Galaxy s7 edge g935A at&t HELP! - AT&T Samsung Galaxy S7 Edge Questions & Answers

Hi guys,
I have bought this at&t galaxy s7 edge from China (it's an refurbished phone), It work well but, after a few days I decided to flash a 7.0 android firmware with odin..
after that, I saw a lot of problems, like the mobile data toggle disappeared.
so I decided to downgrade to 6.0.1 and I had the same problem, I haven't the mobile data toggle..
and in the mobile network menĂ¹ , I haven't the "network mode" so I can't switch from only 4g lte to 3g for example, how is it possible ?
a friend has bought the same refurbished phone like mine, he don't upgraded it and he has the mobile data toggle and network mode.
how can chineses put the data toggle in an at&t phone without root and void Knox?
is it possible to do by myself?
I need this data toggle in rapid menĂ¹

Related

S5 SMG900F LTE issues

Hi guys
I'm new here and kinda stuck with this annoying problem.
I bought an S5 SM-G900F from Dubai (UAE) last year and it worked fine there- used LTE services and all. However, I recently came back to Pakistan where a network called ZONG launched LTE services a few months ago. Thing is... I don't get the option to select LTE in network mode. It just isn't there.
All I can see is:
WCDMA/GSM (auto connect)
WCDMA only
GSM only
I'm on stock ROM, btw
G900FXXU1ANG2
Android Kitkat 4.4.2
Someone I know purchased a SM-G900D from Dubai which is a dual SIM S5 and he gets another option: LTE/WCDMA/GMS (auto connect)
So I'm in a fix and I desperately need to get my LTE working. I called the UAE Samsung helpline and they said that apparently LTE only works in the country you purchased the phone from, which I thought was just silly.
I don't want to root my phone- the camera module has been changed once under warranty and I don't want to risk anything. Also, I did try to access the Service mode of the pone but all the settings just bamboozled me. Fiddled with quite a few, but still could not manage to get the LTE option
Any help?
Thanks
Farhan

[Q] verzion galaxy s5 in the uk 4g problems

Hello, I'm new to all this (iPhone convert)
I have recently got my hands on a beautiful galaxy s5, I believe it is a verzion 4g LTE, now the problem is, I am currently based in the UK on the network three (who supports unlimited 3g/4g)
I have set up my phone to work from the network but I am only currently receiving "H & H+"
I believe this isn't 4g?
I have tried to troubleshoot from basic settings and have tried the "advanced signal strength" fix, still no luck unfortunately.
Is there any possible way I can load a custom ROM to make the phone think it isn't verzion or anything along them lines?
Thanks in advanced.
From what I've read, it sounds like you might need to change the CSC to a UK (Three) CSC
http://forums.androidcentral.com/sa...5-guide-how-change-csc-samsung-galaxy-s5.html
EDIT - And yes, it will say 4G once you are connected to 4G

Alert! S7 Edge SM-G935A Andriod 7 Nougat update data not working non att/ nonatt mnvo

Hi ,
I have a unlokced at&t s7 galaxy edge and I was using it till yesterday on Tmobile network
every thing was working fine till this andriod 7/ Nougat update came in.
As everybody else I was very excited and let the phone go thru the udpate, everything went fine and I got andriod 7.
However after the update for some reason only mobile data ( I can make/receive calls) is not working on Tmobile network.
Thing I did as a intial troubleshoot
1. put the SIM into another phone to check there is no problem with the SIM/network outage. We found that there is no problem with sim/account and data/voice everything works exactly as it is supposed to work with another phone
2. I rechecked all the settings/apn/data/ etc many times on unlocked galaxy s7 edge phone but data is not working. I still see 4g/4g lte icon but I dont get the data. we tried manual search/resetting of network as well
4. I have put the H20 sim ( att MVNO) on same unlocked galaxy s7 edge phone and voila data works fine.
can you please help me, advise what are my options now ?
If you're using an AT&T device on the Tmo network and fail to send/receive data, have tested and confirmed the issue isn't hardware or software related by using an AT&T sim...I'd pose this question on the Tmo S7e forum. I myself am polar opposite; AT&T device running Tmo ROM with AT&T apn settings (obviously). Worked fine on MM, and still works great after N update.

wifi calling and Volte for unlocked galaxy s8

I recently brought Galaxy S8 SM-G950F (international unlocked) version and use Ultra mobile which in turn uses T-Mobile network in US. I have following queries:
1. Currently Wifi calling is not working nor can I see any options to enable/disable it. Does international unlocked phone do not have this feature? I tried the call setting menu and more connection settings but it does not appear in both of them.
2. After the call connects, my data switches to H or H+ (3G) but otherwise it remains on LTE/LTE+. Is this an issue with my phone or the carrier? My friend uses the same ultra mobile network with IPhone 6s and LTE works while on call so I think its not a carrier issue but not sure. I have heard LTE works on carrier provided galaxy s8 models.
I also have any option to exchange my phone for North America unlocked version S8 SM-G950U. Does this model supports above features? Should I go for this exchange?
ariesb2b said:
I recently brought Galaxy S8 SM-G950F (international unlocked) version and use Ultra mobile which in turn uses T-Mobile network in US. I have following queries:
1. Currently Wifi calling is not working nor can I see any options to enable/disable it. Does international unlocked phone do not have this feature? I tried the call setting menu and more connection settings but it does not appear in both of them.
2. After the call connects, my data switches to H or H+ (3G) but otherwise it remains on LTE/LTE+. Is this an issue with my phone or the carrier? My friend uses the same ultra mobile network with IPhone 6s and LTE works while on call so I think its not a carrier issue but not sure. I have heard LTE works on carrier provided galaxy s8 models.
I also have any option to exchange my phone for North America unlocked version S8 SM-G950U. Does this model supports above features? Should I go for this exchange?
Click to expand...
Click to collapse
You will not get wifi calling or volte on any of the unlocked phones while they are stock. Each carrier is slightly different on what u need to do. Tmobile only need a firmware flash with a carrier that has the option. Att is the hardest, many more steps.

S7 edge SM-935u obsolete ATT/Cricket Feb22?

Ok phone ninjas. I got the notification from cricket today that my SM-935u will not work once 3g is turned off. I found the compatibility list HERE. Note that all the "u" phones after are updateable and should work. And all the att branded phones back to the s4 are compatiable. So, does the hardware exist in the unlocked s7 Edge SM-935u and is there a way to make it work once the 3g network is shutdown? I guess what I'm reading is that post 3g shutdown phones must support VoLTE. The older phones drop to 3g for voice calls. Will texting still work if voice doesn't.
So the questions, can via a software update, booloader unlock, custom rom (such as to the SM-935a firmware), make this phone continue to work? Oh, and if you can provide a step by step guide or link to one that would be great.
Or is this phone just a paperweight in 5 months if on cricket or att?

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