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Verizon S GS3 on Straight Talk

Hi all,
With Verizon releasing officially, the update making its SGS3 Global ready atleast for voice as of now, a lot of discussion is happening right now about the Global capabilities.
FYI. I'm a good reader and explorer on hofo,androidforums and xda. So any guidance is highly appreciated
So here is my question.
I have a Verizon S GS3. It is brand new.
1. Can I use it with Straight Talk T-Mobile SIM ( T-Mobile has good coverage near my house ) after doing the rooting, unlocking, etc. etc all the technical stuff
2. If I unlock the phone, will it be truly global capable, I mean, can I use my S GS3 on any GSM Network in the World, even in the USA, with 3G Speeds? Did anyone use it in any Country with 4G LTE Speeds?
3. I know this is really a very very strange question. But after unlocking the S GS3, will it be working on the AT&T LTE Netowrk in the USA? My thinking is, if it working in the LTE Network in the USA, then it will work in other countries as well, where LTE Network is going to be available in the future. Sorry, I know this is a bit weird.
If You can please refer and threads or links, it is fine with me. I'm also looking and not depending only on the answers that I get from this thread. But looking for replies/guidance/links though.
Thank You.

hope this is the answers you are looking for
qzmpal said:
Hi all,
With Verizon releasing officially, the update making its SGS3 Global ready atleast for voice as of now, a lot of discussion is happening right now about the Global capabilities.
FYI. I'm a good reader and explorer on hofo,androidforums and xda. So any guidance is highly appreciated
So here is my question.
I have a Verizon S GS3. It is brand new.
1. Can I use it with Straight Talk T-Mobile SIM ( T-Mobile has good coverage near my house ) after doing the rooting, unlocking, etc. etc all the technical stuff
2. If I unlock the phone, will it be truly global capable, I mean, can I use my S GS3 on any GSM Network in the World, even in the USA, with 3G Speeds? Did anyone use it in any Country with 4G LTE Speeds?
3. I know this is really a very very strange question. But after unlocking the S GS3, will it be working on the AT&T LTE Netowrk in the USA? My thinking is, if it working in the LTE Network in the USA, then it will work in other countries as well, where LTE Network is going to be available in the future. Sorry, I know this is a bit weird.
If You can please refer and threads or links, it is fine with me. I'm also looking and not depending only on the answers that I get from this thread. But looking for replies/guidance/links though.
Thank You.
Click to expand...
Click to collapse
for Q1:yes you well be able to use any network... install any mod now most of them are already rooted and unlocked
for Q2:yes you can... all you need to ddo is to download a program called hiapn.. wipe the existing apn settings.. then auto detect and you are good to go 3g and hspa
Q3: yes it works thanks to the magic of hiapn software... but not many countrys use LTE .. usa canada japan and maybe few others

Verizon SGS3 on any GSM Carrier
Hi experts,
I have a small doubt here.
If the Verizon SGS3 can be used with any GSM Carrier around the world, then that means, the Verizon SGS3 can be used with AT&T or T-Mobile as well along with Verizon Network.
But the T-Mobile or AT&T Versions cannot be used on the Verizon's Network. Is that true?
I'm have got a traveling assignment coming up to Europe this Summer and I need to know what is the best possible solution out there before I leave.
Thank You.

Verizon's GS3 uses CDMA technology for the phone calling and data, as far as I know the SIM in the verizon version is only used for LTE.
From what I have read in forum posts, (this one in particular http://forum.xda-developers.com/showthread.php?t=2013647) if you pop in a SIM card, calling and texting should work. If you want data to work then you need to change some APNs around. Stock touchwiz does not allow this so you would need an app to do that. AOSP ROMs should have a way for you to edit APNs.
On the topic of getting 4G on any other network besides Verizon, that is fairly unlikely as they all use different technologies/ bands. Verizon has LTE, T-Mobile has HSPA+, not entirely sure what AT&T has but I think its also LTE.

