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AT&T or T-Mobile for unlocked S8+ ?

The backstory.... Preordered an ATT Note 7 and had many headaches with delivery / billing. I am now living with my old Note3 using Goggle Voice/Hangouts because of my weak signal (all carriers) at home. I'm using a pre-paid Straight Talk plan when away from home.
I've been waiting patiently for the S8+ and now need to decide between AT&T and T-Mobile for a GSM phone. I plan on paying full cash price and having it unlocked to use a 3rd part prepaid plan (Straight Talk or ?).
I considered a factory unlocked phone (Best Buy, May 9th??) but I am told that those will also have a locked bootloader. Up until the Note 7 I always ran rooted with custom ROMS. I became a big fan of Samsung Pay which I think also means a locked bootloader with no root is needed. Of coarse, bloatware sucks. I had good luck with Package Disabler Pro on my Note 7. I will be using my Google number, if only for forwarding to another number. WiFi calling is a must one way or another.
My Note 7 from ATT let me run Mobile Hotspot at the same time WiFi was enabled. This made it easy for giving my Android head unit in my car Internet access. The T-mobile version at the time needed to be turned on and off.
I'm leaning toward T-mobile only because of my bad blood with ATT. ATT coverage is marginally better in my area.
Thoughts, comments.

Either and flash the OS on it with ODIN. It is the same hardware so it doesnt matter.

mweinbach said:
Either and flash the OS on it with ODIN. It is the same hardware so it doesnt matter.
Click to expand...
Click to collapse
Yes and also if the T-Mobile version is going to have an unlocked bootloader, flashing T-Mobile firmware should allow you to unlock it through the OS.
But it's highly unlikely it will have an unlocked bootloader, although T-Mobile have supported it, I don't think it's happening.

No unlocked bootloaders on u.s.a. Carriers....

SBERG117 said:
No unlocked bootloaders on u.s.a. Carriers....
Click to expand...
Click to collapse
I get that if you buy a carrier phone and then unlock it. But what about the factory unlocked phones sold in the US?
I've heard that the bootloader on those phones is also locked, but not from a real good source of info. I've also heard international versions do not have a locked bootloader and do not support Samsung Pay. They also do not support CDMA (which doesn't bother me at all).

Interceptor777 said:
Yes and also if the T-Mobile version is going to have an unlocked bootloader, flashing T-Mobile firmware should allow you to unlock it through the OS.
But it's highly unlikely it will have an unlocked bootloader, although T-Mobile have supported it, I don't think it's happening.
Click to expand...
Click to collapse
If I flash via ODIN does that kill Samsung Pay? What about Knox?

Phredeee said:
The backstory.... Preordered an ATT Note 7 and had many headaches with delivery / billing. I am now living with my old Note3 using Goggle Voice/Hangouts because of my weak signal (all carriers) at home. I'm using a pre-paid Straight Talk plan when away from home.
I've been waiting patiently for the S8+ and now need to decide between AT&T and T-Mobile for a GSM phone. I plan on paying full cash price and having it unlocked to use a 3rd part prepaid plan (Straight Talk or ?).
I considered a factory unlocked phone (Best Buy, May 9th??) but I am told that those will also have a locked bootloader. Up until the Note 7 I always ran rooted with custom ROMS. I became a big fan of Samsung Pay which I think also means a locked bootloader with no root is needed. Of coarse, bloatware sucks. I had good luck with Package Disabler Pro on my Note 7. I will be using my Google number, if only for forwarding to another number. WiFi calling is a must one way or another.
My Note 7 from ATT let me run Mobile Hotspot at the same time WiFi was enabled. This made it easy for giving my Android head unit in my car Internet access. The T-mobile version at the time needed to be turned on and off.
I'm leaning toward T-mobile only because of my bad blood with ATT. ATT coverage is marginally better in my area.
Thoughts, comments.
Click to expand...
Click to collapse
I'm in a similar situation and my first concern is what bands both phones support. Online it seems AT&T covers both GSM providers perfectly. The info on T-Mobile and its bands is extremely lacking. My second concern is the process of unlocking either fully paid off phone for use on the other. I think I can have TMobile unlock it for me but I'm not sure how it works with AT&T. The easiest solution is the unlocked version but thats not even got a release date set in writing anywhere.

