VOLTE issues - Samsung Galaxy S8 Questions and Answers

I have a Canadian Bell Samsung S8+ Unlock with a T-Mobile simcard
My issue is that i can't make call on lte it roll back on 2-3g network i don't have the volte switch what going on ??? Is there eny fix or Can i flash the T-Mobile rom to fix this or???

shkdwn said:
I have a Canadian Bell Samsung S8+ Unlock with a T-Mobile simcard
My issue is that i can't make call on lte it roll back on 2-3g network i don't have the volte switch what going on ??? Is there eny fix or Can i flash the T-Mobile rom to fix this or???
Click to expand...
Click to collapse
Does TMobile support VoLTE? If it does You can try TMobile firmware which would have VoLTE enabled in the csc files

callumbr1 said:
Does TMobile support VoLTE? If it does You can try TMobile firmware which would have VoLTE enabled in the csc files
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Click to collapse
That what im trying to know if can flash just the csc part and not bricking my phone

shkdwn said:
That what im trying to know if can flash just the csc part and not bricking my phone
Click to expand...
Click to collapse
No you won't brick

TheMadScientist said:
No you won't brick
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Click to collapse
Does it trigger knox ?

shkdwn said:
Does it trigger knox ?
Click to expand...
Click to collapse
You can't trip know on a US snap dragon device. All the csc is. Is carrier information and settings....
I can't say you can't trip Knox but in our everyday flashing. Even being rooted we cannot trip Knox.

Related

So my modem is funked!

Hi guys, so I deccided to update my Kitkat to the new Lollipop. Biggest msitake this week. Its been 4 days that I've been tryign to fix this with no luck.
So I lost my LTE connection and I cannot get it back. I flashed so many modems and bootloaders with no luck. Some will give me 3g but never LTE even though the modem says LTE on it. Random reboots. Can someone please help!?
gspotr said:
Hi guys, so I deccided to update my Kitkat to the new Lollipop. Biggest msitake this week. Its been 4 days that I've been tryign to fix this with no luck.
So I lost my LTE connection and I cannot get it back. I flashed so many modems and bootloaders with no luck. Some will give me 3g but never LTE even though the modem says LTE on it. Random reboots. Can someone please help!?
Click to expand...
Click to collapse
Dial *#1234# and tell me what appears.
Joku1981 said:
Dial *#1234# and tell me what appears.
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Click to collapse
It says "Connection problem or invalid MMI code"
Mind you I tried different basebands and bootloader via Odin.
gspotr said:
It says "Connection problem or invalid MMI code"
Mind you I tried different basebands and bootloader via Odin.
Click to expand...
Click to collapse
Reflash stock Lollipop.
Joku1981 said:
Reflash stock Lollipop.
Click to expand...
Click to collapse
Can you please elaborate a bit? What happened? I flashed a custom ROM why did it do that?
And where do I find a stock Lollipop ROM?
gspotr said:
Can you please elaborate a bit? What happened? I flashed a custom ROM why did it do that?
And where do I find a stock Lollipop ROM?
Click to expand...
Click to collapse
1. This seems problem of the custom ROM. You can ask in the correct thread of the custom rom or simply flash stock lollipop (step 2).
2. HERE.
Joku1981 said:
1. This seems problem of the custom ROM. You can ask in the correct thread of the custom rom or simply flash stock lollipop (step 2).
2. HERE.
Click to expand...
Click to collapse
There is no Lollipop for mine. There is only 4.4.2? What do I do here?
And isn't there a way for correcting this without reflashing stock ROM?
gspotr said:
There is no Lollipop for mine. There is only 4.4.2? What do I do here?
And isn't there a way for correcting this without reflashing stock ROM?
Click to expand...
Click to collapse
Are you in Telstra, Optus, Vodafone or your device is unlocked?
Joku1981 said:
Are you in Telstra, Optus, Vodafone or your device is unlocked?
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Click to collapse
Optus. And its unlocked (bought outright nor from Optus.
gspotr said:
Optus. And its unlocked (bought outright nor from Optus.
Click to expand...
Click to collapse
You can flash UK Lollipop firmware if is unlocked. They use the same Bands for 4G:
- Australia -> 4G LTE Optus 1800/2300Mhz.
- UK -> 4G LTE 800/1800Mhz/2600Mhz/3500/3600Mhz.
Joku1981 said:
You can flash UK Lollipop firmware if is unlocked. They use the same Bands for 4G:
- Australia -> 4G LTE Optus 1800/2300Mhz.
- UK -> 4G LTE 800/1800Mhz/2600Mhz/3500/3600Mhz.
Click to expand...
Click to collapse
Once I download and flash this.. can I reflash the custom one on top? Do i need to reroot? Sorry for them nooby questions..
gspotr said:
Once I download and flash this.. can I reflash the custom one on top? Do i need to reroot? Sorry for them nooby questions..
Click to expand...
Click to collapse
I flashed the stock ROM.. lost my root. How do I root the phone on 5.0.1 stock?
in reply
gspotr said:
Hi guys, so I deccided to update my Kitkat to the new Lollipop. Biggest msitake this week. Its been 4 days that I've been tryign to fix this with no luck.
So I lost my LTE connection and I cannot get it back. I flashed so many modems and bootloaders with no luck. Some will give me 3g but never LTE even though the modem says LTE on it. Random reboots. Can someone please help!?
Click to expand...
Click to collapse
I never flashed my radio when i changed my rom, how did you flash? and whats your model number? chances are you flashed a radio not native to your region

Possible to use international firmware on Verizon S7E?

