yashsingh1/xdaforums huggingface dataset:
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] Ricardo Cheing:
From what I hear, you are still going to need to use the eng kernel which to my knowledge is full of stability issues. The only reason I would root would be to get VoLTE and Wifi Calling working on the AT&T network. Other than this, nothing is compelling enough to make me deal with an unstable phone as a daily driver. However, I find that my phone without VoLTE and Wifi Calling is working fine and even better than before when I was on PK1.
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] savagesymbiote86:
I did also notice that taking pictures produces that shutter sound & on the ATT firmware you were able to turn that off
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] d1pham:
can
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] nhosey:
Has anyone else noticed a decline in battery life? I used to get 24-30 hours, but after switching to U firmware I'm only getting 16-18 hours.
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] maddytech:
Hello i am installing sm-g935u TMK firmware on my s7 edge at&T

I am using latest odin 12.3 ,its shows that blue sign after connecting to odin

I loaded all the files ..

*But when i pressed start option then it fails to download firmware to my mobile

**Currently i am on G935AUCS2APH1

and i am trying to install G935UUEU4AP13 VERSION
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] svfusion:
Can someone please tell me what "AT&T APK1" is?

thanks!
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] ytaida:
It's the AT&T latest firmware version, you'll find the info in the "about phone" in settings.
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] byte9:
Using the Odin I provided?
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] byte9:
Coming from A? Huh. Nope
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] smknutson:
No
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] vineet381:
I see OP got updated. Is it because of the new U Firmware or something else?
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] ytaida:
Awesome on My AT&T S7 Edge (935a)

This ROM is awesome! Never been rooted and running smooth. Here are a few things I love about this ROM.

Mobile Data On/Off Toggle (Love this instead of going through the settings/mobile network/mobile data to enable/disable data)

Camera Pics don't come out distorted like AT&T Stock ROM (No barrel or Pinch Cushion)

Great Battery Life

NO BLOAT(Hate AT&T Bloatware)

RAM Management

The calls weren't that clear and wouldn't get that many signal bars, but I flashed the T-Mo CP_G935TUVU4APK1_CL9507190_QB11413830_REV02_user_low_ship_MULTI_CERT.tar file via ODIN in the CP Selection Area and now calls are loud & clear, plus the LTE download speeds are blazing fast. I don't think I'm going back to AT&T Stock Firmware unless I need to return for warranty replacement.

I would like to thank Byte9 for providing us with this Amazing ROM. To all the developers and their families and those who share their knowledge with us on XDA for free, Thank you all, Merry Christmas, Happy New Year, and God Bless you all! Have a safe & wonderful holiday with family, friends, and loved ones.
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] stew1411:
Since people are flashing the T-mobile CSC, wouldn't it be better for AT&T users to flash the AT&T CSC?
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] Sword Fish:
I think people are flashing the CP file, not the CSC file.

Swordfish
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] maddytech:
No with odin 12.3 version I facing this problem..

should i tick repartition option or not what is significance of it..

is that why my firmware is failing to load..
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] byte9:
You think the TMobile modem changed normal GSM call quality on att? Hmm I'll look into and put in OP as an option if this is true. I haven't tested it.
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] ytaida:
I definitely noticed it right away as soon as I rebooted the phone. Made a few calls and sounds loud & clear, very satisfied with this 935U. Keeping as my daily driver.
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] maddytech:
hey i after flashing t mobile cp did you got volte support ...

i am missing that option on g935u firmware..

also android secret code *#*#4636#*#*

is not working why its not working

---------- Post added at 02:52 PM ---------- Previous post was at 02:44 PM ----------

hey i dont have that volte option ..

is it SM-G935U (tmobile ) firmware you are using now
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] ciaooo7:
CP file from T-mobile.

Good morning,

Can I get the link for the CP file from T-mobile.

Thank you
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] smknutson:
www.sammobile.com

All the fws are on there.
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] ytaida:
I'm on AT&T, no VOLTE and wifi calling on U firmware, but calls are loud & clear, LTE speeds are fast after flashing T-mo CP (APK1) file via odin. I'm happy the way the ROM is running without root. Using as my daily driver.
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] stew1411:
You will not get VoLTE on AT&T unless you root and edit the carrier file manually. T-Mobile has VoLTE and WiFi calling because T-Mobile allows it, so Samsung enabled it on U. AT&T doesn't allow those features on unlocked devices, therefore the only way to get VoLTE is to root.
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] byte9:
Nobody reads OP. I even spelled it out precisely.
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] stew1411:
I have no idea how many times I've stated this. In the old thread, as well.
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] maddytech:
hey can you give me link of this firmware

and details of this firmware

thanx in advance
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] stew1411:
You're already on the U firmware. What firmware are you looking for?
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] maddytech:
those images you have posted, in that model number is different and baseband version is different ..

and so can you tell me which u firmware you are using or just

if you can send me that link that will do huge help..

thanx in advance
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] stew1411:
I'm going to explain this in detail, because I'm not sure if you understand. There are 4 US carrier models of the S7 Edge. Each has their own model number. Then there is a 5th US model, an unlocked model G935U. Since all 5 models have identical hardware but different firmwares, you can flash a firmware from one to the other.