Phredeee said:
If I flash via ODIN does that kill Samsung Pay? What about Knox?
Click to expand...
Click to collapse
As long you are flashing official firmware from Samsung nothing will break. Knox will not be tripped and Samsung Pay will work.

954wrecker said:
I'm in a similar situation and my first concern is what bands both phones support. Online it seems AT&T covers both GSM providers perfectly. The info on T-Mobile and its bands is extremely lacking. My second concern is the process of unlocking either fully paid off phone for use on the other. I think I can have TMobile unlock it for me but I'm not sure how it works with AT&T. The easiest solution is the unlocked version but thats not even got a release date set in writing anywhere.
Click to expand...
Click to collapse
It is my understanding that all US (Snapdragon) phones cover all bands, including CDMA. That means you could even take an unlocked AT&T phone to Verizon. I'm not used to that! It even has LTE-U which TMo is supposed to be soon supporting.
I am an ex AT&T customer. They unlocked my Note 7, and again with the replacement, without issue. I seem to remember there was a wait period at first. 7 or 14 days?
The thing I'm considering is also the VR incentives for pre-ordering. I can tell you AT&T messed up my Note 7 pre-order. They shipped it on the release day by a slow method. I ended up going to a store and buying one outright and returning the unopened one once it arrived. That caused a billing nightmare that I had to call them every months until I finally turned it in and closed my account.

Phredeee said:
It is my understanding that all US (Snapdragon) phones cover all bands, including CDMA. That means you could even take an unlocked AT&T phone to Verizon. I'm not used to that! It even has LTE-U which TMo is supposed to be soon supporting.
I am an ex AT&T customer. They unlocked my Note 7, and again with the replacement, without issue. I seem to remember there was a wait period at first. 7 or 14 days?
The thing I'm considering is also the VR incentives for pre-ordering. I can tell you AT&T messed up my Note 7 pre-order. They shipped it on the release day by a slow method. I ended up going to a store and buying one outright and returning the unopened one once it arrived. That caused a billing nightmare that I had to call them every months until I finally turned it in and closed my account.
Click to expand...
Click to collapse
Can you recall where you read the carrier versions support all the bands just like the unlocked versions? All the info I found from the carriers shows different bands on each model.

Phredeee said:
I get that if you buy a carrier phone and then unlock it. But what about the factory unlocked phones sold in the US?
I've heard that the bootloader on those phones is also locked, but not from a real good source of info. I've also heard international versions do not have a locked bootloader and do not support Samsung Pay. They also do not support CDMA (which doesn't bother me at all).
Click to expand...
Click to collapse
You're missing what I'm saying... There will be no unlocked bootloaders on any Samsung S8 phones for the USA. You cannot get one from carrier or factory.
I think you may be mixing up Bootloader unlock and Sim unlock....

954wrecker said:
Can you recall where you read the carrier versions support all the bands just like the unlocked versions? All the info I found from the carriers shows different bands on each model.
Click to expand...
Click to collapse
I do remember that it was a story about FCC approval of the factory unlocked (SIM) phone. Keep that in mind that it may be the unbranded, factory unlocked phone only, but the article did say they were all the same. The locked carrier phones may not be so flexible.
Other things I've found.. Best Buy SIM unlocked does not get the incentives. Best Buy, and their cheaper price, does not seem to offer a T-Mo phone.
The VR incentive is attractive to me, but is not a must have. At this moment, until I can find out for sure if Samsung Pay will work on an international version, I am leaning towards a T-Mo pre-order. But that is me and my preferences YMMV. I have a major dislike for AT&T.
Looking for where I read it. In the mean time this may be interesting to you.
Model numbers http://techbeasts.com/list-of-samsung-galaxy-s8-galaxy-s8plus-model-numbers/
Frequencies https://www.frequencycheck.com/models/OyqBp/samsung-sm-g955a-galaxy-s8-td-lte-samsung-dream
The link is for the AT&T model search for other models.

