Develop Bugs

Samsung s8 plus wifi calling on T-Mobile

I purchased my s8 plus in Kuwait city from the Samsung store. Just got it on the the T-Mobile network and the Wi-Fi calling will not even show up as an option. This is a no go for me, so what options do i have? Hiw can this be fixed

YukonJoe said:
I purchased my s8 plus in Kuwait city from the Samsung store. Just got it on the the T-Mobile network and the Wi-Fi calling will not even show up as an option. This is a no go for me, so what options do i have? Hiw can this be fixed
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Click to collapse
i had a similar problem. after a software update was applied automatically, I lost wifi calling b/c my inserted SIM is not tmobile despite the device being unlocked. So, I inserted a tmobile sim and used ODIN to flash the latest stock firmware, and then i got wifi calling back. I'd test it first with a Tmobile sim (i bought one off ebay) and then restart the device. If that doesn't fix it, you may have to reflash stock firmware like I did.

jt1998 said:
i had a similar problem. after a software update was applied automatically, I lost wifi calling b/c my inserted SIM is not tmobile despite the device being unlocked. So, I inserted a tmobile sim and used ODIN to flash the latest stock firmware, and then i got wifi calling back. I'd test it first with a Tmobile sim (i bought one off ebay) and then restart the device. If that doesn't fix it, you may have to reflash stock firmware like I did.
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Click to collapse
I have a T-Mobile SIM installed right now, I've shut it off and restarted numerous times. I've never used ODIN nor flashed firmware. Where would I get the correct software to do this? Also, would it make a difference if my phone is an international dual SIM?

YukonJoe said:
I have a T-Mobile SIM installed right now, I've shut it off and restarted numerous times. I've never used ODIN nor flashed firmware. Where would I get the correct software to do this? Also, would it make a difference if my phone is an international dual SIM?
Click to expand...
Click to collapse
Software and instructions are here on xda in our device forum thread.
I'm unsure about your device. Dual sim intl version is definitely a different beast. You may want to ask in that forum... Sorry.
Sent from my SM-G955U using Tapatalk

YukonJoe said:
I have a T-Mobile SIM installed right now, I've shut it off and restarted numerous times. I've never used ODIN nor flashed firmware. Where would I get the correct software to do this? Also, would it make a difference if my phone is an international dual SIM?
Click to expand...
Click to collapse
I had a similar problem and couldn't even find the wi-fi calling option, let alone enable it. Here's how I fixed it: I enabled Bixby and updated it. Then I said "Hey Bixby, enable wi-fi calling..." and not only did Bixby enable it, she located the settings. The setting lives under "Call Settings" which isn't accessible in any other way than by using Bixby (at least from what I can see).
Now wi-fi calling is enabled and I now have a whole host of additional call settings available to me.
Hope this helps.

littlemixi13 said:
I had a similar problem and couldn't even find the wi-fi calling option, let alone enable it. Here's how I fixed it: I enabled Bixby and updated it. Then I said "Hey Bixby, enable wi-fi calling..." and not only did Bixby enable it, she located the settings. The setting lives under "Call Settings" which isn't accessible in any other way than by using Bixby (at least from what I can see).
Now wi-fi calling is enabled and I now have a whole host of additional call settings available to me.
Hope this helps.
Click to expand...
Click to collapse
What network and sim are you using?
Sent from my SM-G955U using Tapatalk

jt1998 said:
What network and sim are you using?
Sent from my SM-G955U using Tapatalk
Click to expand...
Click to collapse
I'm using a TMobile SIM on the TMobile network. The settings are stock Android (not TMobile) but they can only be accessed by using Bixby. They aren't found by browsing Settings or searching the phone.
I've made several successful WiFi calls since

Verizon Advanced/HD Calling on Unlocked S9+

I currently have an Unlocked Galaxy S9+ directly from Samsung running on Verizon's network.
I can't seem to find a way to enable the HD Calling/Video Calling/Advanced Calling features.
Some rumors suspected if you installed the MyVerizon app it would enable the advanced calling menu, but that didn't work.
Is there any way to enable these features?
Is there a command through ADB to enable this?
Would I need root access?
EDIT: Model Number: SM-G965U1 - Snapdragon

