Note 10+ unlocked Tmobile issues

[XanRules]

Post #9 & post #28 are what you're looking for.

Sent from my [device_name] using XDA-Developers Legacy app

Later posts contradict Post #9 re data speeds, and Post #9 doesn't address my other questions regarding what works, what doesn't, and if it matters.

The SamMobile firmware download mentioned in post #28 has been corrupted every time I've downloaded it (I tried three times today) and does not include the USERDATA file as far as I can tell. SamFirm seems to be complete.

 

[pcriz]

Later posts contradict Post #9 re data speeds, and Post #9 doesn't address my other questions regarding what works, what doesn't, and if it matters.

The SamMobile firmware download mentioned in post #28 has been corrupted every time I've downloaded it (I tried three times today) and does not include the USERDATA file as far as I can tell. SamFirm seems to be complete.

Just flash the u1 firmware. You won't have RCS natively and no video calling. Everything else works.

Also there is no TMobile u1 firmware. Just u1 firmware. No userdata.

 

[XanRules]

Post #9 & post #28 are what you're looking for.

Sent from my [device_name] using XDA-Developers Legacy app

Just flash the u1 firmware. You won't have RCS natively and no video calling. Everything else works.

Also there is no TMobile u1 firmware. Just u1 firmware. No userdata.

Sorry, what's the difference between the N975U firmware and the N975U1 firmware? Isn't one carrier specific and one for the unlocked phones?

 

[pcriz]

Sorry, what's the difference between the N975U firmware and the N975U1 firmware? Isn't one carrier specific and one for the unlocked phones?

The short answer is it's carrier dependant. For instance Verizon uses it's own update software handler and hides Samsung cloud.

For TMobile you listed the biggest differences. You also won't have the unlock application TMobile uses so you would need to flash back to carrier branded to get that app if you wanted to sim unlock with the app. Once it's unlocked that's it. The app hides itself and you never need to worry about it again.

But yes one is built for unlocked and one is built for carrier branded. But they are interchangeable.

 

[XanRules]

The short answer is it's carrier dependant. For instance Verizon uses it's own update software handler and hides Samsung cloud.

For TMobile you listed the biggest differences. You also won't have the unlock application TMobile uses so you would need to flash back to carrier branded to get that app if you wanted to sim unlock with the app. Once it's unlocked that's it. The app hides itself and you never need to worry about it again.

But yes one is built for unlocked and one is built for carrier branded. But they are interchangeable.

Right, okay - I have T-Mobile, but I've purchased an unlocked phone, so I guess the very short version of my question is, is there any point in flashing the T-Mobile firmware, and if so, which is that?

 

[pcriz]

Right, okay - I have T-Mobile, but I've purchased an unlocked phone, so I guess the very short version of my question is, is there any point in flashing the T-Mobile firmware, and if so, which is that?

RCS in messages and video calling, both which you said you don't need.

So no benefit at all. I am also unlocked on TMobile.

 

[XanRules]

RCS in messages and video calling, both which you said you don't need.

So no benefit at all. I am also unlocked on TMobile.

Great. Yeah, I don't video call anyone except my wife and we either use Signal or Duo and I'm not holding my breath for carrier RCS at the moment. You're one of the folks who noticed quicker data speeds unlocked, right?

Thanks for the help!

 

[pcriz]

Great. Yeah, I don't video call anyone except my wife and we either use Signal or Duo and I'm not holding my breath for carrier RCS at the moment. You're one of the folks who noticed quicker data speeds unlocked, right?

Thanks for the help!

That was my observation yes. I haven't checked much on it recently because I'm on a Korean carrier since September

 

[louforgiveno]

That was my observation yes. I haven't checked much on it recently because I'm on a Korean carrier since September

I'm surprised you say that RCS and video calling and wifi calling don't work....i have a hong kong Snapdragon and all those work for me on tmobile...
Odd how its working for some and others not.
From what i understand tmobile has stopped restricting services to non branded devices

Sent from my [device_name] using XDA-Developers Legacy app

 

[XanRules]

Yeah, now that I think of it my unlocked Pixel 2 XL hasn't given me those kinds of problems for the past couple years.

Is there anything I need to do other than pip the SIM in and turn the phone on? I thought I read something about like... Turning it on, inserting the SIM, rebooting when prompted, some degree of hoops to jump through for best results.