954wrecker said:
Can you recall where you read the carrier versions support all the bands just like the unlocked versions? All the info I found from the carriers shows different bands on each model.
Click to expand...
Click to collapse
It appears that going by this information the factory unlocked and the AT&T are NOT the same https://www.frequencycheck.com/compare-devices/6MQWs05y/samsung-sm-g950a-galaxy-s8-td-lte-samsung-dream/samsung-sm-g950f-galaxy-s8-td-lte-samsung-dream
You're correct that it seems T-mo info is evasive.

Hello,
I would like to know, if it posible to buy the Galaxy S8 from the samsung web page (att version), then unlock it and after that flash the unlocked rom flashing it with odin.
Can someone help me?
thanks.

Just ordered the 955F from Clove...
I'm hoping that missing bands won't hurt my AT&T usage much. Or any prepaid sims I may throw in there.
Will see if the 955U info comes out before my phone, and will decide if I want to cancel.
:good::angel:

OnePlus 7 pro TMobile unlock

I bought a used OnePlus 7 pro unlocked to TMobile. This phone is paid off and has a clean IMEI.
I live in Canada and I called TMobile to get it unlocked. They basically said no. They said even if it's paid off, only the original owner can unlock.
I tried unlocking through the app, but it gives me a error 255.
Any help?

Sounds like it's not paid off, plain & simple..
A clean IMEI doesn't necessarily equate to a fully paid-off device, sometimes the financial status (delinquency/default) takes a while to present itself.
With T-Mobile's phones, once they are paid off, they are SIM Unlocked within a matter of minutes.
I'm guessing, just as with the other 12,479 posts/threads here on the same exact topic, you got a "too good to pass up deal" on the phone.
In the future, I'd avoid carrier phones unless you are actually getting service from that carrier.

You can convert it to international using the msn tool and it automatically makes it sim unlocked
Sent from my OnePlus7Pro using XDA Labs

OP bypass all that and just follow these steps, if you flash to the Android 9 international os then upgrade to a very specific Q Beta version, the option to unlock the bootloader is will be unlocked to use, then you can just upgrade to the lastest international Verizon with everything unlocked. The downside if you ever format yob will need to do these steps again.
https://www.google.com/amp/s/www.xda-developers.com/t-mobile-oneplus-7-pro-root-tutorial/amp/
---------- Post added at 03:43 PM ---------- Previous post was at 03:43 PM ----------
OP bypass all that and just follow these steps, if you flash to the Android 9 international os then upgrade to a very specific Q Beta version, the option to unlock the bootloader is will be unlocked to use, then you can just upgrade to the lastest international Verizon with everything unlocked. The downside if you ever format yob will need to do these steps again.
https://www.google.com/amp/s/www.xda-developers.com/t-mobile-oneplus-7-pro-root-tutorial/amp/

These steps will not unlock the sim card, they will unlock the bootloader so you can flash any rom you want but not the sim so you can go to a non t-mobile carrier. T-mobile has really got their claws into the phone.
I have done these steps with my t-mobile 7 pro and flashed the international rom. My phone still won't let me use a non t-mobile sim.
knuschit said:
OP bypass all that and just follow these steps, if you flash to the Android 9 international os then upgrade to a very specific Q Beta version, the option to unlock the bootloader is will be unlocked to use, then you can just upgrade to the lastest international Verizon with everything unlocked. The downside if you ever format yob will need to do these steps again.
https://www.google.com/amp/s/www.xda-developers.com/t-mobile-oneplus-7-pro-root-tutorial/amp/
---------- Post added at 03:43 PM ---------- Previous post was at 03:43 PM ----------
OP bypass all that and just follow these steps, if you flash to the Android 9 international os then upgrade to a very specific Q Beta version, the option to unlock the bootloader is will be unlocked to use, then you can just upgrade to the lastest international Verizon with everything unlocked. The downside if you ever format yob will need to do these steps again.
https://www.google.com/amp/s/www.xda-developers.com/t-mobile-oneplus-7-pro-root-tutorial/amp/
Click to expand...
Click to collapse

