Database Info

[Q] Unlocked D2G Working On TMobile US But Questions Remain

Hi,
I'm actually not new to XDA, I 've been a member for about 3 years and used to screw with my old broken HTC G1 all kinds of ways. So ignore the newbie status, I forgot all the old login info and had to re-roll.
Anyway, so now I have a sweet shiny Droid 2 Global that I bought off a ebay for a very nice $149 buy it now in used but excellent condition.
It was listed as unlocked and obviously indeed is because I am running it on Tmobile with a tmob simcard in Dallas, tx. So, I can make calls, internet works and is ok but only on edge (2G), signal is generally pretty good overall.
My questions (after days of searching and reading up, don't tell me to search) Are these:
1. Am I already band unlocked? I can already use tmob's edge/2g, and I can see AT&T's 2g and 3g networks when I search but I can't connect to them or they don't work if I do i'm guessing because i'm on a tmobile sim and obviously can't logon to at&t.
2. If it isn't band unlocked, would doing so unlock tmobile's 3g or is that just straight up not compatible and never going to happen with or without a band unlock?
3. If not with tmobile np, can I get 3g with at&t? Especially since I already can see their 3g network when searching.
4. Wether or not I am running a custom rom or the stocker....
It says it's running 2.4.330 A956.verizon.en.us kernel android version 2.2 kernel version 2.6.32.9 build number VZW
Not sure if this is the stocker or a pre-installed XDA Rom. It boots to a clockwork recovery tool screen too before actually booting into android. Is that something added on or is it on the phone already?
Thanks in advance for any help, so happy to have a badass new phone to screw with.

1. Sure seems like it. You wouldn't be able to use the T-Mobile SIM at all otherwise.
2. T-Mobile uses 1700MHz. The D2G does not support 1700MHz. Period.
3. Yes.
4. 2.4.330 is stock Motorola Froyo firmware.
In your case it would probably be better to SBF your phone to 2.4.29 or 2.4.330, and follow the instructions in the band unlock thread to get you to Gingerbread with band unlock.

Gasai Yuno said:
1. Sure seems like it. You wouldn't be able to use the T-Mobile SIM at all otherwise.
2. T-Mobile uses 1700MHz. The D2G does not support 1700MHz. Period.
3. Yes.
4. 2.4.330 is stock Motorola Froyo firmware.
In your case it would probably be better to SBF your phone to 2.4.29 or 2.4.330, and follow the instructions in the band unlock thread to get you to Gingerbread with band unlock.
Click to expand...
Click to collapse
I would be very careful with doing an SBF to an unlocked phone. An SBF would rewrite the radio firmware and very likely undo the unlocking that's in place.
The only way that it would be safe to do so is if he still had the unlock code, then he could just re-unlock and re-apply the band unlocker after SBF'ing.

Thanks for the replies. So I guess i'm looking at switching carriers at some point for the 3g. Honestly the 2g isn't that bad though. Plus I heard that since att failed to acquire tmobile, they ended up cutting some deal to share some att tech with tmobile. So some areas will get 1900 mhz 3g at some point. Probably won't happen to me but oh well.
As for the rom, I don't think I want to update just yet. I have no unlock code since it came that way already.
If I get a code though, since it's already unlocked and rooted (i'm assuming),
Do I just toss the sbf file on an sdcard and run the update? I've installed roms on my old G1 but I don't know the exact process on the D2G yet.

benjmiester said:
If I get a code though, since it's already unlocked and rooted (i'm assuming)
Do I just toss the sbf file on an sdcard and run the update? I've installed roms on my old G1 but I don't know the exact process on the D2G yet.
Click to expand...
Click to collapse
SBF files are something else completely. SBF files contain images for every aspect of the phone, from Radios, to the operating system, kernel, and more. Think of an SBF file as a Windows CD. It helps to wipe the entire system clean and installs everything factory fresh.
SBF files reside on your hard drive, and they are flashed to the phone with a Windows app called RSD Lite. The current version is 5.6. There are links to it everywhere around the forums.

projektorboy said:
I would be very careful with doing an SBF to an unlocked phone. An SBF would rewrite the radio firmware and very likely undo the unlocking that's in place.
The only way that it would be safe to do so is if he still had the unlock code, then he could just re-unlock and re-apply the band unlocker after SBF'ing.
Click to expand...
Click to collapse
Not sure if you read my post at all.
I stated that the safest bet is to perform everything from the start, including the band unlock process.
Why the hell would someone need the unlock code at all on a device that was already SIM unlocked?
I bought my phone off eBay, unlocked, and I have no SIM unlock code stored anywhere. I SBF'd it at least 20 times by now.

