Hello, XDA. I am currently considering purchasing a Galaxy S7 Edge (Exynos) unlocked for use on T-Mobile USA. I see that all the bands are supported here on the US, but I'm still worried about how well the phone works on T-Mobile. I recently heard that T-Mobile will block any devices without their own (T-Mo's) VoLTE certification from accessing LTE band 12 outright. Can anyone confirm if this is true? I would hate to purchase this phone and then find out I can't use it on band 12. I do not care for VoLTE/Wi-Fi calling, I am just worried about getting phone calls.
Also, overall, would anyone recommend this phone over the carrier version from T-Mobile USA? I have only gained interest in purchasing the Exynos version of the phone because I heard battery life and performance are much better. I really need a phone with good battery life and, from what I've heard, the Exynos version excels at this.
I would really appreciate if someone could clear this up for me. Thank you for your time.
Like the tittle says. I've owned a tmobile s7 edge for 7 months. Works greats till I intentially broke the screen with my Keychain(testing scratch) en pink line develop tmobile insurance is horrible couldn't get me a new phone. I've noticed the at&t s7 edge suffers from horrible battery life compared to tmobile s7 edge...has way more bloatware. And takes more time to charge while using phone on at&t. Not just my s7 edge. Whole family. I have 2 s7 edge on tmobile.
Sent from my SAMSUNG-SM-G935A using Tapatalk
I just switched from t-mobile to att and noticed the battery life being a major issue. Charging seems the same. The first one I got on Christmas eve lasted 10 days, updated all software to November update day one, crashed it after rooting 5 times in 10 days, then the touch screen went out in lower right hand side. Replaced it, didn't update software, rooted, no problems, other than shorter than normal battery life.
chernabog88008 said:
I just switched from t-mobile to att and noticed the battery life being a major issue. Charging seems the same. The first one I got on Christmas eve lasted 10 days, updated all software to November update day one, crashed it after rooting 5 times in 10 days, then the touch screen went out in lower right hand side. Replaced it, didn't update software, rooted, no problems, other than shorter than normal battery life.
Click to expand...
Click to collapse
The android system is taking 29% while android OS taking another 19% unplugged my phone last night and even put it on power save while I went to sleep. At 95% woke up with 90% throughout the day I am getting bad battery life. Quite disappointed
Sent from my SAMSUNG-SM-G935A using Tapatalk
Now I have an issue where phone goes into 3G and stays there. Won't go back to LTE or even 4G. Have 15 days. Today is 12th taking it back tomorrow. Sticking with tmobile. Good luck. You guys going to need it
Sent from my SAMSUNG-SM-G935A using Tapatalk
I am on ATT with ATT variant but flashed with Tmobile firmware. Faster data speeds, doesn't overheat and lag, more control in debloating, and no ATT crapware. So I get the coverage I need with ATT but better performance with Tmobile firmware on ATT's own network. On another post it was speculated that ATT must have some kind of limiter in its firmware that Tmobil's does not. Must be true because the results are repeatable. ATT was averaging around 27mb/6mb vs 60mb/20mb on Tmobile firmware. This despite Tmobile firmware not having a couple of the radio bands ATT network uses. Same place. Same phone. Same towers. Different firmwares.
nano303 said:
Now I have an issue where phone goes into 3G and stays there. Won't go back to LTE or even 4G. Have 15 days. Today is 12th taking it back tomorrow. Sticking with tmobile. Good luck. You guys going to need it
Sent from my SAMSUNG-SM-G935A using Tapatalk
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Click to collapse
drawn2magik said:
I am on ATT with ATT variant but flashed with Tmobile firmware. Faster data speeds, doesn't overheat and lag, more control in debloating, and no ATT crapware. So I get the coverage I need with ATT but better performance with Tmobile firmware on ATT's own network. On another post it was speculated that ATT must have some kind of limiter in its firmware that Tmobil's does not. Must be true because the results are repeatable. ATT was averaging around 27mb/6mb vs 60mb/20mb on Tmobile firmware. This despite Tmobile firmware not having a couple of the radio bands ATT network uses. Same place. Same phone. Same towers. Different firmwares.