sffish said:
These steps will not unlock the sim card, they will unlock the bootloader so you can flash any rom you want but not the sim so you can go to a non t-mobile carrier. T-mobile has really got their claws into the phone.
I have done these steps with my t-mobile 7 pro and flashed the international rom. My phone still won't let me use a non t-mobile sim.
Click to expand...
Click to collapse
Exactly!
Even if by chance the BL unlock & ROM conversion did happen to SIM Unlock the phone, it's still not a guarantee the phone will be usable w/another network for the long haul.
A SIM Unlocked phone can be subject to blacklisting if the financial obligation is in arrears/default, with or without a SIM Unlock.
You seem to get it & I'm sorry you're stuck with a phone that's not fully functional. Hoping you didn't spend too much money on it......

KOLIOSIS said:
Sounds like it's not paid off, plain & simple..
A clean IMEI doesn't necessarily equate to a fully paid-off device, sometimes the financial status (delinquency/default) takes a while to present itself.
With T-Mobile's phones, once they are paid off, they are SIM Unlocked within a matter of minutes.
I'm guessing, just as with the other 12,479 posts/threads here on the same exact topic, you got a "too good to pass up deal" on the phone.
In the future, I'd avoid carrier phones unless you are actually getting service from that carrier.
Click to expand...
Click to collapse
For Ting, who resells T-Mobile, is it necessary to get a T-Mobile device so that the radio covers all the T-Mobile GSM bands in USA?

Alpha_Geek1 said:
For Ting, who resells T-Mobile, is it necessary to get a T-Mobile device so that the radio covers all the T-Mobile GSM bands in USA?
Click to expand...
Click to collapse
I would get either a T-Mobile phone, or, an unlocked US model.
If you're using an international unlocked phone, you're going to be missing a band or two, most likely Band 71,at minimum. YMMV whether that's going to matter much.
If you have a 5G international phone, all but Band 41 will be missing.
What phone are you planning on using?

KOLIOSIS said:
I would get either a T-Mobile phone, or, an unlocked US model.
If you're using an international unlocked phone, you're going to be missing a band or two, most likely Band 71,at minimum. YMMV whether that's going to matter much.
If you have a 5G international phone, all but Band 41 will be missing.
What phone are you planning on using?
Click to expand...
Click to collapse
Well, I bought a fleet of One Plus 7 Pro GM1915 devices from various sellers on eBay. One of them is open-box new. I came to this thread whilst waiting for answers to this post: https://forum.xda-developers.com/t/cannot-sim-unlock-brand-new-never-activated-gm1915.4373771/

Alpha_Geek1 said:
Well, I bought a fleet of One Plus 7 Pro GM1915 devices from various sellers on eBay. One of them is open-box new. I came to this thread whilst waiting for answers to this post: https://forum.xda-developers.com/t/cannot-sim-unlock-brand-new-never-activated-gm1915.4373771/
Click to expand...
Click to collapse
That particular model is the T-Mobile version, so, you should have no problem using it on TING, all of the important 2G/3G/4G bands are there.

Seriously what is the advantage of T-mobile vs Unlocked?

I have an S20U now that is unlocked. What I love is that I get the updates faster it seems (although, the S20 has had way more updates than normal). I am thinking of getting the branded Tmobile one, I have never had any issues using their software and it seems to work better on the network. I do not honestly care about "bloatware" as I will at least be getting a 256GB model.
Anyone have any experiences either way?