This phone will take any SIM card cut to micro-size.
3G+ speeds depends on the frequency the carrier uses. The VZW GS3 uses the following radio frequencies after the JB update: GPRS/EDGE/GSM (850/900/1800/1900); HSPA/UMTS (2100) [I had to search high and low to find this for my trip to China]
Each LTE carrier uses different radio frequencies, and global countries also use LTE frequencies different than the US ones. 4G is a very varied standard at the moment.
If you want fast internet on a non VZW carrier, it better have HSPA+, otherwise you are on 3G at best.
Right now, the only truely global phone is the iPhone5 on VZW, which supports 5 different LTE frequencies. Sad but true.
The US based SG3's dont even have the FM radio that the international versions have

Edge
Mix3d said:
This phone will take any SIM card cut to micro-size.
3G+ speeds depends on the frequency the carrier uses. The VZW GS3 uses the following radio frequencies after the JB update: GPRS/EDGE/GSM (850/900/1800/1900); HSPA/UMTS (2100) [I had to search high and low to find this for my trip to China]
Each LTE carrier uses different radio frequencies, and global countries also use LTE frequencies different than the US ones. 4G is a very varied standard at the moment.
If you want fast internet on a non VZW carrier, it better have HSPA+, otherwise you are on 3G at best.
Right now, the only truely global phone is the iPhone5 on VZW, which supports 5 different LTE frequencies. Sad but true.
The US based SG3's dont even have the FM radio that the international versions have
Click to expand...
Click to collapse
Yeah, my girlfriend has a verizon s3 and with straight talk she is only on edge it never changes. It makes the phone nearly useless. Ive tried to talk her into letting me flash and unlock it but she isnt real interested in it. I dont even know forsure if unlocking the bootloader downgrading to 4.1.1 and using the att sim unlock method would work but I would assume that flashing it would allow you to at least get 3-4g. not?

T-Mobile variant questions

I currently have the Z3Compact and am considering getting the Z3 T-Mobile variant, as I'm a T-Mo prepaid customer. Just a few questions:
1) Can the Tmo variant Z3 be used on another carrier? Without unlocking the bootloader? I would like to root without unlocking the bootloader to still use all the Sony features (like with the Z3C). If I switch to another GSM carrier in a year, I'd like to still be able to use this device.
2) Is VoLTE up & working? Can it be used while rooted, locked bootloader? The same question with wifi calling.
3) Can the Tmobile ROM / Firmware be flashed on the International hardware and function exactly the same?
4) Will / can VoLTE / wifi calling come to the Z3C unlocked international variant?

1. Yes you can use it, BUT it only has 3 LTE bands and the 700Mhz (Band 12) LTE is not compatible with AT&T 700Mhz (Band 13). 700Mhz is important for indoor reception. Better to buy the regular Z3 as its a more global phone. Also if you still want the TMO variant you must use it on TMO for at least 40 days for them to unlock.
2. VoLTE works and rooting does not have anything to do with it so go ahead. WiFi calling is the same.
3. Don't do that as you may get no signal/baseband issues.
4. Don't know.
Extra: The T-Mobile variant has quality control issues and has been pulled from sale.... I am on my 8th Z3 after 7 exchanges. In addition TMO had to open a further 3-4 boxes on my third exchange to get a good one.
Just buy the international version..... They don't seem to be problematic like the TMO version and are LTE compatible with more networks.

abhinav.tella said:
1. Yes you can use it, BUT it only has 3 LTE bands and the 700Mhz (Band 12) LTE is not compatible with AT&T 700Mhz (Band 13). 700Mhz is important for indoor reception. Better to buy the regular Z3 as its a more global phone. Also if you still want the TMO variant you must use it on TMO for at least 40 days for them to unlock.
2. VoLTE works and rooting does not have anything to do with it so go ahead. WiFi calling is the same.
3. Don't do that as you may get no signal/baseband issues.
4. Don't know.
Extra: The T-Mobile variant has quality control issues and has been pulled from sale.... I am on my 8th Z3 after 7 exchanges. In addition TMO had to open a further 3-4 boxes on my third exchange to get a good one.
Just buy the international version..... They don't seem to be problematic like the TMO version and are LTE compatible with more networks.
Click to expand...
Click to collapse
1) If I only plan to use the phone in the US is it important that the international version is more 'global'? I'm kind of confused: Does the Tmobile version omit bands, or includes all the bands the int'l version plus band 12 / 700Mhz?