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Click to collapse
Sounds great man glad it worked out for ya! Today I will be taking back my s7 edge to AT&T
Sent from my SAMSUNG-SM-G935A using Tapatalk
drawn2magik said:
I am on ATT with ATT variant but flashed with Tmobile firmware. Faster data speeds, doesn't overheat and lag, more control in debloating, and no ATT crapware. So I get the coverage I need with ATT but better performance with Tmobile firmware on ATT's own network. On another post it was speculated that ATT must have some kind of limiter in its firmware that Tmobil's does not. Must be true because the results are repeatable. ATT was averaging around 27mb/6mb vs 60mb/20mb on Tmobile firmware. This despite Tmobile firmware not having a couple of the radio bands ATT network uses. Same place. Same phone. Same towers. Different firmwares.
Click to expand...
Click to collapse
Can you let me know what you're using and how you did it for AT&T with the T-Mobile firmware? I've been at work off and on my phone and down to 35% after 6 hours of just on time.
Go to the following link to get the Tmobile firmware-
https://forum.xda-developers.com/tmobile-s7-edge/how-to/odin-apk1-tmobile-tmbg935ttmb4apk1-t3494724
If you get an SHA-256 error during flash with latest Odin, you will need the Princecomsy modified Odin to get past it. I got it from the following forum-
https://forum.xda-developers.com/att-galaxy-s7/how-to/root-s7-att-g930a-g935a-t3410538
Direct link to the modified Odin below-
http://d-h.st/gsDA
----------------------------------------------------------------
You will loose wifi calling and video calling. Everything else works. I then disabled some of the bloatware. Phone is awesome now.
*On a humorous note, my wife complains about it not being fair that on those occasions I play Pokemon Go with her and the kids, everything shows up first on my phone before theirs. I keep telling her that when she is ready I would change her firmware to T-mobile's as well. That is the difference between our phones and it is consistent. My GPS locks are faster than hers on ATT firmware as well.
nano303 said:
Like the tittle says. I've owned a tmobile s7 edge for 7 months. Works greats till I intentially broke the screen with my Keychain(testing scratch) en pink line develop tmobile insurance is horrible couldn't get me a new phone. I've noticed the at&t s7 edge suffers from horrible battery life compared to tmobile s7 edge...has way more bloatware. And takes more time to charge while using phone on at&t. Not just my s7 edge. Whole family. I have 2 s7 edge on tmobile.
Sent from my SAMSUNG-SM-G935A using Tapatalk
Click to expand...
Click to collapse
If you use T-Mobile why not just flash their firmware? You would have all the features. You would only use WiFi calling if you actually use AT&T service.
Sent from my SM-G935U using Tapatalk
Which root method you used
I was tempted to flash the unlocked fw, but I don't want to lose HD voice/enhance LTE Services. I might back up and flash it anyway to compare the two. I hate having disable over 90 apps and services on my g935a just to feel more comfortable using it.
---------- Post added at 06:16 PM ---------- Previous post was at 05:59 PM ----------
drawn2magik said:
Go to the following link to get the Tmobile firmware-
https://forum.xda-developers.com/tmobile-s7-edge/how-to/odin-apk1-tmobile-tmbg935ttmb4apk1-t3494724
If you get an SHA-256 error during flash with latest Odin, you will need the Princecomsy modified Odin to get past it. I got it from the following forum-
https://forum.xda-developers.com/att-galaxy-s7/how-to/root-s7-att-g930a-g935a-t3410538
Direct link to the modified Odin below-
http://d-h.st/gsDA
----------------------------------------------------------------
You will loose wifi calling and video calling. Everything else works. I then disabled some of the bloatware. Phone is awesome now.
*On a humorous note, my wife complains about it not being fair that on those occasions I play Pokemon Go with her and the kids, everything shows up first on my phone before theirs. I keep telling her that when she is ready I would change her firmware to T-mobile's as well. That is the difference between our phones and it is consistent. My GPS locks are faster than hers on ATT firmware as well.
Click to expand...
Click to collapse
I am curious and maybe I am mistaken, did you only flash the modem file?
qubanaso said:
Which root method you used
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Click to collapse
Root is NOT needed to install the stock T-Mobile or 935U firmwares
nate0 said:
I was tempted to flash the unlocked fw, but I don't want to lose HD voice/enhance LTE Services. I might back up and flash it anyway to compare the two. I hate having disable over 90 apps and services on my g935a just to feel more comfortable using it.
---------- Post added at 06:16 PM ---------- Previous post was at 05:59 PM ----------
I am curious and maybe I am mistaken, did you only flash the modem file?
