pointing me in the right direction for the firmware for this model phone.
AT&T doesn't make their firmware available publicly - for any device. I have a source who can get me Samsung firmware for any USA device - even AT&T. But he charges me for each one
I appreciate the quick response! Is there any option I have here? Could I try flashing a "U1" firmware to his phone then? He's currently on A526USQS4CVA6. I actually found your other post as I was also working on my note 10 plus - https://forum.xda-developers.com/t/n975u-and-n975u1-firmware-links-here.3957648/. If I'm reading that correctly, I should be able to correct? If so, how can I tell if the version I'm downloading is "downgrading the bootloader"
aschaffer35 said:
I appreciate the quick response! Is there any option I have here? Could I try flashing a "U1" firmware to his phone then? He's currently on A526USQS4CVA6. I actually found your other post as I was also working on my note 10 plus - https://forum.xda-developers.com/t/n975u-and-n975u1-firmware-links-here.3957648/. If I'm reading that correctly, I should be able to correct? If so, how can I tell if the version I'm downloading is "downgrading the bootloader"
Click to expand...
Click to collapse
1. Yes, you can try flashing U1 if you want
2. You can't "downgrade the bootloader" - Odin won't let you.
3. In A526USQS4CVA6, "4" is the position of the bootloader level/revision/binary. Make sure that whatever U1 firmware you download also has a 4 in that spot and you'll be fine. (Or just get the firmware from Frija or one of the other similar firmware download tools, because those throw you whatever the newest version is automatically)
iBowToAndroid said:
1. Yes, you can try flashing U1 if you want
2. You can't "downgrade the bootloader" - Odin won't let you.
3. In A526USQS4CVA6, "4" is the position of the bootloader level/revision/binary. Make sure that whatever U1 firmware you download also has a 4 in that spot and you'll be fine. (Or just get the firmware from Frija or one of the other similar firmware download tools, because those throw you whatever the newest version is automatically)
Click to expand...
Click to collapse
Thank you very much sir! I shall give this a go this weekend! You guys rock!
My AT&T N10+ N975U is running on Pie. It transitioned seamlessly with no changes made on my end. It was already using 4G VoLTE though. Same sim card.
I would contact AT&T advanced tech support as there may be an easier way.
4G VoLTE needs to be enabled in hidden settings.
blackhawk said:
My AT&T N10+ N975U is running on Pie. It transitioned seamlessly with no changes made on my end. It was already using 4G VoLTE though. Same sim card.
I would contact AT&T advanced tech support as there may be an easier way.
4G VoLTE needs to be enabled in hidden settings.
Click to expand...
Click to collapse
Your AT&T phone? So it's originally an AT&T model that you're still using with them? That's not the same situation that the OP is in
iBowToAndroid said:
Your AT&T phone? So it's originally an AT&T model that you're still using with them? That's not the same situation that the OP is in
Click to expand...
Click to collapse
The U is the AT&T variant vs the U1 which is the unlocked variant, correct?
blackhawk said:
The U is the AT&T variant vs the U1 which is the unlocked variant, correct?
Click to expand...
Click to collapse
Yup. But OP has a T-Mobile model that they moved to AT&T. There's also no guarantee that a Note 10+ will work the exact same way as an A52. You're also running 3 year old firmware, while OP is fully updated.
So i don't see the correlation.
iBowToAndroid said:
Yup. But OP has a T-Mobile model that they moved to AT&T. There's also no guarantee that a Note 10+ will work the exact same way as an A52. You're also running 3 year old firmware, while OP is fully updated.
So i don't see the correlation.
Click to expand...
Click to collapse
The old firmware works fine on 4G VoLTE... that's likely not the issue. What is the issue is it wasn't running on 4G VoLTE so it's likely the settings and sim card need updating not the firmware.
Hi All, thought I would provide an update... After spending hours on the phone with AT&T support this week and being frustrated with the AT&T store, I decided to proceed forward with flashing the U1 version. What started this all was last week my son could no longer make or receive calls on his AT&T A52 phone (we ported it from TMobile September 2021). The store and AT&T advanced tech support said there were issues with people's BYOD devices, even though the A526U and A526U1 shows on the supported devices list. The store rep said he's been getting people in left and right that can't make or receive calls, and all they can do is upsell customers to an AT&T branded phone.
SO... my son's phone was on A526USQS4CVA6. Startup screen showed TMobile still, even with the AT&T SIM card in it. I proceed to flash the A526U1OYM4CVB2_ATT that I found from Sammobile. Was hoping someone had just the "U" version but I couldn't find this anywhere. When doing the flash, I used the Home_CSC file (I had to download a patched version of ODIN as it was stuck as setting up connection) and when it finished it would just keep going back to the download screen on the phone and I freaked out. I did some more research and decided to flash again using CSC instead of Home.CSC (I did a backup using smart switch on my PC luckily). This WORKED! I'm guessing because the software version he was on was different than what I was trying to flash too so maybe this is why I needed the CSC for a clean flash (there was no user data file that downloaded from SAMMOBILE).
Now, calls are working on my son's phone again! AND his service provider software version now reflects ATT vs TMB! Man this has been one heck of a journey lol. I've seen numerous forums on google of people having the same trouble with me, their BYOD devices not working. Seems a flash of U1 worked for me, so hopefully this helps others out there!

Categories

Resources