Gasai Yuno said:
Not sure if you read my post at all.
I stated that the safest bet is to perform everything from the start, including the band unlock process.
Why the hell would someone need the unlock code at all on a device that was already SIM unlocked?
I bought my phone off eBay, unlocked, and I have no SIM unlock code stored anywhere. I SBF'd it at least 20 times by now.
Click to expand...
Click to collapse
Well in this case, this is good knowledge to have. I presumed that an SBF would essentially erase a SIM Unlock because it rewrites essentially every bit of data stored in the phone.
Looks like there's something else going on in these phones when they get SIM unlocked. It's nice to know that SIM unlocks are truly permanent.

I am getting a prompt now for the new OTA update. Will this be safe to do in my phone's current state then? I just keep putting it off for now because I don't want to lose any of the sim unlock or my data ability.
I know it doesn't do much, but I think it might help my battery life which drains 90% every day with only very light use and only 2g data.
It appears that I am going to be stuck on tmobile until 2013 but I can probably deal, or trade it... So I want it to be the best it can be without being fast on data obviously.

SIM lock state doesn't change.
If you're on T-Mobile USA, you definitely have the US band unlock hack performed and if you update you will lose it with no way to rollback to 2.4.x baseband.
90% battery spent per day is normal for Froyo. I get 26 to 32 hours with light use on 3G with WiFi and GPS enabled on stock 4.5.608, used to get 16 hours on 2.4.330.

Hmm, well can I flash the new one. I was reading this earlier:
http://forum.xda-developers.com/showthread.php?t=1437177
Would that do the trick?
Otherwise, is there a way to stop it from promting me from updating?

If you flash the 4.5.608 SBF image, you'll lose your US band unlock.
To disable OTA:
Rename /system/app/BlurUpdater_VZW.apk, /system/app/BlurUpdater_VZW.odex, and /system/etc/security/otacerts.zip by adding .bak to their names (e.g. otacerts.zip.bak).

Ok, I will rename those for now. I was using Astro and it said permissions no allowing me to rename so so I am going to try another browser app.
So is there nothing I can do to get this update done and get back on tmobileusa? There's a way to band unlock it again isn't there?

How many times needs one to repeat that
USA GSM BAND UNLOCK IS ONLY SUPPORTED ON THE BASEBAND FIRMWARE THAT COMES WITH 2.4.29 AND 2.4.330 FIRMWARE
?

Well that's retarded, thanks motorola/verizon for steering me away from ever purchasing one of you phones again. Looks like I will be trading or selling my phone after all. I had an offer to trade for a samsung vibrant which can be flashed to gingerbread and has a bigger, nicer looking amoled screen that I think I will go ahead and do that. Way to screw up your customer base motorola. I USED to like you guys.

Did you mean: “OMG I'm a US GSM user and I wanted to use a Motorola CDMA handset made exclusively for Verizon on my GSM network and Motorola are such jerks because they won't let me”?

Gasai Yuno said:
Did you mean: “OMG I'm a US GSM user and I wanted to use a Motorola CDMA handset made exclusively for Verizon on my GSM network and Motorola are such jerks because they won't let me”?
Click to expand...
Click to collapse
Seriously. I have no idea why he's being such a big baby about this. The phone was designed to Verizon's specifications by Motorola. It was designed to not work with Tmo/ATT from the very start. This was known by everyone at the time of the phone's release.
We were lucky in the first place to even get the ATT/Tmo hack. If someone isn't willing to put in the work to accommodate the requirements of the hack then this phone isn't for you.