If you want to use it on AT&T the 700 Mhz band is not compatible. As you can see below the TMO variant is missing the 2 low bands needed by AT&T for better indoor reception. The global Z3 supports all the AT&T bands except T-Mobile's Band 12....
AT&T LTE Bands
17(700Mhz), Band 5(850Mhz), Band 2(1900Mhz), Band 4(1700/2100Mhz)
T-Mobile LTE Bands (TMO Z3 only supports these 3 bands)
Band 2(1900Mhz), Band 4(1700/2100Mhz), Band 12 (700Mhz)

abhinav.tella said:
If you want to use it on AT&T the 700 Mhz band is not compatible. As you can see below the TMO variant is missing the 2 low bands needed by AT&T for better indoor reception. The global Z3 supports all the bands except T-Mobile's Band 12....
AT&T LTE Bands
17(700Mhz), Band 5(850Mhz), Band 2(1900Mhz), Band 4(1700/2100Mhz)
T-Mobile LTE Bands
Band 2(1900Mhz), Band 4(1700/2100Mhz), Band 12 (700Mhz)
Click to expand...
Click to collapse
Thanks for clearing that up for me. I remember before buying my z3C hearing the info from GSMArena was inaccurate for one of the models.
I'm going to see if i can find more info on the quality control issues with the Tmo variant. I've owned Tmo branded versions of phones before and never had an issue.
I replace my phone every year to 18 months so if for some desperate reason I go to AT&T at least it will work in the meantime. I use Google Voice / Hangouts for calls so if I travel internationally I'd use wifi if the LTE reception isn't as good as on an international device for calls (won't use VoLTE), but since I'm in a Tmobile band 12 area I would like to use that.
Found this post on using the Tmo with AT&T: http://www.reddit.com/r/SonyXperia/comments/338q7q/help_with_tmobile_z3_on_att/

The issue is not with T-Mobile, its the variant Sony made for T-Mobile.... When a carrier itself stops selling a device due to problems you are taking a big risk. T-Mobile was good about exchanges though immediate replacements unlike Sony which can take up to 3 weeks. Remember if you want exchanges for any issues with TMO you must buy from TMO itself otherwise you deal with Sony. Considering TMO no longer sells this device TMO won't cover you..... As you will be buying from a third party.
So I strongly suggest you get the international Z3, unless you can buy the TMO variant from TMO itself so you can get replacements easily.
Whatever you decide I hope you enjoy, its a good phone, battery life and screen are amazing.

Thanks for your advice. I bought a Z3 off eBay for cheaper than I got my Z3Compact for a few weeks ago. I've never had to return or repair a smartphone so hopefully I stay lucky.

Well, I hope so too. Enjoy the device, its still the most well rounded device out there despite the release of the new gen phones.

abhinav.tella said:
Well, I hope so too. Enjoy the device, its still the most well rounded device out there despite the release of the new gen phones.
Click to expand...
Click to collapse
Yea, I noticed that when I bought my Z3C. The Z3 apparently outperforms the Z3+. My only concern is if I can truly get used to the larger form factor, as I'm passing along my Z3C to someone else as a birthday gift. If not, I'll just sell it and get another Z3C for myself .
I asked this in the D6616 rooting thread but haven't gotten a reply yet: Will I need to downgrade, then root, then flash a pre rooted TFT firmware to get stock rooted (similar process to rooting without unlocking bootloader on the Compact) or can I just use the instructions here regardless of the firmware I have on my Z3? I think Kingroot sounds too shady and wouldn't want to use it.