No way to get Video and WiFi calling to work (yet), but go to Connections, then Mobile Networks and you can turn VoLTE Calls on or off, which is HD voice. It was there by default on my unlocked S9+ on Verizon. If you don't see it, you may need to add HD calling to your Verizon plan (it's free, but you have to login to the website and add it as a feature).

iamrobk said:
No way to get Video and WiFi calling to work (yet), but go to Connections, then Mobile Networks and you can turn VoLTE Calls on or off, which is HD voice. It was there by default on my unlocked S9+ on Verizon. If you don't see it, you may need to add HD calling to your Verizon plan (it's free, but you have to login to the website and add it as a feature).
Click to expand...
Click to collapse
Ahh, I already have VoLTE enabled. Guess I will have to wait until someone finds a way to enable those other features.
Thanks for the info!

Whatsapp and Duo appear to support video calling over WiFi

Airstream25 said:
Whatsapp and Duo appear to support video calling over WiFi
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Click to collapse
Yeah, I know that they support video calling, along with a ton of other apps, but there is a native video calling option.

They got it working on unlocked S8, using some of the APKs and CSC from the Verizon phone. See below:
https://forum.xda-developers.com/ve...to/how-to-video-wificalling-unlocked-t3615027
Or just by flashing the whole Verizon firmware on the unlocked phone (kinda defeats the purpose of getting the unlocked phone):
https://forum.xda-developers.com/ve...axy-s8-unlocked-version-wifi-calling-t3699806
So I'm hoping it's just a matter of time, as I also need the WIFI calling to work on my unlocked phone. I think that's what is needed in order to send texts over WIFI via the Verizon Message+ app, which is what I ultimately need when in poor signal areas (sending texts over WIFI, without getting a second number with Google Voice or asking people to install secondary apps like Allo/Duo). Or I could just switch to T-mobile I guess, where all these things work with the unlocked phone without the additional hassle.

Here is to hoping we can get wifi calling and native video calling working on the unlocked s9/s9+ phones for those of us on verizon.

I have the S9+ (G965U1), and I have used the included Wi-Fi Calling app.
Look for Wi-Fi Calling.

Dudeman456 said:
I have the S9+ (G965U1), and I have used the included Wi-Fi Calling app.
Look for Wi-Fi Calling.
Click to expand...
Click to collapse
I just got my unlocked S9 what do I need to do to get everything working on VZW I mean HD Calling, and video calling etc.? I've never owned Samsung Phones, I've always had unlocked bootloader HTC phones that I could do anything I wanted with. I don't know anything about Samsung accept "Odin". I still havn't put the sim card in cause I was thinking of returning the phone.

Thanks for the hint Dudeman456! I found WiFi Calling under system apps and went to its settings and activated its permissions. Now I can send text messages over WiFi using Verizon Message+ app (and not the included Messages app or Android Messages). I still don't have WiFi calling through the default phone app on S9. I wonder if there is a different phone app that I need for that purpose (Verizon Phone app?).

Same issue as my unlocked Note 8 I got from Sammy. You can enable video calling in the *#*#4636*#*# menu. You will not be able to activate WiFi calling though unless you flash the Verizon firmware. You also will not be able to use any Verizon features such as watching NFL games (but I think that is changing and won't be a Verizon exclusive) and premium visual voicemail. Really is a deal breaker for me.
Sent from my SM-G965U1 using Tapatalk

skinnytoo2 said:
Same issue as my unlocked Note 8 I got from Sammy. You can enable video calling in the *#*#4636*#*# menu. You will not be able to activate WiFi calling though unless you flash the Verizon firmware. You also will not be able to use any Verizon features such as watching NFL games (but I think that is changing and won't be a Verizon exclusive) and premium visual voicemail. Really is a deal breaker for me.
Sent from my SM-G965U1 using Tapatalk
Click to expand...
Click to collapse
What in the world does this mean "*#*#4636*#*# menu"????

