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What's the best unclocked GS6 to buy?

I have the AT&T version which is locked but I want to get an unlocked version of the GS6. Which one is the best to get? International? T-Mobile? I want the one that has the most support on the development side.

I think the G920F (s6Flat) or G925F (s6Edge) would be the best, because I've seen some kernels just for the international variant and no other. Plus, it's compatible with all if not, most roms. made for the S6. It' s (I think) the cheapest too. Although, I'm not too sure about network bands and compatibility with AT&T.

I have a g-925f, the edge unlocked. Works great on AT&T. Just keep in mind that you aren't going to get samsung pay on an international unlocked model. Learned that the hard way.

Jonny_Whitey said:
I have a g-925f, the edge unlocked. Works great on AT&T. Just keep in mind that you aren't going to get samsung pay on an international unlocked model. Learned that the hard way.
Click to expand...
Click to collapse
I don't care about Samsung pay. I will get the regular 920F since it's got the most support.

Capt said:
I don't care about Samsung pay. I will get the regular 920F since it's got the most support.
Click to expand...
Click to collapse
If I'm right, most G920F roms, kernels, and recovery's should work the the G925F. So both have equal support.

Or should I get the nexus 6p?

I bought the S6 from B and H Photo online store. The phone is carrier and region unlocked which means it will work anywhere in the world. It came with no bloat except ANT radio which I disabled. It's a G920i from Australia and came with Australian wall charger but I called the store and they sent me a US travel charger for free. B and H is good for customer satisfaction.

The Unlocked Galaxy S8+ on T-Mobile

Hello,
I am planning on purchasing the Galaxy S8+, but I think I'm going to get the unlocked version when it is released. My question is whether T-Mobile wifi calling would work or not on this version, and if it doesn't, then would it be possible to flash a T-Mobile rom on my phone without any problem? Would all T-Mobile features then work as if it was an official phone from T-Mobile? Also would there be any downsides in doing this? I know no one knows right now for sure, but I'm just asking based on the past and whether it has been done before with the galaxy s7.
Thank you!

enlildev said:
My question is whether T-Mobile wifi calling would work or not on this version, and if it doesn't, then would it be possible to flash a T-Mobile rom on my phone without any problem?
Click to expand...
Click to collapse
I don't believe wifi calling will work on the US unlocked version, but if Samsung manufactured the phone's the same as the S7, I.E. same hardware, then you should be able to flash T-Mobile's firmware with minor to no problems (I just flashed AT&T firmware onto a Sprint S7 and the longest part was downloading the firmware. I didn't gave any issues while flashing. But there's no way to tell we have that capability with the S8 until the phone has been released.
enlildev said:
Would all T-Mobile features then work as if it was an official phone from T-Mobile?
Click to expand...
Click to collapse
If you flash the T-Mobile firmware, yes. You should even receive updates from T-Mobile as well.
enlildev said:
Also would there be any downsides in doing this? I know no one knows right now for sure, but I'm just asking based on the past and whether it has been done before with the galaxy s7.
Click to expand...
Click to collapse
It's been done to the S7 countless times. Check out the forums and you'll see. I'd say the biggest downside is carrier bloat and certain carriers block some features that Samsung included in the phones.

Is it possible to flash T-Mobile firmware to Sprint Samsung Galaxy S8 (SM-G950U)?

Hi there,
I was wondering if anybody knows or had experience with flashing Sprint Samsung Galaxy S8 (SM-G950U) with other carrier firmware eg. T-Mobile or AT&T?
I have Sprint Samsung Galaxy S8 (SM-G950U) Unlocked, however I'm T-Mobile customer and would like to turn phone into T-Mobile phone. Currently phone works fine no problems at all, but I do have some features missing due to my phone is not T-Mobile. I don't have Wi-Fi calling and I cannot use hot-spot or tethering features that are available on T-Mobile phones. Perhaps there are some other features are missing that I'm not aware of.
PS. I had successful experience flashing T-Mobile firmware onto my GS7 Sprint some time ago, wondering if there is a way to do the same on GS8 Sprint. I've already tried to flash firmware from T-Mobile for GS8, odin would upload firmware to the phone however after restart during installation i'd get an error at 32% then phone restarts without any changes.
Would really appreciate any help or advice.
Thank you in advance
Green

nvm found this post and it helped
https://forum.xda-developers.com/galaxy-s8/how-to/switch-to-carrier-firmware-100-t3609487/page40