Three Network Versions

Hey everyone,
the new Zenfone 6 is amazing, besides the FlipCamera it has nearly everything (big battery, microSD, 3,5 mm headphone,...).
Just one thing irritates me: there are three Versions A, B and C, as one can see here under "Network Standard"
https://www.asus.com/Phone/ZenFone-6-ZS630KL/Tech-Specs/
So can someone tell me what that means? Like if I get the European version A (with Band 20), will I than for instance not be able to use it in the USA for telephone / SMS?! Or just not LTE / can I still use it like on UMTS? No LTE at all or just not certain carriers?
Hope someone can make it clear to me, thanks in advance

You'll be able to use it anywhere, it's just there's slightly less band coverage, so some networks in some countries would be nixed.
See Kimovil.com for network compatibility.
Gearbest currently have the 6GB / 64GB Version C (most bands) for €495.

It means you'll have to be sure to verify you get the version with the bands needed for your particular carrier. You have to be very careful and verify before buying as it seems with the ZenFone 5Z, for example, sellers don't always properly clarify which version they're selling.
You need to find out which of the main bands your phone carrier uses then match them up to one of the versions. I use AT&T prepaid, so for for example I need a phone with coverage for bands 2,4,5,8, and 17 if I recall correctly.
If some bands aren't covered you won't have LTE in that area, as not all areas you're in are using the same network frequency bands. Therefore coverage can get worse when you travel with a phone without full band support.

Checked out the bands available on the Asus site you linked (thank you very much BTW) and it seems they are missing bands 66(extension of band 4) & 71 (600mhz frequency) so it seems like it may work okay on TMobile.
What do you guys think if those two bands are missing? Will it be detrimental to daily use or not really? Currently on an OG Pixel and this Asus offering is looking like a future purchase!!

CDMA (Sprint or Verizon) compatiblity in the US?

Stanto said:
CDMA (Sprint or Verizon) compatiblity in the US?
Click to expand...
Click to collapse
Looks like the C variants might work for you but double check the bands for your carrier Kimovil.com.

mudnightoil said:
See Kimovil.com for network compatibility.
Gearbest currently have the 6GB / 64GB Version C (most bands) for €495.
Click to expand...
Click to collapse
Thanks for the hint.
I need Band 20 (O2 Germany), so I can only use Version A (so no B or C for me).
---edit---
I just checked: T-Online and Vodafone use Band 20 and 32 (in Germany), but none of the three versions support both.

MartyM76 said:
If some bands aren't covered you won't have LTE in that area, as not all areas you're in are using the same network frequency bands. Therefore coverage can get worse when you travel with a phone without full band support.
Click to expand...
Click to collapse
Ok, but does it mean I will at least have telephone and SMS in those areas, where the LTE band won't be supported?!

JJ111 said:
Ok, but does it mean I will at least have telephone and SMS in those areas, where the LTE band won't be supported?!
Click to expand...
Click to collapse
Yes, as long at the other bands are supported (which they should be) it will drop to 3G/4G or whatever. That's why people using some Chinese phones for example in the USA can use everything but LTE.
You might
need to check however about VoLTE, I think. I don't have T-Mobile but you should read more about that as I've seen it mentioned in XDA & other places.
---------- Post added at 12:56 PM ---------- Previous post was at 12:48 PM ----------
> Gearbest currently have the 6GB / 64GB Version C (most bands) for €495
I only see the A version there. Where did you find the C version?