All,
This is a KNOWN issue with Verizon.
I got my S9+ on Wed 3/14 from pre-order and could not get video calling to work. Went to Verizon store on Sat 3/17 preparing to wage war with them. The Verizon tech stopped me in my tracks and said it's already known. An email sent from corporate to all verizon stores indicating the problem with video calling. It is an issue with Samsung software which they are "diligently" working to correct and will push an update soon.
Notice this.. go to either MyVerizon app or the website and login. then go to devices/manage devices...then go controls then to adjust service blocks and you will see the video calling is blocked and cannot be unblocked. Apparently this is done for "our own good" until Samsung fixes the issue.
No date from the tech on when a fix will be issued.
DONT try anything crazy to enable video calling..just be patient and wait for the fix. My S9+ is unlocked too and i was assured that video calling will be enabled once a fix is issued.

ajal said:
Thanks for the hint Dudeman456! I found WiFi Calling under system apps and went to its settings and activated its permissions. Now I can send text messages over WiFi using Verizon Message+ app (and not the included Messages app or Android Messages). I still don't have WiFi calling through the default phone app on S9. I wonder if there is a different phone app that I need for that purpose (Verizon Phone app?).
Click to expand...
Click to collapse
That is odd. I am using my G965U1 on Sprint and my Wi-Fi Calling app is in the regular app drawer with everything else. I did not expect it to work, since it is Sprint, but it did. The Wi-Fi Calling app was available before placing a sim card inside.

Gnex81 said:
All,
This is a KNOWN issue with Verizon.
I got my S9+ on Wed 3/14 from pre-order and could not get video calling to work. Went to Verizon store on Sat 3/17 preparing to wage war with them. The Verizon tech stopped me in my tracks and said it's already known. An email sent from corporate to all verizon stores indicating the problem with video calling. It is an issue with Samsung software which they are "diligently" working to correct and will push an update soon.
Notice this.. go to either MyVerizon app or the website and login. then go to devices/manage devices...then go controls then to adjust service blocks and you will see the video calling is blocked and cannot be unblocked. Apparently this is done for "our own good" until Samsung fixes the issue.
No date from the tech on when a fix will be issued.
DONT try anything crazy to enable video calling..just be patient and wait for the fix. My S9+ is unlocked too and i was assured that video calling will be enabled once a fix is issued.
Click to expand...
Click to collapse
I don't think it will unblock. If you didn't buy the VZW branded phone you most likely won't get video calling. I assumed this from the start. I spent a good portion of the day speaking with a VZW 2nd level support engineer supervisor with 20 years experience. He asked is there anything else that could be done besides unblocking video calls to make me happy, because that at this time it is impossible as the phone is not a VZW phone. Look in you phone profile on their website, does a picture of your phone show up? My profile is blank, that means the phone is not in their system of phones, even though I flashed the full VZW package with bloatware and all after first a full reset. My Phone has VZW splash screen and all the advanced calling menus, in about phone it says SM-G960U, but that block cant be removed. Maybe I screwed up somewhere and alerted them by booting with a sim card in? Maybe they flagged my IMEI? I don't know but the rep said point blank they can't unblock video calling on that line, and unlocked phones are not supported.

Are you all seeing LTE+ (carrier aggregation) on your Verizon S9 devices? I'm in Vegas and my device appears to sit on B13 (700mhz) and does not hand off anywhere else.

DevalB said:
Are you all seeing LTE+ (carrier aggregation) on your Verizon S9 devices? I'm in Vegas and my device appears to sit on B13 (700mhz) and does not hand off anywhere else.
Click to expand...
Click to collapse
My S9 does not show LTE or 4G. I think there are a lot of bugs still.

skopper said:
My S9 does not show LTE or 4G. I think there are a lot of bugs still.
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Click to collapse
That's a whole other issue then. Is your device an unlocked device?

DevalB said:
That's a whole other issue then. Is your device an unlocked device?
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Click to collapse
Yes - unlocked on Verizon.

You need the right apps for Wi-Fi calling and some in framework. I don't own a s9 but that's what you need to do to get it to work. Along with some csc edits

Verizon S9 to A&T. Can I flash it??