G955-FD in Canada question

My LTE doesn't seem to work properly or at all on my new S8+. My phone is not yet rooted and don't want to root until I figure out what issue I have. Judging from reading some forums, it seems it's my CSC but I can't make heads or tails about it, nor do I understand what the CSC is. I just get a headache reading about it lol.
I ordered the international version online (FD) and I'm with Virgin Mobile (Sister company to Bell Mobility) and it seems like my phone has crap service in places it should have undoubtedly full LTE+ speed.
I first noticed this with my S6 (G920-W8). When I rooted it and used the xtrestolite rom, it gave my phone model the international version (F) and never actually gave it a second thought until I upgraded. When I unrooted the S6 and put the stock rom back in, I gave the phone to the wife and I just recently noticed she has full LTE service where I previously overlooked. Now my S8+ has the prior issue the rooted S6 had. lol.
What is it about the international that makes the LTE not work properly and is there a way to correct this? And if possible, explained to me in dummy terms what the issue is and why? Thanks in advance

Reppy07 said:
My LTE doesn't seem to work properly or at all on my new S8+. My phone is not yet rooted and don't want to root until I figure out what issue I have. Judging from reading some forums, it seems it's my CSC but I can't make heads or tails about it, nor do I understand what the CSC is. I just get a headache reading about it lol.
I ordered the international version online (FD) and I'm with Virgin Mobile (Sister company to Bell Mobility) and it seems like my phone has crap service in places it should have undoubtedly full LTE+ speed.
I first noticed this with my S6 (G920-W8). When I rooted it and used the xtrestolite rom, it gave my phone model the international version (F) and never actually gave it a second thought until I upgraded. When I unrooted the S6 and put the stock rom back in, I gave the phone to the wife and I just recently noticed she has full LTE service where I previously overlooked. Now my S8+ has the prior issue the rooted S6 had. lol.
What is it about the international that makes the LTE not work properly and is there a way to correct this? And if possible, explained to me in dummy terms what the issue is and why? Thanks in advance
Click to expand...
Click to collapse
I have an s8 plus FD on rogers and it works 100% fine here in Toronto.
As did my note 7 FD as does my note FE as did my FD s7 edge
sent from my Note FE, S8 plus, S7 edge or S6

force70 said:
I have an s8 plus FD on rogers and it works 100% fine here in Toronto.
As did my note 7 FD as does my note FE as did my FD s7 edge
sent from my Note FE, S8 plus, S7 edge or S6
Click to expand...
Click to collapse
Yeah I'm in Alberta. I know at the bare minimum that it's software related but I just can't figure it out. Because like I said, as soon as I unrooted the S6, it had full LTE service in places it previously didn't. I'm assuming it's gotta be narrowed down to what the international uses. And I've heard mentions of "CSC" but that's a complicated concept for me.

force70 said:
I have an s8 plus FD on rogers and it works 100% fine here in Toronto.
As did my note 7 FD as does my note FE as did my FD s7 edge
sent from my Note FE, S8 plus, S7 edge or S6
Click to expand...
Click to collapse
Jesus christ. You bought a note FE too? You sure know how to waste your money [emoji23] [emoji23] Hope you are saving for retirement lol
Sent from my S8+Rooted

Brava27 said:
Jesus christ. You bought a note FE too? You sure know how to waste your money [emoji23] [emoji23] Hope you are saving for retirement lol
Sent from my S8+Rooted
Click to expand...
Click to collapse
Not a waste at all lol....had to have an FE.
Im not 100% sold on the note 8 yet though so I might not get it....might not lol.
sent from my Note FE, S8 plus, S7 edge or S6

Just updating..
Got a new SIM card installed and it seems to have helped. But I'll only know for sure when I'm back at work.
Do you know how I can change the 4G icon to say LTE instead? And I'm still curious about the CSC and if mine can be flashed with a Canadian one?

Reppy07 said:
Just updating..
Got a new SIM card installed and it seems to have helped. But I'll only know for sure when I'm back at work.
Do you know how I can change the 4G icon to say LTE instead? And I'm still curious about the CSC and if mine can be flashed with a Canadian one?
Click to expand...
Click to collapse
I dont think you can flash a CAN csc in odin but i think some of the custom roms allow csc choice on install.
My FD is from panama and displays LTE not 4g....
sent from my Note FE, S8 plus, or S6

Damn. I can't remember where my FD was from.
I successfully rooted it and not sure what I did but I got caught in the FAP lock and unable to boot and I'm trying to find the stock rom. Going through the list on sammobile, I'm sure mine ended with the QG5 but can't remember the country.
You think all of these would be the same so long as the PDA matches? Looking through the S8 box, I have the foreign manuals that say printed in vietnam. lol