This device just hit my radar... looks like we might have an upgrade winner!
For Tmobile US, C model is the way to go. The two highest bands that are missing with this device would get you better signal indoors / less interference, but I am not sure how far along that tech even is.

charlatan01 said:
The two highest bands that are missing with this device would get you better signal indoors / less interference, but I am not sure how far along that tech even is.
Click to expand...
Click to collapse
By highest bands do you mean 66 and 71? The only phones that use band 71 at the moment are Samsung s8 Active and LG V30. I currently have an OG Pixel and it does not use 66 or 71 and I get great coverage in the East coast even when going north into the mountains.

wreq5 said:
By highest bands do you mean 66 and 71? The only phones that use band 71 at the moment are Samsung s8 Active and LG V30. I currently have an OG Pixel and it does not use 66 or 71 and I get great coverage in the East coast even when going north into the mountains.
Click to expand...
Click to collapse
'
Yep, those are the two. Those two are still relatively new, and general Tmo coverage continues to improve here in Colorado.

I imagine that once the phone is sold on the asus.com website that particular variant will support all the main carriers LTE bands. I would be surprised if there were any major issues with that otherwise what's the point of even selling it in the USA?

SantinoInc said:
I imagine that once the phone is sold on the asus.com website that particular variant will support all the main carriers LTE bands.
Click to expand...
Click to collapse
Yes, for example in the case of the 5Z I just ordered (to get me by since I desperately need a phone with a better camera & no OLED to cause eye strain) the bands listed for phones at the Asus USA online store cover AT&T properly and to the best of my knowledge T-Mobile as well.
I figured out that they don't list phones there that aren't USA network compatible. I still check, regardless, just to feel 100% sure but that's what I found.
It's the 3rd party sellers you really need to be careful about and always verify.

The OnePlus 7 pro has bands 66 and 71.

This probably would have been my first choice until I noticed the different versions. With more and more manufacturers choosing to release single, global bands phones, I really don't understand why Asus insist on continuing to release regional versions of their phones.
Back in the days when everyone made regional models, I had the Padfone Infinity 2 and it was a great phone (until a late OTA release have it the new ZenUI, which was promptly removed). After reading that the latest ZenUI 6 has been slimmed down to an almost stock Android experience, I thought it might once again be similar to what Asus provided before ZenUI came along and that I can now once again consider Asus phones. Wrong!
I spend time in both Europe and Asia and there is no version that covers both areas major LTE bands. So Asus will have to remain on the list of phones to ignore.

Robbo.5000 said:
This probably would have been my first choice until I noticed the different versions. With more and more manufacturers choosing to release single, global bands phones, I really don't understand why Asus insist on continuing to release regional versions of their phones.
Back in the days when everyone made regional models, I had the Padfone Infinity 2 and it was a great phone (until a late OTA release have it the new ZenUI, which was promptly removed). After reading that the latest ZenUI 6 has been slimmed down to an almost stock Android experience, I thought it might once again be similar to what Asus provided before ZenUI came along and that I can now once again consider Asus phones. Wrong!
I spend time in both Europe and Asia and there is no version that covers both areas major LTE bands. So Asus will have to remain on the list of phones to ignore.
Click to expand...
Click to collapse
I'm in the same position. The C version covers everything I need except for Band 20 which is a necessity throughout Europe. The A version has Bamd 20 but won't work on US LTE. They did the same thing with the Zenfone 2 and inexplicably mixed up the bands regionally. I'll stick with my NexS for now but keep an eye on this phone in case the Limited edition they usually release solves the problem.

prestonmcafee said:
The OnePlus 7 pro has bands 66 and 71.
Click to expand...
Click to collapse
I don't want the OP7. This isn't the OP7 forum.

Does unlocking Verizon Z4 add band support?

I noticed my verizon z4 has a lot less band support especially on 4G comparing to unlocked version. This may be silly but I wonder if unlocking it through Verizon would somehow bring those band back as I travel internationally from time to time (probably should've avoided this version in the first place though).

wade.w said:
I wonder if unlocking it through Verizon would somehow bring those band back.
Click to expand...
Click to collapse
No it won't. Unlocking it only lets you use a different SIM card

I know this is an old thread, but I bought a Verizon Z4 and I'm using it on a provider that uses band 7 and 28 (band 28 doesn't appear as supported on a list I found online), and they both work (as SignalCheck says), so I don't know how accurate the "less bands" info is.