I know that the AT&T and T-Mobile variant of the S7E can use the custom international firmware, but can our variant do the same? Like can I use any of the SM-G935U or SM-G935F, I know this is a newbie question, but I'm asking because I had a S4 and I could load custom roms on my S4, but I'm not sure about now since I switched to iphone then switched back.
LancerEvoDrifter said:
I know that the AT&T and T-Mobile variant of the S7E can use the custom international firmware, but can our variant do the same? Like can I use any of the SM-G935U or SM-G935F, I know this is a newbie question, but I'm asking because I had a S4 and I could load custom roms on my S4, but I'm not sure about now since I switched to iphone then switched back.
Click to expand...
Click to collapse
Do you have the U phone? If it's the U firmware you have then you can flash major US carrier firmware onto the phone and vice versa.
Outbreak444 said:
Do you have the U phone? If it's the U firmware you have then you can flash major US carrier firmware onto the phone and vice versa.
Click to expand...
Click to collapse
I have the SM-G935V (Which is the US Verizon with the Snapdragon 820) so I'm not sure if I can flash the firmware in the first place
LancerEvoDrifter said:
I have the SM-G935V (Which is the US Verizon with the Snapdragon 820) so I'm not sure if I can flash the firmware in the first place
Click to expand...
Click to collapse
Then yes, you can flash the US's international U firmware onto your phone.
Outbreak444 said:
Then yes, you can flash the US's international U firmware onto your phone.
Click to expand...
Click to collapse
So I'm guessing that the SM-G935F firmware is something I can't install on my SM-G935V, since its using different hardware than my phone? (Kinda wanted to ask because theres more selection on the F firmware than the U firmware
LancerEvoDrifter said:
So I'm guessing that the SM-G935F firmware is something I can't install on my SM-G935V, since its using different hardware than my phone? (Kinda wanted to ask because theres more selection on the F firmware than the U firmware
Click to expand...
Click to collapse
You're right. The F cannot be installed unless someone finds a way to port it over but the U firmware can be flashed without a problem.
Outbreak444 said:
You're right. The F cannot be installed unless someone finds a way to port it over but the U firmware can be flashed without a problem.
Click to expand...
Click to collapse
And other carriers firmware (T-Mobile,AT&T,Sprint) can be flashed on the verizon phone, is that correct?
LancerEvoDrifter said:
And other carriers firmware (T-Mobile,AT&T,Sprint) can be flashed on the verizon phone, is that correct?
Click to expand...
Click to collapse
From what I've seen that is correct. There are different roms available for each carrier as well if you plan on swapping a lot.

VoLTE in India

Hey Guys, please help me out here... I have a US TMobile variant s7 edge, flashed SM935U however unable to use VoLTE.. I have been told that I cannot flash an Indian firmware, isnt there any other solution out there that can help me enable VoLTE.. Im using a calling app to make and send calls/sms.. someone pls helppp...
If the local carriers don't support VoLTE, nothing you do can allow you to use it.
Sent from my Galaxy S7 Edge Duos via Tapatalk
chanchan05 said:
If the local carriers don't support VoLTE, nothing you do can allow you to use it.
Click to expand...
Click to collapse
Hi Chanchan,
The local carrier supports ONLY VoLTE hence making it imperative for me to enable VoLTE!! Any solutions??
Flash the INS CSC and you'll be golden.
sourabhsrinivas said:
Flash the INS CSC and you'll be golden.
Click to expand...
Click to collapse
snapdragon tmobile
exyn is indian
sourabhsrinivas said:
Flash the INS CSC and you'll be golden.
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Click to collapse
Will that not brick the phone as Indian firmware is dual sim and on a different chipset...
Yes it will brick. Basically your only option is a new phone.
Sent from my SM-G935F using Tapatalk
Use BTU
k****ij84 said:
Use BTU
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Click to collapse
BTU? What's that, how can I make that work..Sorry Im new to this so not sure what BTU stands for...Any link/video u can direct me to??
BTU is UK firmware, just search the forum's here on s7edge
k****ij84 said:
BTU is UK firmware, just search the forum's here on s7edge
Click to expand...
Click to collapse
Gotcha.. If i flash btu on 935u that will enable my phone to use VoLTE in India??
Don't flash BTU. Your phone will be bricked. As all International models are in exynos you can't flash an exynos Rom over snapdragon
Sent from my SM-G935F using Tapatalk
For VoLTE you need an Indian localized rom (for Samsung usually the local unbranded one works, too). Since in India the Exynos variant is distributed you will have a hard time to find a suitable rom for your Snapdragon one. If your provider does not have any app based solution you may be out of luck.
Volte mobile is good i love all features and speed of this phone. I like its work fast and did not hung.
S7 Edge said:
Will that not brick the phone as Indian firmware is dual sim and on a different chipset...
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Click to collapse
Sorry! Didn't realise that! :3
Did you find some solution?
No! No solution yet...
Success... Hello Jio
junear said:
Did you find some solution?
Click to expand...
Click to collapse
S7 Edge said:
No! No solution yet...
Click to expand...
Click to collapse
I was in the same boat... Just flashed a U firmware over USA model and rooted it.
Then via flashfire, Flash this CSC Which was basically pulled out from S8 CSC selector file by @Tkkg1994
VoLTE should pop-up after reboot.
Even wifi calling toggle comes up but Jio is yet to implement the feature (Don't turn it on... you'll miss calls when on wifi)
Thank the original developers.
nimms said:
I was in the same boat... Just flashed a U firmware over USA model and rooted it.
Then via flashfire, Flash this CSC Which was basically pulled out from S8 CSC selector file by @Tkkg1994
VoLTE should pop-up after reboot.
Even wifi calling toggle comes up but Jio is yet to implement the feature (Don't turn it on... you'll miss calls when on wifi)
Thank the original developers.
Click to expand...
Click to collapse
Unfortunately I wont be able to root, but will check how this CSC can be used with Odin.
junear said:
Unfortunately I wont be able to root, but will check how this CSC can be used with Odin.
Click to expand...
Click to collapse
Why can't you root? You can't use this CSC via Odin.. it's a flashable zip.