I don't have any experience with TMO specifically, but what I do know is that typically the carrier branded devices get their updates WAY fast and more often than the Unlocked ones. I'm in the same boat, I don't really care much one way or another about the bloat. If I don't like it I uninstall it if I can or at the very least disable it

kangi26 said:
I don't have any experience with TMO specifically, but what I do know is that typically the carrier branded devices get their updates WAY fast and more often than the Unlocked ones. I'm in the same boat, I don't really care much one way or another about the bloat. If I don't like it I uninstall it if I can or at the very least disable it
Click to expand...
Click to collapse
It is my understanding that the unlocked one can be used in any country and any network. Just switch sim card and you are done. The TMobile one, may be locked until you pay off the device. You also don't get the bloatware with unlocked (one less thing to Uninstall if you don't care for it).
Sent from my SM-N976U 5G using XDA-Developers Legacy app

Eudeferrer said:
It is my understanding that the unlocked one can be used in any country and any network. Just switch sim card and you are done. The TMobile one, may be locked until you pay off the device. You also don't get the bloatware with unlocked (one less thing to Uninstall if you don't care for it).
Sent from my SM-N976U 5G using XDA-Developers Legacy app
Click to expand...
Click to collapse
There are 2 "Kinds" of Unlocked, you're referring to SIM unlocked, the other is the U1 devices sold by Samsung. Which I suspect what the OP is referring to

kangi26 said:
typically the carrier branded devices get their updates WAY fast and more often than the Unlocked onest
Click to expand...
Click to collapse
That used to be true, but not for the last couple of years. The unlocked US Note10+ (N975U1), for example, has gone through 18 software releases in the 12 months it's been out. Many of its updates came out within the first few days of the month, and included that month's Android security patch.
T-Mobile has been lagging for the past few months in its updates for both the N975U and the N975U1, but you can manually download and flash the latest unlocked software immediately.

Also, it is my understanding that Tmobile tweaks it's cellular radio's to perform slightly better than the unlocked version of any phone used on it's network.

From my experience, AT&T, the branded phones have the extras like wifi calling and VoLTE enabled and the unlocked ones don't. Some of the video call features are missing. I wouldn't have a problem with the bloatware but AT&T seems to force it back on and there is no way to remove it without root (which i don't do anymore). This has been my experience from Note 5 , 2 of the 7's ,note 8 and the note 9 I currently use, all have been unlocked.
Sent from my Samsung SM-N960U1 using XDA Labs

Unlock has free caller ID builtin, Tmobile you have to pay for it. Unlock has no Tmobile branding or bloatware. Unlock version is easier to bypass tmobile hotspot apn, and usage limits
T-Mobile version has video calling on the phone app, unlock use to, but not anymore. There might be a few more things but I can't remember right now.
Sent from my SM-N975U1 using Tapatalk

I'm on sprint/tmo but I got the unlocked for the first time because I paid outright for the phone this time

*Omnipresent* said:
Also, it is my understanding that Tmobile tweaks [its] cellular [radios] to perform slightly better than the unlocked version of any phone used on [its] network.
Click to expand...
Click to collapse
Are you referring to the APN settings, or to something else?
https://www.t-mobile.com/support/devices/not-sold-by-t-mobile/byod-t-mobile-data-and-apn-settings

*Omnipresent* said:
Also, it is my understanding that Tmobile tweaks it's cellular radio's to perform slightly better than the unlocked version of any phone used on it's network.
Click to expand...
Click to collapse
This simply isn't true with the Samsung phones. I have had both and there definitely is no difference in connectivity in either data or calls between unlocked and carrier version.
Sent from my SM-G986U1 using Tapatalk

agree - that was a bunch of talk on this forum last year when the note 10+ was shipping . lots of cats on here were trying to say this and it was just not true. i had 3 unlocked phones on tmo and service was consistent.