Question Usa carrier support

I've asked this question before and I can't find anything.
Can anybody confirm the 0/B/E versions to work on TMobile or att or mvnos of them?
If someone wants to be so kindid appreciate it. Really wanting to buy one for root.

if you use AT&T, don't buy any international models because they will block your sim. You may call them to unlock it but the sim will be blocked again after a couple days. The reason is AT&T has a list of supported models and international phones are not on their list.
T-Mobile doesn't have such a horrible thing. So yeah, it works.
Oh, and I am using 908E/DS on T-Mobile network.

bobimbap said:
if you use AT&T, don't buy any international models because they will block your sim. You may call them to unlock it but the sim will be blocked again after a couple days. The reason is AT&T has a list of supported models and international phones are not on their list.
T-Mobile doesn't have such a horrible thing. So yeah, it works.
Oh, and I am using 908E/DS on T-Mobile network.
Click to expand...
Click to collapse
So when I purchase my S22 Ultra. I can use it on T-Mobile no issues? I assume it can be unlocked rooted and install custom roms.

doubledragon5 said:
So when I purchase my S22 Ultra. I can use it on T-Mobile no issues? I assume it can be unlocked rooted and install custom roms.
Click to expand...
Click to collapse
That’s what I’ve done and been using till now. Bought the 908E on Amazon, unlocked the bootloader and rooted it. No custom rom for it yet other than tha Magisk rom by dr.ketan. I’ve always been an AT&T customer in so many years. They refused to work with me to make my phone work on their network so I switch to T-mobile.
I’m using the S22 Ultra 908E on T-mobile to write this right now. I don’t see any issue. If there is one, the phone is the issue.

bobimbap said:
That’s what I’ve done and been using till now. Bought the 908E on Amazon, unlocked the bootloader and rooted it. No custom rom for it yet other than tha Magisk rom by dr.ketan. I’ve always been an AT&T customer in so many years. They refused to work with me to make my phone work on their network so I switch to T-mobile.
I’m using the S22 Ultra 908E on T-mobile to write this right now. I don’t see any issue. If there is one, the phone is the issue.
Click to expand...
Click to collapse
Carrier aggregation and 5g all working well for you on t-mobile?

The missing of band 71 if using on TMO, is a big loss. I wouldn't bother.

dj24 said:
Carrier aggregation and 5g all working well for you on t-mobile?
Click to expand...
Click to collapse
No. I don't expect an international phone to be fully working on a US carrier network such as TMO or ATT due to missing bands. If I have to choose between slower connection and the ability to root, I'd choose the latter one. I chose TMO because it works, white ATT not working at all.
There are wifi networks available almost everywhere I go nowadays. In case there is none, usually when I was driving, 4G/LTE always available and that's good enough.

bobimbap said:
No. I don't expect an international phone to be fully working on a US carrier network such as TMO or ATT due to missing bands. If I have to choose between slower connection and the ability to root, I'd choose the latter one. I chose TMO because it works, white ATT not working at all.
There are wifi networks available almost everywhere I go nowadays. In case there is none, usually when I was driving, 4G/LTE always available and that's good enough.
Click to expand...
Click to collapse
So to confirm, no signal at all for att/cricket?
What about h20wireless? Redpocket mobile?
What site to use to check compatibility? I'll take slower speeds

To confirm:
1. AT&T blocks your sim right away. Your phone turns into a small tablet. That's it. Nothing you can do about it. I don't bother with smaller companies. I only go for the big boys.
2. T-Mobile will give you slower speed and freedom of root. This comes from my experience. Very little chance I need to use my plan's data. I can't tell the speed is slower at all. As far as carrier's features, I don't use any of them, but I think you can still have them if you change it to proper CSC.
Google search your model then you will find what bands your model support. Then Google search your choice of carrier to see what bands they have. Google is your friend.