Hi all, I switched providers today from Verizon to AT&T and my S9 is working fine with voice, data and TXT however voice mails is messed up, I had to get AT&T Visual Voice Mail from APK mirror because my voice mail wasn't working and still not dialing from the dial pad when I press and hold 1 as in the AT&T native phones.
Anyways I would like to use WiFi calls and other native AT&T features, so is it possible to flash AT&T firmware on my Verizon S9 via Odin or so???
Can anyone please direct me to the process/firmware? I am also concerned about the firmware updates that I might not get from AT&T if my S9 remains on VZW firmware.
Thank you in advance!!

Flash this OTA https://firmware.science/download?url=52758/1488/SS-G960USQU3ARG7-to-U3BRH6-UP and you'll have the BYOD update. Another thing, wifi calling on AT&T will not work at all because your IMEI is not part of the whitelist in their system to use it. I think the same goes for VoLTE but I'm not sure.

FatalONEM8 said:
Flash this OTA https://firmware.science/download?url=52758/1488/SS-G960USQU3ARG7-to-U3BRH6-UP and you'll have the BYOD update. Another thing, wifi calling on AT&T will not work at all because your IMEI is not part of the whitelist in their system to use it. I think the same goes for VoLTE but I'm not sure.
Click to expand...
Click to collapse
Thank you for the feedback FatalONEM8.
After I manually flash, do you know if the next OTAs will come automatically or I will have to manually flash them forever?
Not having access to WiFi calling is a bummer but well, if everything else works I will have to leave with
By the way my current firmware is G960USQS3ARG8, I checked and the upgrades available are G960USQU3BRH6 and G960USQS3ARH7. The later seems to be an add on by the size of it, should I apply both?
Thanks again!!

Galaxy S9 Software Update

I have a Galaxy S9 (SM-960U) purchased from T-Mobile, but unlocked and running with an AT&T SIM (among others, at times). Up until today, the phone was running the stock T-Mobile ROM which received various software updates on a monthly or every two month interval. I've installed them as they were released (while running various non-T-Mo SIM cards) and the latest was October 1, 2018. Today, I clicked the "Software Update" function and saw that a new update was available. When it installed and restarted, I noticed that the phone was running an AT&T branded ROM, along with the typical AT&T bloatware (e.g., CNN, Groupon, Amazon, AT&T-specific apps) that was not previously installed.
The other thing I noticed was that the phone now is only connecting to HSPA and HPSA+ networks, whereas before it would also connect to LTE.
I'm not sure why I suddenly received and installed an AT&T-branded ROM today when my S9 and all of my previous devices were fine running the T-Mo ROM and receiving updates as they were released. Does anyone have any insights as to what caused this change and whether future ROM updates will be carrier-specific based on the inserted SIM? In the past month I've used SIMs in Vietnam and Japan and it seems odd that ROMs would suddenly be based on the carrier of the day.
Also, any ideas about restoring LTE service? I've tried removing the SIM and powering off the device a few times, but no dice. This was a network/account-problem when I initially ported over to AT&T from T-Mo which took a lot of troubleshooting at the store (unsure of actual root cause), but it seems odd that a software update on the device would undo that.

The latest update (3BRJ5) is BYOD firmware. With B firmware, a carrier sim will change the csc of your phone to match the network you are connected on. Good luck getting LTE back, I have no idea on that.

*#*#4636#*#* entered into phone dial. That will allow to select preferred network type in device information.