Reppy07 said:
Damn. I can't remember where my FD was from.
I successfully rooted it and not sure what I did but I got caught in the FAP lock and unable to boot and I'm trying to find the stock rom. Going through the list on sammobile, I'm sure mine ended with the QG5 but can't remember the country.
You think all of these would be the same so long as the PDA matches? Looking through the S8 box, I have the foreign manuals that say printed in vietnam. lol
Click to expand...
Click to collapse
Doesnt make much diff...just pick an fd firmware and flash it lol....they will all flash in odin
sent from my Note FE, S8 plus, or S6

force70 said:
Doesnt make much diff...just pick an fd firmware and flash it lol....they will all flash in odin
sent from my Note FE, S8 plus, or S6
Click to expand...
Click to collapse
I figured lol.
Finally got my stuff sorted out, out of bootloop, installed the virgin csc, actually 100% fixed my reception issue.
But I'm hoping you can answer one final question. My phone is now rooted comfortably, got all my settings and apps back up which took forever considering I had to do it 3 times lol.
What's with the security log agent telling me
'Unauthorized actions have been detected... reboot to fix'.
I'm 100% that this is what locked me up last time in that FRP lock or whatever. Which is what forced me to reflash the stock rom. Do you know how to rid of this?
Is this completely normal after rooting the S8? Never had this before with my S5 or S6 so it's a little scary considering I don't want to get locked up again lol.

Reppy07 said:
I figured lol.
Finally got my stuff sorted out, out of bootloop, installed the virgin csc, actually 100% fixed my reception issue.
But I'm hoping you can answer one final question. My phone is now rooted comfortably, got all my settings and apps back up which took forever considering I had to do it 3 times lol.
What's with the security log agent telling me
'Unauthorized actions have been detected... reboot to fix'.
I'm 100% that this is what locked me up last time in that FRP lock or whatever. Which is what forced me to reflash the stock rom. Do you know how to rid of this?
Is this completely normal after rooting the S8? Never had this before with my S5 or S6 so it's a little scary considering I don't want to get locked up again lol.
Click to expand...
Click to collapse
This is how you can fix 'Unauthorized actions have been detected... reboot to fix' error:
https://www.youtube.com/watch?v=Zu8E6WuQmII

Reppy07 said:
I figured lol.
Finally got my stuff sorted out, out of bootloop, installed the virgin csc, actually 100% fixed my reception issue.
But I'm hoping you can answer one final question. My phone is now rooted comfortably, got all my settings and apps back up which took forever considering I had to do it 3 times lol.
What's with the security log agent telling me
'Unauthorized actions have been detected... reboot to fix'.
I'm 100% that this is what locked me up last time in that FRP lock or whatever. Which is what forced me to reflash the stock rom. Do you know how to rid of this?
Is this completely normal after rooting the S8? Never had this before with my S5 or S6 so it's a little scary considering I don't want to get locked up again lol.
Click to expand...
Click to collapse
Oh Yeah....thats an annoying massage.
Just freeze the securitylog apk with titanium BU or something and it will go away.
Frp lock is something different.

force70 said:
Oh Yeah....thats an annoying massage.
Just freeze the securitylog apk with titanium BU or something and it will go away.
Frp lock is something different.
Click to expand...
Click to collapse
Thanks man. Trial and error to get rid of that message honestly.
Any idea what's the frp lock from?
And just curious what do you think would happen if I let android security fix this unauthorized issue and reboot itself?

Reppy07 said:
Thanks man. Trial and error to get rid of that message honestly.
Any idea what's the frp lock from?
And just curious what do you think would happen if I let android security fix this unauthorized issue and reboot itself?
Click to expand...
Click to collapse
Frp lock is when you factory reset and didnt delete your google login and then forgot your password.
I cant say for sure about the security issue but i wouldn't do it with my device...nothing good can come out of that lol
sent from my Note FE, S8 plus, or S6

force70 said:
Frp lock is when you factory reset and didnt delete your google login and then forgot your password.
I cant say for sure about the security issue but i wouldn't do it with my device...nothing good can come out of that lol
sent from my Note FE, S8 plus, or S6
Click to expand...
Click to collapse
Thank you for all the replies my friend. Helped me out a lot. Cheers

Singapore S9+ VoLTE on T-Mobile USA

I'm sorry if this question is answered elsewhere but can someone please tell me if it's possible to enable VoLTE for T-Mobile USA on the exynos DUOS variant of the S9+ from Singapore? If root is required, can someone tell me what steps are required to get there? Currently I have 4G service as reported by speedtest but whenever I place a call all the data goes away.
Not a total noob but almost.
Thanks

Welcome to XDA! T-mobile US VoLTE is not yet working on the Exynos DUOS. We will need someone like TKKG1994 to work his magic like he did for international S8 version. The CSC for Tmobile is built for Snapdragon so it will need to be ported to Exynos variant. Most likely, you will have to root to get there when it becomes available. (Thanks to the awesome devs here...)