You have the AT&T model, G935A. However, you have the unlocked firmware, G935U, flashed on your phone. There is only one unlocked firmware. Since the firmware was for a different device than the one you have, the model numbers and basebands are not going to match.

T-mobile allows VoLTE and WiFi calling on unlocked firmwares, so Samsung has it enabled for the U firmware. AT&T doesn't allow unlocked phones to have those features, so Samsung did not enable them. The reason you see T-mobile users talking about those features is because of this. That's why they can see the settings and you can't, the phone hides those settings as we can't use them. So this one firmware knows which carriers can use certain features and which ones can't, and enables or disables them accordingly.

There is no separate T-mobile unlocked firmware or AT&T unlocked firmware. Look at it like an iPhone. Apple only makes one version of iOS that everyone on different carriers use. Apple has each individual carriers features on the one firmware, and depending on which SIM card you use, turns them on or off. That's why you can take an iPhone from one carrier to the other and use the features of the current carrier providing service.

I really hope this helps, because there is no firmware that you can flash that will give you these features you want, besides the AT&T firmware. If these features are a deal breaker for you, I suggest going back to stock. There is a second option, which is rooting your phone, opening the file that has all the carrier features enabled or disabled, then manually enabling it yourself. However, I don't recommend it. For me, root was too unstable, my phone got too hot, and battery life suffered due to it. Until a more stable, daily driver root solution can be found, I suggest not doing it. But it is your choice.
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] faslane:
yep!

works perfectly. not rooted. waaaaaay too buggy for me to care about.
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] faslane:
I posted the link weeks ago but no longer am hosting it. my Dropbox got too many hits so I had to pull it but I found it in the tmobile U thread so it's still out here.
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] isunga:
I had trouble flashing the files going directly to download mode (home + power + volume down). It got stuck on SetupConnection.

I had to go into recovery (home + power + volume up) and then select bootloader, this will go to download mode without any text at top left.

Files were able to flash without any problems.

By the way, before I had my 935a I had a 930t, T-Mobile has more options than AT&T's. I was very happy to see 935u has those from T-Mobile's.

Thank you very much for sharing this.
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] faslane:
Perfectly said. I only have VOLTE and wifi calling on U because Tmobile already has offered these services on all their devices locked or unlocked so the U firmware doesnt take that away since my phone already is capable and supports it by the network.it didnt magically unlock my phone or anything (which I dont need anyway and not many do unless their device is paid off and then they can have their carrier unlock it anyways so the only reason you'd want it unlocked before you've fulfilled your contract is for not having to roam when in another country and racking up substantial charges after your roaming allotment. I get 50GB roaming and anything after I get charged for but I've never needed it because I can always get a tmobile signal or just use wifi for data and calling (and at the same time because thats what volte makes capable. Without volte you couldnt talk and be online on your phone at the same time like Sprint used to be....Im not sure if any carriers are still like that or not. +1 well explained.

Fas
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] byte9:
What was it? I can host it. If it's needed.
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] Vukadmos:
Thanks [MENTION=4903942]byte9[/MENTION], everything working as expected so far.

I believe [MENTION=1264662]faslane[/MENTION] was referring to the PK1 modem, which is linked to in the T-Mobile U thread here (under the CP header): https://xdaforums.com/tmobile-s7-edge/how-to/firmware-g935uueu4api3-odin-files-t3509819
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] hatgirl223:
Thanks to byte9 and the information in this thread. I have installed the "U" software and it is working fine. The speed on LTE was not all that great based on speedtests so I flashed the TMO modem and it doubled the speed when i ran tests. I haven't tested call clarity but i am extremely happy with the phone and how it reacts now.
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] smknutson:
do you originally have the att model?
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] faslane:
Correct. Im on tmobile. Sorry guys on the road and dont have the files with me. Your modem will be different than your baseband. See my pic I attached. I am a Tmobile customer and this works perfect. Been running it at least a month zero issues. Notice the PI3 AND PK1 .....thats correct for tmobile. The PK1 is the newer modem file thats supports the huge speed increase in lte

Mimo.....
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] faslane:
Correct. Youll love it. I used to get anywhere from 7_15Mbps....slooooooowww

