SM-986U, flashed to U1, CSC won't change with sim. - Samsung Galaxy Note 20 Ultra Questions & Answers

Purchased a Note 20 Ultra SM-986U. It was unlocked by T-Mobile.
I use Cricket, which is an ATT MVNO. It generally will be "AIO" in Samsung CSC list.
I flashed the Note 20 to U1, and no matter what SIM I put in, it stays at TMB/TMB/TMB.
I have tried what I believed was the specific ATT firmware as well, but still, TMB/TMB/TMB, no matter what I do.
I saw someone post about this on reddit in the T-Mobile subreddit, but no answer yet.
Anyone have any ideas on how to get it to change?
Without that, I'm stuck with no 5g, volte, or wifi calling. I'm basically stuck with a Tmobile device...

Hello, you could try *#272* your IMEI #... you can select your CSC.. Be warned .. It could wipe your phone.
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Good luck

Related

[Q] OnePlus One In Canada - Which Providers Will Work?

Hello All,
I just got invited to purchase a One yesterday, but I am not sure what providers/carriers I am able to use it with in Canada. I was wondering if anybody had one and could tell me who it will work with or knows who it will work with. The providers that I am looking at are:
-Telus
-Rogers
-Bell
-Koodo
-Fido
-Virgin Mobile
Any and all information is appreciated.
Thanks,
Graeme
if its unlocked, then it should work with all, as they all use the same spectrum,
P.S mind sending an invite your neighbours way
OK so first thing first, koodo, Fido and virgin mobile is owned by one of the big 3, so if the phone works on the big 3 it will work on them.
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Now that is right from OnePlus One, so the only carriers I don't think will work, is carriers like wind, mobilicity, and companies like that

Accidentally pressed Band USA on Mi4c

I have pressed with this app (https://play.google.com/store/apps/details?id=com.kasitskyi.hiddensettings) Band USA on my Mi4c and now I have no signal in sim1. I live in Europe and don't know what to do. Is there any simple fix for that? I have found few but with other phones like Mi5 and so. Found this (http://forum.xda-developers.com/mi-5/development/xiaomi-mi5-qualcomm-diagnostic-drivers-t3336200)
but really don't know how to do it. I's mentioned lower :
(All you need to do is change the ban_pref* values back to the original, for the Sim-Card you changed it. Set the following values in your phone, for the Sim-Card you disabled em. (By Clicking band mode USA))
please help ...
I have try factory reset and other ROM's also now locked bootloader because of Chinese ROM but waiting for unlock. Is there anything somebody can help ???
Have found this but no luck: http://en.miui.com/thread-340101-1-1.html
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HELP G925P Invalid SIM card

Hello
I'm from Vietnam
I'm not so good at English, wish you sympathize
I use Galaxy tools =>> Preconfig =>>SPR=>> Install=>> Reboot
After G925P reset, it no radio signal
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I use Z3X unlook fail
Help me
I think the "invalid sim" message means the phone is carrier locked still.
Is there any way around this besides purchasing an "unlock" code from one of those sites? I've read numerous posts about people having their SM-G925P's SIM unlocked with Galaxy tools, but that seems to be pay-to-play software now. I had purchased my Sprint S6 Edge second-hand from someone who's Sprint account was in good standing; called Sprint and they _said_ they unlocked it via some OTA trickery but I still get the "Invalid SIM" notification upon boot.

Question Samkey and Chimeratool can't change CSC

Despite fold3 and flip3 being listed as supported both tools fails to change CSC. So don't waste your money.
Is the support informed?
It was my understanding that you don't actually change it anymore. I thought you (network) unlocked the device and the new SIM would trigger an update or you could install it through Odin.
The Sprint S10+ I purchased updated itself to T-Mobile when I switched carriers. That isn't this phone, but not something I see them reversing.
The IMEI will still trace back to a previous carrier, so the only benefit would be automatic updates for the right carrier.
Do you know any way to change csc?Will samkey support it in the future?
eddiedimitris said:
Do you know any way to change csc?Will samkey support it in the future?
Click to expand...
Click to collapse
I've asked Samkey support. It's coming soon.
Anyone tested new version?
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Voice Service says Emergency calls only. Data works but Calls and mms does not.

Hi.
I have a Galaxy J7 2016 from South Korea. The issue that I am facing right now is that I get LTE data fine on my device but I cannot make or receive calls and messages. I am currently using Verizon. When I entered *#*#4636#*#* I was able to see that I was getting a Voice Network connection but the Voice Service I got was only Emergency only. I tried changing the radio band to the us which it said it failed. I tried changing the preferred network type which also didn't help. I think it might have to do with the fact that these phones are from Korea since my LG Q7 also had the exact same problem. What makes it weird is that it works fine an a more modern phone like my Galaxy Z flip which is also from Korea.
I currently have LineageOs 17.1. However, I also had the same problem on a stock samsung rom.
Thanks. Here is a screenshot.
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