VICosPhi said:
Welcome to XDA! T-mobile US VoLTE is not yet working on the Exynos DUOS. We will need someone like TKKG1994 to work his magic like he did for international S8 version. The CSC for Tmobile is built for Snapdragon so it will need to be ported to Exynos variant. Most likely, you will have to root to get there when it becomes available. (Thanks to the awesome devs here...)
Click to expand...
Click to collapse
thanks for the info! do you know if att VolLTE would work in the US on this phone?

None of the US VoLTE would work until one of the devs figure out a way to integrate it. AT&T requires an AT&T phone to register for VoLTE so your best bet would be to get an AT&T phone. Someone had success on S8 Exynos by providing AT&T an IMEI from AT&T branded phone and then using the Exynos with "US CSC patch" someone had combined. Hit the thanks button if you find the post useful

VICosPhi said:
None of the US VoLTE would work until one of the devs figure out a way to integrate it. AT&T requires an AT&T phone to register for VoLTE so your best bet would be to get an AT&T phone. Someone had success on S8 Exynos by providing AT&T an IMEI from AT&T branded phone and then using the Exynos with "US CSC patch" someone had combined. Hit the thanks button if you find the post useful
Click to expand...
Click to collapse
I don't think that's entirely true. I have a Verizon Pixel 2 and I get VoLTE on AT&T.

Whanksta said:
I don't think that's entirely true. I have a Verizon Pixel 2 and I get VoLTE on AT&T.
Click to expand...
Click to collapse
I think having a US model will always get you a better chance of VoLTE vs international Exynos model. I do not use AT&T or Verizon so I am not entirely sure but read a few other posts in this matter.

I bought S9+ from Samsung in Singapore. Brought to US, 4G works fine on Tmobile.
At first, I can't get 4G to show up. Upgraded software, still 4G does not show up.
Then I asked someone to send me a text message and I made a quick phone call. 4G showed up after that. I think it needs a synchronization.

Do you have VoLTE though? When you make a phone call does it stay 4G or does it change to H+?

On the Exynos variants you will get 4G data but not at the true data speeds and noVoLTE as I have noticed with my Korean variant. If you have already rooted and got things going you can follow a thread by a fellow international user on XDA who was able to achieve on his Note8.
https://forum.xda-developers.com/galaxy-note-8/help/exynos-odin-flashing-fail-please-mistake-t3673231

newestmember said:
Do you have VoLTE though? When you make a phone call does it stay 4G or does it change to H+?
Click to expand...
Click to collapse
When I call, I notice it stays 4G. Web surfing also on 4G. I notice it is a bit faster than my older S6.
Note that Singapore S9+ only has 4 bars signal strength, not like US version which has 5 bars. So you might notice it is lower signal strength but the dBm is probably the same. I have no way of measuring so I don't know.

Just FYI everyone, TekHD has forged a CSC flashable that gives all carrier features from Tmobile on international Exynos model. !!!

Link please?

https://forum.xda-developers.com/ga...n8-s8x-s9x-oreo-usa-t-mobile-efs-csc-t3772385
I guess this is it. Looks very promising. Will probably try it out soon. But I hate to loose Samsung pay and secure folder...but then again. How many times do I really use that anyways?

Will going through this TWRP process trip KNOX? If so, is there any way to make Samsung Pay work again?

Sunnyschlecht said:
https://forum.xda-developers.com/ga...n8-s8x-s9x-oreo-usa-t-mobile-efs-csc-t3772385
I guess this is it. Looks very promising. Will probably try it out soon. But I hate to loose Samsung pay and secure folder...but then again. How many times do I really use that anyways?
Click to expand...
Click to collapse
I thought this is just a CSC flash, which doesn't trigger Knox

Whanksta said:
I thought this is just a CSC flash, which doesn't trigger Knox
Click to expand...
Click to collapse
You have to flash this zip with TWRP which I think needs root. I have been away from the scene since s7 edge but I'm pretty sure you need to root.
Gesendet von meinem SM-G965F mit Tapatalk

I also have a Singapore S9+ (XSP) 965F. Are you sure VoLTE works with Tmobile? That is awesome!

VICosPhi said:
Just FYI everyone, TekHD has forged a CSC flashable that gives all carrier features from Tmobile on international Exynos model. !!!
Click to expand...
Click to collapse
I assume this requires rooting though VIC?