Now I easily get at LEAST 30-40 Mbps and if outside 60-90Mbps LTE. its a Huge difference. Sometimes faster than my wifi lol
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] byte9:
Are you on at&t or tmo network?
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] faslane:
Right above this post youll see I stated Im a Tmobile customer. ;)
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] byte9:
I saw. But I wasn't sure on context if 'im on tmobile' maybe meant you were on the modem or carrier.
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] faslane:
Oh gotcha. I Suppose but yep im a Tmobile customer. I wish this didnt come with Facebook loaded on it anyone know of a way to uninstall it? I can force stop then disable it but FB is a huge battery hog.....blech!! Lol (not rooted by the way) the root was waaaay too buggy and laggy even after applying all the supposed fixes but it was still bad so I factory reset and reflash-ed and didnt root. It runs so much better unrooted...night and day difference.

---------- Post added at 09:02 PM ---------- Previous post was at 08:53 PM ----------

Does the modem file wirk on non -Tmi ile too? I would know since an actual custoner so thats why I didnt specifically say I was a customer. I thought you had to be lol
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] byte9:
It will at least work. I've had a few people say it did better but I haven't tested it, find that is likely placebo. I don't know if any bands are blocked. I see no reason why it would help att customers but there have been a few anecdotal things. I think unlikely it helps, but it'll certainly work. Likely missing some bands. But it'll connect just fine.
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] faslane:
Ahh awesome. I think I remember a tmobile oerson asking about a band 12 if not mistaken because it was the fastest one and I ran tye #number sequence and it did suppirt that band on T-Mobile so that was definitely a plus for me. Im pretty sure it was band 12. Its been a month but this modem on T-Mobile definitely flies!!!! Much faster than any to date by far because it supports T-Mobiles 4x4 MIMO new support that supposedly by the end if the year and end of January their whole network will support supposedly. It definitely dies in my device....huge bump in LTE speeds.....
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] hatgirl223:
Yes, I have an unlocked ATT S7 edge.

---------- Post added at 02:22 AM ---------- Previous post was at 02:20 AM ----------

I am on ATT network and phone calls are

clear.
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] peacemaker885:
Thanks in advanced, but will this process work with a mac using Jordin?
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] stew1411:
I don't think so. I'm pretty sure you have to use Odin.
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] faslane:
"T-mobile allows VoLTE and WiFi calling on unlocked firmwares"

It doesn't have to be unlocked though (not on Tmobile at least)..... I had VOLTE and wifi calling before the U firmware on Tmobile since day 1 a couple years ago when it first came out ....just and FYI but very well said otherwise and great explanation.

Fas
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] kishore2908:
I have a G935U the unlocked version from Samsung. I am with AT&T.

I have a very poor AT&T reception at home and due to this most incoming calls go straight to my voicemail.

Can i flash the G935A firmware to use WiFi calling. Any suggestions or links?
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] stew1411:
I would assume you could flash the AT&T firmware. We flash from A to U, I don't see why it wouldn't work the other way around.
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] byte9:
You should be able. It's in the AT&T thread. Just find the version w boot loader v4, it's not the newest but it will OTA update on install to newest.
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] shubhamgohil17:
I need to restore to stock ATT firmware aswell, I downloaded the appropriate firmware from another thread, which is on bl4, but i cannot flash it via odin, it gets stuck at "file analysis" any suggestions?
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] Quickvic30:
This happened to me also, VERY annoying! I tried EVERY version of odin from every thread in in the ATT edge section, nothing would work. So after 2 days of banging my head I finally tried something different, instead of getting into download mode using the phone key combination I actually went into recovery (wiped cache partition twice) and then selected boot to bootloader option (which is DL mode) and it FINALLY worked. Not sure if it was a fluke or what but it worked. I also found success once using odin version 3.11.2 entering DL mode through recovery that time also. Really weird stuff, I've never had a issue with odin like this before and I've used odin hundreds of times with many devices, thanks AT&T for being a PITA!
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] pupochek:
You might be better off with TMobile modem, AT&T people complain about AT&T modem a lot, but swear that everything works better with TMobile one,go figure...
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] Ricardo Cheing:
I have the T-Mo PK1 modem on my G935A with this PI3 firmware. Reception and LTE speeds are not any different than with the PI3 modem. Only reason I kept it is because since it's not hurting anything, I figured PK1 is newer than PI3 anyway...at least judging by the other PI1, PI2, then PK1, etc... official firmwares from AT&T and T-Mo.
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] peacemaker885:
TMo CP on ATT

Guys, about to convert to U - just need a final answer - can I use and is it advisable to use the TMo CP file on an ATT phone?