projektorboy said:
Seriously. I have no idea why he's being such a big baby about this. The phone was designed to Verizon's specifications by Motorola. It was designed to not work with Tmo/ATT from the very start. This was known by everyone at the time of the phone's release.
We were lucky in the first place to even get the ATT/Tmo hack. If someone isn't willing to put in the work to accommodate the requirements of the hack then this phone isn't for you.
Click to expand...
Click to collapse
I'm not, man. I already know why this is and have known since about 5 posts ago. BTW I bought this phone off of ebay a month ago and it was 'listed as unlocked for att&t, tmobile etc' WTF am I supposed to think when I read that? Stop projecting your in-depth knowledge onto all people like it's 'common' knowledge. It's not. That's like saying I should know Obama's favorite food or whatever the hell else for example. I don't know that nor do the vast vast vast majority of people. You know who does know that? Somebody who looked it up!
The only way somebody would know that this phone is locked out of tmob's 3g is by looking that up specifically. I would like to point out that I had the phone for at least a week prior to posting at all, all the while reading up on how to get my 3g before the kind folks on the 1st page answered the final question I had about that (which is the only way I know that now). So it took at least a week of researching to discover this.... We should really close and lock this thread since it's just wasting space with my displeasure about this phone purchase. $5 says this whole ordeal is the very reason the guy was selling the phone in the first place!! (He said he was currently using it on tmobile when I asked if it was unlocked for tmob...)

Will I get T-Mobile OTA Updates If I switch Carriers?

I purchased my OnePlus 7 Pro from T-Mobile. I am switching over to AT&T today. My question is, since I am switching to a different carrier, will i still be receiving OTA Updates from T-Mobile since the phone contains their firmware/ROM version of OOS or will the updates be from OnePlus? All this may be moot if I decide to convert over to the international version, but I would still like to know.

You should switch to the international firmware. That way you get "ota" straight from oneplus and also get rid of the T-Mobile bloat thats on the phone.
https://www.xda-developers.com/t-mobile-oneplus-7-pro-international-firmware-install/

gunfan said:
You should switch to the international firmware. That way you get "ota" straight from oneplus and also get rid of the T-Mobile bloat thats on the phone.
https://www.xda-developers.com/t-mobile-oneplus-7-pro-international-firmware-install/
Click to expand...
Click to collapse
I actually already had it converted, then i had to go back to the T-Mobile firmware in order to SIM unlock my phone so I could switch carriers. I was considering staying with the T-Mobile firmware only because it's such a pain in the a$$ to have to install the backup and re-sign in on all my apps, and re-setup the phone. But the advantage of converting to international and getting updates right away is really making me lean towards reinstalling the international firmware. One thing I did notice though was that on the international version my 4G LTE signal lost signal frequently, but once I went back to the T-Mobile firmware I didn't lose signal as much, so I'm not sure what is going on with that. I don't know if anyone else has experienced weaker signal on the international version but it should definitely be addressed because I 100% was getting a weaker signal on the international version, that is part of the reason why I decided to switch to AT&T because I thought my T-Mobile coverage sucked, well it turns out that probably wasn't the case.

Convert to stock/Oneplus?

So I bought a OP7P recently, as my 6T died from a bad fall. It shows GM1925, as it was a Sprint carrier phone and concerted to T-Mobile. However, I have some issues with not being able to turn off wifi calling and getting messages (could be a google issue). Looking at the firmware, it shows 10.0.5.GM25CC, or tmobile firmware.
Is it possible to unlock and make this a fully stock phone as if from OP direct? I believe that would be international, but dont want to say the wrong thing here. It's been a while since I've rooted or messed with bootloader's and such.
As long as it works on US Tmobile I'd be good to go. Thanks for any help!

GiSS88 said:
So I bought a OP7P recently, as my 6T died from a bad fall. It shows GM1925, as it was a Sprint carrier phone and concerted to T-Mobile. However, I have some issues with not being able to turn off wifi calling and getting messages (could be a google issue). Looking at the firmware, it shows 10.0.5.GM25CC, or tmobile firmware.
Is it possible to unlock and make this a fully stock phone as if from OP direct? I believe that would be international, but dont want to say the wrong thing here. It's been a while since I've rooted or messed with bootloader's and such.
As long as it works on US Tmobile I'd be good to go. Thanks for any help!
Click to expand...
Click to collapse
Sprint MSMDownloadTool (UnBrick)
After lots of fighting with OnePlus about this, I finally managed to get my hands on the MSMDownloadTool and drivers for the Sprint variant of the OnePlus 7 Pro 5G. USE THIS AT YOUR OWN RISK! To be honest, I was EXTREMELY tired while writing...
forum.xda-developers.com
Back to sprint

pit2s said:
Sprint MSMDownloadTool (UnBrick)
After lots of fighting with OnePlus about this, I finally managed to get my hands on the MSMDownloadTool and drivers for the Sprint variant of the OnePlus 7 Pro 5G. USE THIS AT YOUR OWN RISK! To be honest, I was EXTREMELY tired while writing...
forum.xda-developers.com
Back to sprint
Click to expand...
Click to collapse
Back to Sprint, then to international? Still not clear on what I'm looking at there.