jasonw3 said:
I have a Galaxy S9 (SM-960U) purchased from T-Mobile, but unlocked and running with an AT&T SIM (among others, at times). Up until today, the phone was running the stock T-Mobile ROM which received various software updates on a monthly or every two month interval. I've installed them as they were released (while running various non-T-Mo SIM cards) and the latest was October 1, 2018. Today, I clicked the "Software Update" function and saw that a new update was available. When it installed and restarted, I noticed that the phone was running an AT&T branded ROM, along with the typical AT&T bloatware (e.g., CNN, Groupon, Amazon, AT&T-specific apps) that was not previously installed.
The other thing I noticed was that the phone now is only connecting to HSPA and HPSA+ networks, whereas before it would also connect to LTE.
I'm not sure why I suddenly received and installed an AT&T-branded ROM today when my S9 and all of my previous devices were fine running the T-Mo ROM and receiving updates as they were released. Does anyone have any insights as to what caused this change and whether future ROM updates will be carrier-specific based on the inserted SIM? In the past month I've used SIMs in Vietnam and Japan and it seems odd that ROMs would suddenly be based on the carrier of the day.
Also, any ideas about restoring LTE service? I've tried removing the SIM and powering off the device a few times, but no dice. This was a network/account-problem when I initially ported over to AT&T from T-Mo which took a lot of troubleshooting at the store (unsure of actual root cause), but it seems odd that a software update on the device would undo that.
Click to expand...
Click to collapse
you have to change APN setting on the menu to reflect AT&T network. let me know if it works by changing APN.. I used to have S9+ tmobile and I was waiting for this BYOD update but i traded in my s9+ already =/ i have note 9 unlocked now..

skyethur said:
you have to change APN setting on the menu to reflect AT&T network. let me know if it works by changing APN.. I used to have S9+ tmobile and I was waiting for this BYOD update but i traded in my s9+ already =/ i have note 9 unlocked now..
Click to expand...
Click to collapse
The issue required a visit to the AT&T store, where they replaced the SIM and reset some of the network features on the back end of my account. This required a call to the retail technical support team and about 45 min. No settings were changed on the phone. The APN settings were already configured correctly (which I had confirmed as a part of initial troubleshooting).
The phone works fine now, though some features like AT&T HD Voice and the AT&T Call Protect app still don't work. I've tried contacting them twice about it and they opened a ticket but it hasn't helped. These aren't features I used before so I don't really care.

jasonw3 said:
The issue required a visit to the AT&T store, where they replaced the SIM and reset some of the network features on the back end of my account. This required a call to the retail technical support team and about 45 min. No settings were changed on the phone. The APN settings were already configured correctly (which I had confirmed as a part of initial troubleshooting).
The phone works fine now, though some features like AT&T HD Voice and the AT&T Call Protect app still don't work. I've tried contacting them twice about it and they opened a ticket but it hasn't helped. These aren't features I used before so I don't really care.
Click to expand...
Click to collapse
Keep in mind though that HD voice only available to postpaid At&t only not prepaid and they do required special sim card for hd voice but since you already changed sim card then the problem is not the sim card. You can try and dial #*#*4636*#*# and see if Volte is provisioned.. I wish i had my s9+ from tmobile but i dont have it anymore i was waiting for that byod software update.. Hd voice should work on BYOD custimization update on at&t

Will flashing my unlocked T-Mobile S9 to ATT firmware allow me to use VoLTE?

And WIFI calling?
I had read in a few places this might work. I'm also not able to sync my Galaxy watch to send texts and make calls through my phone's phone number with numbersync. I'm hoping flashing the actual ATT software might fix these problems.
Any thoughts?

iphoneislame said:
And WIFI calling?
I had read in a few places this might work. I'm also not able to sync my Galaxy watch to send texts and make calls through my phone's phone number with numbersync. I'm hoping flashing the actual ATT software might fix these problems.
Any thoughts?
Click to expand...
Click to collapse
well, the worst thing that could happen is that it doesnt work and youd need to flash your other firmware back on the device

I flashed my unlocked cricket S9 to Verizon firmware, because I was on the U1 firmware and needed cricket wifi calling back (and cricket/att firmware downloads are mia) and when I did I got absolutely nothing of Verizon and the phone was recognized as a cricket phone. So in short basically all 0U firmware is the same the same as all 0U1 is the same. It's kind of confusing but basically on 0U your sim/carrier (even if you don't have it in at setup, it remembers the last one you used) determines your 0U for you, so I don't think what you're asking will work.

iphoneislame said:
And WIFI calling?
I had read in a few places this might work. I'm also not able to sync my Galaxy watch to send texts and make calls through my phone's phone number with numbersync. I'm hoping flashing the actual ATT software might fix these problems.
Any thoughts?
Click to expand...
Click to collapse
I have heard from some people that latest(august or so) update on unlocked S10+ that is on ATT network, allows VoLTE to work