[Q] Good stock ROM

Hello everyone, I'm looking for a ROM stock that have these things: VoLTE, unbranded, and that appears the LTE data indicator (not 4G). I using the CSC TPA and this ROM doesn't have the VoLTE function. Note: I don't want root the phone (yet).
danielcuervog said:
Hello everyone, I'm looking for a ROM stock that have these things: VoLTE, unbranded, and that appears the LTE data indicator (not 4G). I using the CSC TPA and this ROM doesn't have the VoLTE function. Note: I don't want root the phone (yet).
Click to expand...
Click to collapse
wrong thread...and if you dont root you wont get any vustom roms on it
danielcuervog said:
Hello everyone, I'm looking for a ROM stock that have these things: VoLTE, unbranded, and that appears the LTE data indicator (not 4G). I using the CSC TPA and this ROM doesn't have the VoLTE function. Note: I don't want root the phone (yet).
Click to expand...
Click to collapse
stay on what you're using then. based on what i think if your carrier provider csc doesnt support volte then you're out of luck.
or yiu are on the wrong fw for your country which then you can use odin to flash it and you don't need root to do so
teddytsen said:
stay on what you're using then. based on what i think if your carrier provider csc doesnt support volte then you're out of luck.
or yiu are on the wrong fw for your country which then you can use odin to flash it and you don't need root to do so
Click to expand...
Click to collapse
Yes, I understand. But are they a ROM or CSC that have I said?
danielcuervog said:
Yes, I understand. But are they a ROM or CSC that have I said?
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Click to collapse
im sorry, what?

Can I flash my S8(GM-950u1) to S8(GM-950FD) (INS version) to obtain VOLTE?

I have an unlocked S8(GM-950u1) and I don't have VOLTE option. So if I want to have volte as an option, can I flash my phone to (GM-950FD)? If no, which firmware should I flash such that I get VOLTE as an option?
monk1998 said:
I have an unlocked S8(GM-950u1) and I don't have VOLTE option. So if I want to have volte as an option, can I flash my phone to (GM-950FD)? If no, which firmware should I flash such that I get VOLTE as an option?
Click to expand...
Click to collapse
No you'll hardbrick trying
TheMadScientist said:
No you'll hardbrick trying
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Click to collapse
I second this, clearer phone call audio is not worth bricking your device for
monk1998 said:
I have an unlocked S8(GM-950u1) and I don't have VOLTE option. So if I want to have volte as an option, can I flash my phone to (GM-950FD)? If no, which firmware should I flash such that I get VOLTE as an option?
Click to expand...
Click to collapse
You might be able to flash your carriers csc and it may be enabled then. Thus turning the device into a 950u. But any f is a exynos edition and cannot be in anyway flashed to a u device
TheMadScientist said:
You might be able to flash your carriers csc and it may be enabled then. Thus turning the device into a 950u. But any f is a exynos edition and cannot be in anyway flashed to a u device
Click to expand...
Click to collapse
Hi how can I change csc? I got G955N and my network in global roaming. I don't know why. It won't has option to select 4G or 3G in mobile network section.
YosephYo Tangly said:
Hi how can I change csc? I got G955N and my network in global roaming. I don't know why. It won't has option to select 4G or 3G in mobile network section.
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Click to collapse
There are many guides on csc swapping in the general section

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