Bump for any ongoing help. Still having issues with MMS when on WiFi and "unable to establish data connection" on WiFi as well (not always, which is the strange part). I also can't adjust my APN or turn on/off Vowifi/LTE.

T-Mobile Note 10 Plus 5G

I unlocked my note 10+ 5g from t-mobile, but it won't get service with verizon.
When I install a non-tmobile sim, the software does not switch from tmobile for some reason.
Also Sam Mobile only has t-mobile and metro pcs firmware availible for the sm-n976u
Does anyone know if there is a way to get the phone working with verizon? Thanks.
-God Bless

Try clearing Sim card tool kit data.
Network reset.
Clear system cache.
Edit Access point names to correct values.
That's all I got but sure there's more. Never had use more than the above but never changed carriers. Verizon advanced tech support should be able to help... AT&T would.

The Verizon Note 10+ 5G has a different model number. So they probably won't allow the T-Mobile/Metro/AT&T version on their network

iBowToAndroid said:
The Verizon Note 10+ 5G has a different model number. So they probably won't allow the T-Mobile/Metro/AT&T version on their network
Click to expand...
Click to collapse
I think you're correct. AT&T is compatible with Tmobile but not Verizon according to B&H Photo compatibility charts.
So it look like AT&T is in your future. AT&T is easier to deal with anyway. Do not use a corporate store though, use over the phone or online AT&T.
It may be possible to change out the C port PCB for the Verizon variant. Yes that PCB controls internet access. I can't confirm this is the only difference though! That PCB is only $20 and relatively easy to change out.

blackhawk said:
I think you're correct. AT&T is compatible with Tmobile but not Verizon according to B&H Photo compatibility charts.
So it look like AT&T is in your future. AT&T is easier to deal with anyway. Do not use a corporate store though, use over the phone or online AT&T.
It may be possible to change out the C port PCB for the Verizon variant. Yes that PCB controls internet access. I can't confirm this is the only difference though! That PCB is only $20 and relatively easy to change out.
Click to expand...
Click to collapse
It's gets service with att, but it still has the tmobile boot logo. I flashed the att rom, but it didn't help. The carrier is supposed to automatically switch when you insert a different sim card right?
I also tried *#272*imei# but it says "unable to process the request"

CPR.OP546 said:
It's gets service with att, but it still has the tmobile boot logo. I flashed the att rom, but it didn't help. The carrier is supposed to automatically switch when you insert a different sim card right?
I also tried *#272*imei# but it says "unable to process the request"
Click to expand...
Click to collapse
Is it on Verizon or AT&T???
My 60 second attention span is kicking in... now.
As for switching sims I never had to.
The boot logo is the least of worries.
Be glad you didn't brick it.

blackhawk said:
Be glad you didn't brick it.
Click to expand...
Click to collapse
It's actually super difficult to hard brick a Qualcomm device, and even if it is hard bricked and only enters EDL mode, it can be fixed as long as you have the correct files.
There are too many safeguards in place between Qualcomm and Samsung - the average user will always be blocked from doing anything that would brick a device. There's really no danger in flashing firmware whatsoever

blackhawk said:
Is it on Verizon or AT&T???
My 60 second attention span is kicking in... now.
As for switching sims I never had to.
The boot logo is the least of worries.
Be glad you didn't brick it.
Click to expand...
Click to collapse
I'm trying to use it with att because it won't get service with verizon at all.
It's very annoying having the tmobile bloatware. Also it should be compatible with att's 5g, but it only gets lte.

CPR.OP546 said:
I'm trying to use it with att because it won't get service with verizon at all.
It's very annoying having the tmobile bloatware. Also it should be compatible with att's 5g, but it only gets lte.
Click to expand...
Click to collapse
So then I'm assuming that it did not automatically change over to the AT&T splash screen and bloatware when you inserted an AT&T SIM?

iBowToAndroid said:
So then I'm assuming that it did not automatically change over to the AT&T splash screen and bloatware when you inserted an AT&T SIM?
Click to expand...
Click to collapse
Right. It does not have a multi-csc mode for some reason. I thought all samsung phones had that by default.