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Click to collapse
I flashed the 4 files. AP, BL, CP, and CSC files.
Anyone know where I can get the att stock pk1 files can't unroot with out it
first android was Samsung galaxy s4 w/root. it died :crying: . want to root Samsung s7 at&t on stock rom. what is the better choice before I buy new device. 930a (American, snapdragon) or 930f (international, exidois)
If you're planning to root and install custom roms go with the 930f (international exynos). Rooting is wayyyy better not using the engineering boot and there are so many roms out there. The international is an all better phone all together with better performance and battery life. Only thing you're missing out by not buying AT&T is wifi calling and better data speeds I believe. I have the AT&T galaxy s7 and I wish I bought the international one for the rooting and roms. You can root the AT&T model, but it uses an engineering root that can make the phone slower and takes a heavy toll on battery life that is overall just crappy.
Greetings all,
I am wondering which method is the preferred method for rooting the Canadian (Snapdragon) variant of the Galaxy S8 (SM-950W). After searching and reaching around there seems to be two methods:
1) SamPWND as described in this thread
2) SamFAIL as described in this thread.
3) Another??
Does anyone have some advice here? Also, any fix for the 80% batter bug?
I'm also already carrier unlocked and using the phone on AT&T in the USA, if that makes a difference (perhaps worth flashing the ATT firmware?)
willjeffery said:
Greetings all,
I am wondering which method is the preferred method for rooting the Canadian (Snapdragon) variant of the Galaxy S8 (SM-950W). After searching and reaching around there seems to be two methods:
1) SamPWND as described in this thread
2) SamFAIL as described in this thread.
3) Another??
Does anyone have some advice here? Also, any fix for the 80% batter bug?
I'm also already carrier unlocked and using the phone on AT&T in the USA, if that makes a difference (perhaps worth flashing the ATT firmware?)
Click to expand...
Click to collapse
They both achieve the exact same result. There never will be a fix for 80% battery need an unlocked bootloader for that
moocman42 said:
They both achieve the exact same result. There never will be a fix for 80% battery need an unlocked bootloader for that
Click to expand...
Click to collapse
Thank you very much for your response.
I was indeed under the impression that there was no unlocked bootloader but then I saw this article saying that TWRP is available for Snapdragon S8s.... Doesn't that require an unlocked bootloader?
willjeffery said:
Thank you very much for your response.
I was indeed under the impression that there was no unlocked bootloader but then I saw this article saying that TWRP is available for Snapdragon S8s.... Doesn't that require an unlocked bootloader?
Click to expand...
Click to collapse
Those snapdragon variants are Chinese
i charged my rooted phone in the cold yesterday skiing using a battery bank and it stayed at 80 in the cold as expected and stopped charging, then when i warmed it up inside off the battery bank it rose to 93%. I'm going to try this again tomorrow in the cold. I wish I took screenshot since everyone said its stuck at 80 rooted which i've experienced. If it is anything like my gopro batteries, the lithium ion produces weak charge in the cold and the gopro thinks its more dead than it is, but when i warm them up on my body they increase in charge since the temperature is optimal ranges for it to produce charge and it at least has a bit of juice from dead to 30. Could be what happened with my phone? The phone measured the batteries output and thought it was at 80% but really it was only at that point because it was cold, then in reality if it were in optimal temps is actually more than 80
So these will work for the canadian 950w even though it says for the US version only?
The 950W seems to be a real pain.
Has a new solution been developped to allow the installation of a ROM on a 950W?
THanks
I bought my S7 Edge (Exynos) some time before Christmas for use in the short term. It was on 3 uk with previous owner but was stated as unlocked. I'm on talkmobile which runs off the Vodafone UK network.
I occasionally lose network on my phone and it loses the imei number too on occasion. I believe I have a baseband issue as I can only ever use lte band 20 and I thought that the phone would at least pick up a few more bands. I'm on the latest firmware R16NW.G935FXXS7ESL5
I'm wondering if I can change to roms that are more suited or sort the baseband. I'm happy to go to custom firmware if it's possible (unsure what I would lose in the process of leaving oem firmware?) I used to own a Sony and was competent with changing bootloader and firmware, obviously Samsung is somewhat different with locked bootloader on some devices so any pointers would be very welcome and gratefully received.
Phil