Gary02468 said:
Are you referring to the APN settings, or to something else?
https://www.t-mobile.com/support/devices/not-sold-by-t-mobile/byod-t-mobile-data-and-apn-settings
Click to expand...
Click to collapse
I think he's referring to carrier aggregation. I don't know if it's a thing licked phones have that unlocked don't. I always go unlocked (so the phone feels like it's mine, lol) and can't say I've noticed a difference.

d_ganggreen said:
I have an S20U now that is unlocked. What I love is that I get the updates faster it seems (although, the S20 has had way more updates than normal). I am thinking of getting the branded Tmobile one, I have never had any issues using their software and it seems to work better on the network. I do not honestly care about "bloatware" as I will at least be getting a 256GB model.
Anyone have any experiences either way?
Click to expand...
Click to collapse
Thank you for your post. Does the Wifi Calling on Tmobile work on the Unlocked phone? I am looking at buying the unlocked 512gb model but have to have wifi calling when I am traveling internationally.

Does anyone know if the stock firmware can be flashed on any device if it's factory unlocked? I think the answer is yes, but just want to make sure before I purchase one used. I know your can flash the carrier firmware so I assume you can do the reverse.

ccommcomm said:
Thank you for your post. Does the Wifi Calling on Tmobile work on the Unlocked phone? I am looking at buying the unlocked 512gb model but have to have wifi calling when I am traveling internationally.
Click to expand...
Click to collapse
Yes. and if you follow a few of the guides here you can "unlock" video calling and RCS in Samsung messages as well. And if you are really creative, there is another guide to expanding bands and tweaking receiving antennas
And the last question, if you buy the U1 unlocked, you can flash carrier firmware or unlocked firmware either way all you want, but keep in mind going from u to u1 firmware requires a wipe.
The old "unlocked" was slower to get updates is only true if you wait for Tmobile to release it. If you use Frija and Odin, you can pretty much get it the same day Samsung releases it. I'm too impatient to wait for Tmobile to "get around to" reviewing it and re-releasing what Samsung released weeks before.
Most of the "negatives" of having unlocked are long gone at this point and it tilts more into the positives.

Compusmurf said:
Yes. and if you follow a few of the guides here you can "unlock" video calling and RCS in Samsung messages as well. And if you are really creative, there is another guide to expanding bands and tweaking receiving antennas
And the last question, if you buy the U1 unlocked, you can flash carrier firmware or unlocked firmware either way all you want, but keep in mind going from u to u1 firmware requires a wipe.
The old "unlocked" was slower to get updates is only true if you wait for Tmobile to release it. If you use Frija and Odin, you can pretty much get it the same day Samsung releases it. I'm too impatient to wait for Tmobile to "get around to" reviewing it and re-releasing what Samsung released weeks before.
Most of the "negatives" of having unlocked are long gone at this point and it tilts more into the positives.
Click to expand...
Click to collapse
U and U1 have the same radios in them, they are made specifically for the USA market. Depending on what carrier sim card you insert those bands for said USA carrier will be made available for the user. No need to expand bands. The technical specifications of the U1 and U models are listed on samsung USA website for cross referencing.

Anyone successfully using call recording feature on either version? Still looking for my U.S t-mobile variant..