Not just slower speed. Theres some areas that band 71 would be required to even get service at all in rural areas. Like just 5 min from my house if you have T-Mobile and your phone doesnt have band 71 no service.

hyelton said:
Not just slower speed. Theres some areas that band 71 would be required to even get service at all in rural areas. Like just 5 min from my house if you have T-Mobile and your phone doesnt have band 71 no service.
Click to expand...
Click to collapse
Will Samsung Galaxy S22 Ultra work in USA?
In this page we are going to show you the compatibility of Samsung Galaxy S22 Ultra with the mobile networks of USA and with the telephony operators that provide service in USA.
www.kimovil.com
This site is what I used and it looks like the version I want to get will suffice. But what do you think?

this.guy.lol said:
Will Samsung Galaxy S22 Ultra work in USA?
In this page we are going to show you the compatibility of Samsung Galaxy S22 Ultra with the mobile networks of USA and with the telephony operators that provide service in USA.
www.kimovil.com
This site is what I used and it looks like the version I want to get will suffice. But what do you think?
Click to expand...
Click to collapse
All depends on area. It's still missing band 71 and N71 5G. I personally couldn't as it would make my phone useless in areas I frequent

hyelton said:
All depends on area. It's still missing band 71 and N71 5G. I personally couldn't as it would make my phone useless in areas I frequent
Click to expand...
Click to collapse
But you could get the 4G LTE tho at least right? I have a 5G phone and i only get LTE speeds which is fine but the carrier doesn't offer 5G.

this.guy.lol said:
But you could get the 4G LTE tho at least right? I have a 5G phone and i only get LTE speeds which is fine but the carrier doesn't offer 5G.
Click to expand...
Click to collapse
No. Band 71 is an LTE band on TMobile.

hyelton said:
No. Band 71 is an LTE band on TMobile.
Click to expand...
Click to collapse
Ohh ok.

hyelton said:
Not just slower speed. Theres some areas that band 71 would be required to even get service at all in rural areas. Like just 5 min from my house if you have T-Mobile and your phone doesnt have band 71 no service.
Click to expand...
Click to collapse
In the end, as @hyelton just said, it all depends on your area, your luck and how you would use your phone... There is no definite answer to the op's question until he figures it out himself. It works for me and I am happy with what I got but that may not apply to everyone else... If the op decides to roll the dice for a chance to get a phone that he can have total freedom over it he can go for it. Otherwise, just buy the one on Samsung website ending with U models and have all of his worries put away. Honestly, I didn't think about any of that when I placed my order.

My unlocked 908U1 on t-mobile work perfectly, supported band25 with 130-180mbps speeds on LTE.
ps: 5G is totally disabled as it switching every 5 seconds between 4G\5G networks

malikin said:
My unlocked 908U1 on t-mobile work perfectly, supported band25 with 130-180mbps speeds on LTE.
ps: 5G is totally disabled as it switching every 5 seconds between 4G\5G networks
Click to expand...
Click to collapse
My OP was based on the international versions because I absolutely have to have root. I have not owned a phone that I could not have root capabilities in over 10 years.
I don't care so much about 5G I just want to have a phone that functions on a US carrier from overseas. Maybe it got lost in translation but I just want to know what carriers people have and if anybody has the carriers that I mentioned with confirmation or denial of service.
Specifically the carriers on most questioned about are H2O wireless and red pocket. I'm not very Google friendly and so I'm not familiar with the bands I'm used to just buying a phone and it working as intended for my purposes.

^^^ You're overthinking it. Just pull up the bandwidths for the carrier you're looking to utilize and go from there. As mentioned you're better served by going for one of the major carriers and maybe their prepaid services. Remember major carriers prioritize their post paid plans first for their optimum network traffic followed by their own respective prepaid plans and finally the MVNOs. I would stay away from the MVNOs in your scenario if you're importing a handset not configured for the U.S to begin it and degrading it further by using an MVNO.