CPR.OP546 said:
Right. It does not have a multi-csc mode for some reason. I thought all samsung phones had that by default.
Click to expand...
Click to collapse
Not all, no. But all U models should have it.
Have you tried doing a full Odin firmware flash including an AT&T USERDATA file?

iBowToAndroid said:
Not all, no. But all U models should have it.
Have you tried doing a full Odin firmware flash including an AT&T USERDATA file?
Click to expand...
Click to collapse
Yes. That is what I meant by flashing the att rom. It does not seem to make a difference.

CPR.OP546 said:
Yes. That is what I meant by flashing the att rom. It does not seem to make a difference.
Click to expand...
Click to collapse
I may have a way to do it. No guarantees though

iBowToAndroid said:
I may have a way to do it. No guarantees though
Click to expand...
Click to collapse
I'm guessing the only option left is to root the phone, and then start manually removing things.

CPR.OP546 said:
I'm guessing the only option left is to root the phone, and then start manually removing things.
Click to expand...
Click to collapse
My method doesn't involve root, no. You can't root if you've taken an OTA update in March of this year or later

I hope I can be of some help.
I recently ordered a Note 10+ 5G - Locked Verizon from a popular online re-seller. When I turned it on, I was greeted with an AT&T boot logo. I was pretty upset, but I though I'd try to get it up and running on Verizon before spending a couple weeks sending it back and getting a replacement. I tried Verizon's online software and I couldn't get beyond the IMEI change. It kept telling me that the Note's IMEI was what I was already using with my Droid, which was obviously not the case. So, I headed into my local Verizon store.
Nothing they did would get my 4G SIM to work, so they swapped out for a 5G SIM for free, then switched my hardware IMEI numbers and proceeded to have a some difficulty getting on the network. After doing a network reset, it seemingly worked. More on that below. I was getting both data and voice over network. I was able to transfer my setting, apps, etc from my Motorola Droid with Samsung Switch. The phone indicates both 3G and 4G signals as I travel around town. 5G is not available in my immediate area, though it is in some cities I occasionally travel to, but I'm unable to test that just yet. I become aware that there are differences between Verizon's 5G and other networks and it seems the non-Verizon phone I have is probably for the best in terms of compatibility.
Unfortunately, texts frequently take 10-30 seconds to send. Images, gifs and other non-text MMS can take multiple minutes to send and sometimes just fail. Other times the recipient will receive them twice. I feel like this may be due to the poor coverage at my residence. Further testing in areas of good to excellent coverage are necessary. I tried changing the network settings from Settings > Connections > Mobile Networks > Network Mode, but anything other than the default "GLOBAL" would result in a disconnect of data and voice services. The only way to fix it was Settings > General Management > Reset > Reset Network Settings. This would restore the Mode to GLOBAL and bring back data and voice services.
In an effort to remove the AT&T branding, I learned how to trigger a carrier switch, dialed the code and changed it from AT&T to XAA. That got rid of the AT&T boot animation and I was able to remove all but 2 stubborn AT&T apps. I noticed that my android version was 10 and UI was 2.5, so I set out to update.
This is where things got frustrating. Every attempt to update through the settings > software update was met with failure. Try again in 24 hours, it would say. I assumed this was because I was now using a Verizon sim on an AT&T firmware, but I wasn't sure. I thought I might be able to flash to a Verizon firmware, but after several versions and some more research, I learned that going from 976U to 976V was not possible.
So, over the course of several days, I learned a lot. I looked up the firmware releases on AT&T's website for the 976U and saw that they matched the T-Mobile and MetroPCS versions. So, I settled on a T-Mobile version of Android 11 / UI 3.1. It updated without any issues and even remained in XAA mode. No bloatware, no loading images, all settings and apps the same.
So, even though I have an unlocked AT&T Note 10+ 5G 256GB and you have a T-Mobile, the fact that we both have a 976U model, I think there is hope for you to get up and running on Verizon.
Hope this has helped.

Question U1 VS Carrier Firmware

I have a TMO S22U and basically I immediately flashed to U1. I'm just curious are there any advantages I'm missing out on being on U1 opposed to T-Mobile U? I know there probably aren't many but I'm just curious.

Some say U1 us better. I'm At&t so probably someone on Tmo will chime in. But for me, U1 offered nothing over U. I mean yes no At&t bloat but I can disable what I don't want on U to get the desired affect.