 

[pcriz]

I'm surprised you say that RCS and video calling and wifi calling don't work....i have a hong kong Snapdragon and all those work for me on tmobile...
Odd how its working for some and others not.
From what i understand tmobile has stopped restricting services to non branded devices

Wifi calling works, always has

---------- Post added at 11:57 AM ---------- Previous post was at 11:54 AM ----------

Yeah, now that I think of it my unlocked Pixel 2 XL hasn't given me those kinds of problems for the past couple years.

Is there anything I need to do other than pip the SIM in and turn the phone on? I thought I read something about like... Turning it on, inserting the SIM, rebooting when prompted, some degree of hoops to jump through for best results.

I dunno if your pixel is an indicator of a recent change. My OG Pixel had none of the issues with using at least wifi calling. "RCS" at the time didn't exist for every phone (T-Mobiles implementation only supported certain devices and I don't remember Google messages ever showing a read receipt option) and I don't remember if video calling existed in Android at that point either but I had no one I could call on TMobile to test it out.

 

[louforgiveno]

Yeah, now that I think of it my unlocked Pixel 2 XL hasn't given me those kinds of problems for the past couple years.

Is there anything I need to do other than pip the SIM in and turn the phone on? I thought I read something about like... Turning it on, inserting the SIM, rebooting when prompted, some degree of hoops to jump through for best results.

...not that i can remember....no special adjustments needed that i recall.
Perhaps try re-odin firmware (either one) with your active sim card inserted.

Sent from my [device_name] using XDA-Developers Legacy app

 

[SW33TOOTH]

I don't understand what I'm doing wrong. Followed the guide completly and even flashed the userdata and still nothing. No splash screen showing LTE and not 4g LTE on the status bar.

Im having the same issue.. What did you do different to get it working ?? I have no T-Mobile splash screen. Im on ( N975U1UES2ASJ8 . I tried flashing the CSC file ASH4 but Odin doesn't let me .

 

[XanRules]

Well, I'm about a week in to using my unlocked Note 10+ on TMo. No issues at all. Data speeds and call quality are perfectly adequate and nothing seems to be missing or otherwise amiss.

 

[2015Ducatimulti]

I have had my Note 10+ unlocked version for week, and last night switch to T-mobile Prepaid and wifi calling, volte and everything works like it should, and also I`m using the Google messages app with RCS and it works perfectly fine!

 

[pcriz]

I have had my Note 10+ unlocked version for week, and last night switch to T-mobile Prepaid and wifi calling, volte and everything works like it should, and also I`m using the Google messages app with RCS and it works perfectly fine!

TMobile never had issues with WiFi calling and volte on unlocked devices.

 

[m0biusace]

Im having the same issue.. What did you do different to get it working ?? I have no T-Mobile splash screen. Im on ( N975U1UES2ASJ8 . I tried flashing the CSC file ASH4 but Odin doesn't let me .

Same issue here. XAA unlocked Note 10+. Inserting tmobile sim (or sprint, or att) does not install any carrier firmware. Installing the tmobile N975USQS2ASJ8 from samfirm with the tmobile userdata does not result in any magenta splash screen/HD voice. It still says XAA/XAA/XAA too! Seems the multi-CSC is not functioning with ASJ8.

 

[dottat]

Same issue here. XAA unlocked Note 10+. Inserting tmobile sim (or sprint, or att) does not install any carrier firmware. Installing the tmobile N975USQS2ASJ8 from samfirm with the tmobile userdata does not result in any magenta splash screen/HD voice. It still says XAA/XAA/XAA too! Seems the multi-CSC is not functioning with ASJ8.

Did you factory reset before putting your sim back in?

 

[m0biusace]

Did you factory reset before putting your sim back in?

Not sure what that would achieve -- the phone should be factory reset following flashing.
In any case, I did what you described. Flashed ASJ8, went through setup, factory reset, went through setup, put tmobile sim in. No blue screen with a sim card icon where it changes csc. Still XAA/XAA/XAA.

 

[dottat]

Not sure what that would achieve -- the phone should be factory reset following flashing.
In any case, I did what you described. Flashed ASJ8, went through setup, factory reset, went through setup, put tmobile sim in. No blue screen with a sim card icon where it changes csc. Still XAA/XAA/XAA.

I'm talking about flashing this j8. U1. You won't get the carrier changes needed to the phone unless you flash that first and get the prompt to reboot. After you get that just once you can then flash the U j8.

https://www.androidfilehost.com/?fid=4349826312261647901