This file - https://xdaforums.com/tmobile-s7-edge/how-to/firmware-g935uueu4api3-odin-files-t3509819

Thank you so much and looking forward.
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] evilvoice:
Yes
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] peacemaker885:
Thank you sir. I just want to convey my thanks to the OP and to all members who try to help new members like myself.
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] peacemaker885:
I thought it was going to be harder. Works like a charm :)
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] peacemaker885:
Everything now works and I can enable WIFI tethering, but for some reason the client device attempts to connect but, disconnects promptly. I have one of those super old unlimited plans. Thank in advanced for any pointers.
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] Desert.pro.riders:
So when i go to unzip the firmware zip windows gives me an error and says i cant unzip because i dont have enough space. it shows that the size of the AP file is 734PB. Any ideas?
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] peacemaker885:
My mistake. All working!
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] cstayton:
CSC

Just an FYI, (I haven't done so on this firmware yet) on other unlocked firmware you are able to flash the AT&T CSC file as long as you use the pricecomy odin this will give you an approximation of an AT&T device without their bloatware and enable wifi calling and volte however, it does factory reset your device so you will have to either backup and restore or reconfigure your device.

P.S. the 935U firmware runs flawlessly thanks for posting.
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] smknutson:
So flash latest 935U, and immediately afterwards, flash latest 935A CSC?
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] stew1411:
That's what he saying. Not sure if it'll work. You're more than welcome to try and report back with your findings.
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] cstayton:
yes, that is correct but remember i have not tried on this device yet so try at your own risk
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] byte9:
I have old unlimited too, world fine for me. Try more than one client device?
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] kobayashi_maru:
I encountered the same thing. The zip archive doesn't seem to agree with Windows. Use Winzip or some other tool instead. I think I used Winrar.
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] chuchobeer:
s7 edge AT&T

It worked !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Thank you very much >

i was frustrated cause before i was getting the sha error but this time worked

thank you very much>
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] hetalbpatel:
Which AT&T CSC file should I use? A link would be appreciated. Thanks in advance.

---------- Post added at 12:37 AM ---------- Previous post was at 12:31 AM ----------

Sorry, meant to ask for a link to the ATT CSC file that I can use with this U firmware to be able to use Wi-Fi calling.
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] Jbluedodge:
Was there a link yet?
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] stew1411:
Not just for the CSC. You would have to download the entire AT&T firmware and just pull the CSC from it.
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] Jbluedodge:
I thought someone on here may have already pulled the CSC
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] jwzg:
Question: I've been on the U firmware since Nov. and have received no security updates past the September patch. Am I missing something?
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] byte9:
You have root? You can only load into system with root, the only way to get volte on At&t
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] byte9:
Nope. Samsung isn't supporting it with any good frequency. I'm still supporting the thread but I gave up on the U, on A for wifi calling and volte. It sold abysmal. Maybe if we get a good root it will be a good bedrock in the future. It will eventually get nougat, but they've demonstrated monthly support isn't there for it.
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] Jbluedodge:
So 7.0 has started rolling out. I hope someone can their hands on a U firmware that we can use ?
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] byte9:
You will get 7.0 OTA if you're on U. No need for anything.
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] Jbluedodge:
Just won't have wifi calling or VoLTE?
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] byte9:
Please read the OP. The 935u is a carrier agnostic device. I put the link to Samsung's profile page on it also if you're curious. The simple version is it will behave differently on each carrier depending how said carrier provisions. AT&T doesnt support unofficial hardware and THAT is why it doesnt have it. It has nothing to do with the firmware, everything to do with the carrier.
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] Ricardo Cheing:
How about battery on the A? I'd like to go back as well for VoLTE and Wifi Calling but the battery sucked. Also, how did you debloat?

Thanks in advance.
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] Jbluedodge:
So did flashing the CSC through Odin work?
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] stew1411:
I don't think he ever got back to us. IIRC, in the old U thread, people were trying to flash the AT&T CSC, resulting in a boot loop. You're more than welcome to try, but have the U CSC on hand in case you need to flash it. You won't need to flash the entire U firmware, just the CSC. But remember, flashing a new CSC will result in a factory reset.

---------- Post added at 08:08 PM ---------- Previous post was at 07:44 PM ----------

Also, use the modified Odin. From what the guy said a few pages back about U accepting the CSC, it needed to be done with this Odin.
[AT&T Samsung Galaxy S7 Edge Guides, News, & Discus] byte9:
NO. A CSC will not do it. It's a file called others.xml in the /system partition. This firmware without root does not support volte or wifi calling on AT&T via ANY method other than root modification of the others.xml pulled from a stock 935a. Full stop those are the facts, you can read a lot more through other threads but brass tac facts. That's is it.