My biggest thing was the T-Mobile splash screen, it sounds SO DUMB but flashing to U1 made it literally 100% Samsung for me I'm just wondering what could have been lol

The only thing I heard, but I am not certain about is that you lose the TMO visual email capability. Otherwise I have not heard anything else. I am on TMO and I kept mine on U. As butchieboy said, I just disable what I do not want. In all reality, there is not much from TMO that is loaded on the system side. More of the bloat is from Samsung and Google.

Thanks for the speedy replies guys much appreciated

One thing I noticed when I did the same thing, was I could not get 5G Ultra Capacity to work. Not certain I was doing anything wrong, just wouldn't work for me.

I think I read somewhere that you do get it, but there is no icon for it in the U1 image. It will show 4G LTE. Check your download speeds.

dalepl said:
I think I read somewhere that you do get it, but there is no icon for it in the U1 image. It will show 4G LTE. Check your download speeds.
Click to expand...
Click to collapse
I did, 2 days apart in the same spot, the icon showed 5G as did the speed test connection type, but the speeds were much slower than 5G UC, almost 400 Mbps difference. Switched the firmware, back to the insane, almost WiFi type speeds.

Did you check the mobile networks setting to make sure 5G is available and selected?

dalepl said:
Did you check the mobile networks setting to make sure 5G is available and selected?
Click to expand...
Click to collapse
Yes, that was my first thought. It never quite worked the way I should have.

preinstalled crap apps on tmo firmware

The main benefit for me on the unlocked firmware is the built in called id and spam blocking. For att you have to pay extra and tmobile has it on its best plan. But still think it works better than tmobiles implementation. And since i change carriers often i like to always have caller id and spam blocking no matter which one i use.

SomeXGhost said:
My biggest thing was the T-Mobile splash screen, it sounds SO DUMB but flashing to U1 made it literally 100% Samsung for me I'm just wondering what could have been lol
Click to expand...
Click to collapse
Can I ask what specific firmware you used to flash to unlocked?

lmtdshady said:
Can I ask what specific firmware you used to flash to unlocked?
Click to expand...
Click to collapse
I downloaded the S980U1UEU1 firmware which on the latest update ends with AVCK. Used Frija to download it

Carrier firmwares usually get updated a week before the u1 series does.

slime340 said:
One thing I noticed when I did the same thing, was I could not get 5G Ultra Capacity to work. Not certain I was doing anything wrong, just wouldn't work for me.
Click to expand...
Click to collapse
Would've just been a considence. U1 firmware does connect to 5G UC just look at the service menu and it'll confirm if your connected to N41 or not.
But I moved back from u1 to tmv U firmware due to having weird call /sms issues where it would just stop working and only fix was a reboot. Hasn't happened since switching back to U firmware.

Here's an interesting question..
I was on TMO and I bought a S22U from TMO (unlocked it with them afterwards) and of course it was on 5GUC and everything (I used ESIM). I got another sim (Mint Mobile) and when used as primary it would show 5G+
After a while, and just out of spite of the hideous 4G LTE TMO icon I Flashed the U1 firmware.. I'm no longer using TMO as I ported my number to Mint and it has been good.. Would it make sense to return to TMO U firmware or should I stay in U1 as Im no longer using the TMO sim?

joancolmenares said:
Here's an interesting question..
I was on TMO and I bought a S22U from TMO (unlocked it with them afterwards) and of course it was on 5GUC and everything (I used ESIM). I got another sim (Mint Mobile) and when used as primary it would show 5G+
After a while, and just out of spite of the hideous 4G LTE TMO icon I Flashed the U1 firmware.. I'm no longer using TMO as I ported my number to Mint and it has been good.. Would it make sense to return to TMO U firmware or should I stay in U1 as Im no longer using the TMO sim?
Click to expand...
Click to collapse
Probably fine on U1. You're no longer connecting to anything advantageous besides updates being slightly faster with U.

I'm with T-Mobile, but purchased mine directly from Samsung.. I have the S22 Ultra U1. Since my last phone purchased from T-Mobile A52 5G. biggest change, No daily spam calls or text.. What a difference that makes.. With T-Mobile, their so called Spam blocker was notihng more than a spam attractor. Plus no more of the hidious bloat and splash screen..

I have the unlocked and I dirty flash switch between U and U1 depending on which newest ROM is out. There's absolutely no difference save for the annoying TMOB splash screen and that it says UC ... But from my extensive testing the speeds are the same whether it says 5G on the U1 or 5GUC on the U.