T-Mo non-unlocked Samsung phones (maybe just the Note 20 Ultra though since I haven't been with Samsung since the Note 3 lol) have a bunch of issues. They're about one month behind on updates when compared to all of the other companies. Additionally, I saw someone mention that they have better mobile data quality. That is also true... I found that out once I manually switched to the Android 11 beta as my 5G speeds went from a constant 130mb/s down to 0.5 - 2mb/s without the firmware being specifically from T-Mo. In my settings, all of the mobile connection stuff is exactly the same as it was before...
Also, I don't have voicemail support. Yet another T-Mo problem (but you can easily add Samsung as a possible cause of that problem too)... Had to switch back to the Google Phone app just so that I could get old-school style voicemail (where you have to call your own phone number to get in).
---------- Post added at 11:29 AM ---------- Previous post was at 11:25 AM ----------
dj24 said:
Anyone successfully using call recording feature on either version? Still looking for my U.S t-mobile variant..
Click to expand...
Click to collapse
This hasn't worked for me either. It's starting to seem like Samsung pushed some of their development onto the phone carriers now lol.
Hey Samsung, why not just leave Android alone when you get it from Google so you don't have to cause so many problems with your own, customized (ad filled, feature removing) version moving forward? Heck, I've already had some problems with a bunch of your apps and have gotten zero help or answers from you guys. That's the reason I've switched back to a bunch of Google apps, however, half of those didn't even work on this phone!!! But I messaged Google about these problems as well, and you know what? They fixed ALL OF THEM within two weeks.
I'll definitely be buying from a different manufacturer moving forward. Even more so since there's rumours spreading around online right now that the Note 20 was the last Note phone to be released since the upcoming S21 is going to have stylus support...

The difference between unlocked and t-mobile is that unlocked gets its updates directly from Samsung and is not branded.
While t-mobile version is branded and you receive the updates from t-mobile and not from Samsung. So delay or longer waiting time on updates would happen and maybe even won't get few of the updates.
Since t-mobile has to release them, which take longer time.
Skickat från min SM-N986B via Tapatalk

[deleted]

[deleted]

My recommendation is not get a phone from a carrier. If you do, just assume it will be locked down and that's that.
Just a word of warning, I had audio issues with my op8 that were only fixed by using viper, which requires root. This is not an isolated incident. Check the OnePlus forums to see how many people have this same problem across multiple OnePlus devices.
Unlocked OP8s go for $600-$650 on swappa. That could be an option for you.

[deleted]

realnickpdx said:
Thanks for the suggestion! I will probably go with an unlocked phone then, as there were some problems with T-Mobile. Is there any difference between the "International" model and the US specific model?
Click to expand...
Click to collapse
The benefits of the international model is an unlocked bootloader out of the box. OTA updates are released more quicker than carrier updates.
As for the US model: You would need to unlock the bootloader first before any rooting can be done. Financially, you won't need to pony up every penny upfront if you chose to finance.
I hope this helps.

Not sure about the OP8, but my OP7 (red, 256gb intl version) worked perfectly on US T-Mobile. I can't say the OP8 will have all the right bands, especially for 5G. But I'm sure it will work with VOLTE and VOWifi.
If paying the full amount up front is an issue, you can finance the phone directly from oneplus. It's $59/month, for an unlocked/unbranded US phone that will 100% work on US T-Mobile 5G.

Question Exynos/HK versions: AT&T LTE band question

Hey all,
I'm looking at getting an Exynos or an HK version of the S22 series. I saw none of the other versions besides the U supports bands 29 and 30 that AT&T uses. Since they seem to be the more minor bands, how much does it matter and how much does the lack of those bands impact service? And does AT&T ban those S22 versions from their 5G networks?
I'm starting to get tired of OP, but I want something I can tinker without having to deal with AT&T's Sammy versions.
Thanks!

AT&T won't support the international models on their network or so various users have said in other posts. You end up locked out. T-Mobile doesn't do this but the long range 5G and LTE band 71 is missing from the international versions which would mean no coverage in any areas using band 71. Either way you are screwed on AT&T and T-Mobile. Don't have any info on Verizon. Best suggestion is. (Don't Do It)

Paul_Deemer said:
AT&T won't support the international models on their network or so various users have said in other posts. You end up locked out. T-Mobile doesn't do this but the long range 5G and LTE band 71 is missing from the international versions which would mean no coverage in any areas using band 71. Either way you are screwed on AT&T and T-Mobile. Don't have any info on Verizon. Best suggestion is. (Don't Do It)
Click to expand...
Click to collapse
Crap. Guess my only option would be getting an AT&T version and using a paid service to unlock the BL and SIM.
We already tried T-Mobile last year and had a really bad experience with service and network quality, so they're out.
Thanks for the info!

You might want to rethink the Exynos version and look at one of the SD versions that can be rooted.

I am afraid you will not be able to get the bootloader unlocked (I may be wrong there). Rooting is not possible on the US or Canadian S22. I just switched to TMO this year and so far have had no issues. I use their 5G home internet too.

dalepl said:
You might want to rethink the Exynos version and look at one of the SD versions that can be rooted.
Click to expand...
Click to collapse
So is that the Hong Kong and Korea versions? Again brings up the question of if bands 29 and 30 missing impacts service and if so, how much.
If I get an AT&T BL unlocked with a paid service, can I root using the method listed in another thread?

Superguy said:
Crap. Guess my only option would be getting an AT&T version and using a paid service to unlock the BL and SIM.
We already tried T-Mobile last year and had a really bad experience with service and network quality, so they're out.
Thanks for the info!
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I don't see the S22 series in the list yet. So might wanna further research that.
PSA: Unlock Bootloader on Snapdragon Galaxy Devices with SamPWND (Paid Service)
SamPWND is a paid remote service that allows you to unlock the bootloader on Snapdragon Samsung Galaxy devices sold in the USA and Canada.
www.thecustomdroid.com

There are many posts on here attesting to the fact that the US models of the S22 cannot be rooted. The BL cannot be unlocked, so no root.

May I ask what you are trying to achieve with root? Do you have something in mind or do you just want a custom ROM. There are other issues with rooting the phone. Main one is loss of Knox. This will stop the Samsung apps from working. So there is a trade-off no matter what.

dalepl said:
May I ask what you are trying to achieve with root? Do you have something in mind or do you just want a custom ROM. There are other issues with rooting the phone. Main one is loss of Knox. This will stop the Samsung apps from working. So there is a trade-off no matter what.
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There are magisk mods I run on my phone as well as some Xposed mods.
Not terribly concerned about Samsung apps. I haven't had a Samsung phone in years. Last one I had was an S8 and I only got that thru insurance when I lost my OP6.

Understand. Just wanted to let you know that things like Samsung Pay and Health Monitoring will no longer work and this can not be fixed if you change your mind. I did read that AT&T will ban any international phone from their network, so you do not want to go that way if you intend on staying with them. I think there was talk about the Korean model being SD and was missing band 71 (I think). There is no full solution out there unless a way comes along to unlock the BL.

dalepl said:
Understand. Just wanted to let you know that things like Samsung Pay and Health Monitoring will no longer work and this can not be fixed if you change your mind. I did read that AT&T will ban any international phone from their network, so you do not want to go that way if you intend on staying with them. I think there was talk about the Korean model being SD and was missing band 71 (I think). There is no full solution out there unless a way comes along to unlock the BL.
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AT&T doesn't use 71, so not a big deal. T-Mo did.
We tried T-Mo in the summer and had a horrible experience. We went running back to AT&T after 3 months.
When you say banned, are you talking about just the 5G or the entire network? I'm already blocked from 5G with my OP phones. I can't say I miss it as I wasn't impressed with it on T-Mo, and LTE does what I need it to do. Outright banning seems like a stupid thing to do, especially as a lot of foreign travelers could very well end up using AT&T while they're here. But then again, it IS AT&T ...

From what I read, AT&T will ban your IEMI if it is an international phone so it will not work on their network. They are the only ones that do this as far as I know.

https://forum.xda-developers.com/t/...lash-official-firmware-noob-friendly.4404283/
Check this out. Long read through all the posts, but may be able to answer your questions. There are other discussions on the US models and international models, so just look around.

You ain't gonna win with the U.S. Carriers. They absolutely don't want you rooting your phone on their networks. Why do you think all U.S. models have unlockable bootloader's when shipped from Samsung? Because they demand it. They also know you will try to get around it and when you do they will screw you by banning your device. If you gotta have a rooted phone move to another country lol.