how to use back camera for video calling in j7 2015 - Samsung Galaxy J7 Questions & Answers

I have a rooted j7.
when making a video call with native mobile network i am not able to switch camera from front to back when i tap on switch it shows me a black screen. can anyone help me?
Thanks in advance.

What carrier?

Nisaki-Chan said:
What carrier?
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android:- version 7.0
samsung experience :-version 8.1
mode:-J30F

Thats not the carrier. thats android version and phone model

Nisaki-Chan said:
Thats not the carrier. thats android version and phone model
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Sorry my carrier is jio.

Whats your camera app? Is it preloaded or thrid-party?

Nisaki-Chan said:
Whats your camera app? Is it preloaded or thrid-party?
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preloaded

Related

FM radio app

What firmware do I need to stay on to get a working FM radio? (not streaming service). Does the U firmware support it? Or it's on the stock? Need this info before I settle for the s7
The t-mobile firmware supports it, I can't speak for the others.
I'm on the SM-G930U 6.0.1 and it does not have access to FM radio chip, so says NEXTRADIO
SM-G930T on 7.0 for me, and Netxradio works just fine with headphones.
darksabre_x said:
SM-G930T on 7.0 for me, and Netxradio works just fine with headphones.
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How did you get 7.0?
It's a beta. There's a few of us that got into it
grmcrkrs said:
I'm on the SM-G930U 6.0.1 and it does not have access to FM radio chip, so says NEXTRADIO
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Have u tried installing stock FM app to try?
jazzdglass said:
Have u tried installing stock FM app to try?
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Can you post a link to this app?
grmcrkrs said:
Can you post a link to this app?
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I do not have the S7 with me yet. You could ask one of the users to pull the APK for you.
This is one of those selling points that T-Mobile shoulda used. Reception is actually better than what I was getting on my HTC One M9 (shocker). Now if we could just root it. LOL!
Thanks for the head's up, all!

Roms for u.s galaxy s7

I'm a complete noob here so I'm sorry if I'm using the forum wrong. I appologize if I am. I've looked all over here and online and couldn't find anything but was wondering if there are any other custom roms for the snapdragon variant of the s7? Thank you all and sorry if I posted anything wrong.
check out the echoe rom its a very good rom http://www.echoerom.com/
That's what I'm currently on right now. Sorry I should have clarified other than the 2 that I've already seen on here.
sparky2029 said:
That's what I'm currently on right now. Sorry I should have clarified other than the 2 that I've already seen on here.
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Snapdragon doesn't have a unlocked bootloader so those are really the only roms there are
I figured as much. I wasn't completely sure though so I just thought I'd ask. Thank you though guys!
i m using this https://forum.xda-developers.com/ve...t/stang5litre-edition-5-0-s7e-rom-s7-t3453441
chetan180 said:
i m using this https://forum.xda-developers.com/ve...t/stang5litre-edition-5-0-s7e-rom-s7-t3453441
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On a T-Mobile s7?
I have G930T officiall firmware with root. Bootloader version 4A, can I install this rom in flashfire?
Sorry with my English, hello from Odessa!
sparky2029 said:
On a T-Mobile s7?
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I read a lil of it says it can be flashed with flash fire so I'm assuming it can be installed on g930t
TH3B0SS said:
I read a lil of it says it can be flashed with flash fire so I'm assuming it can be installed on g930t
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I was able to flash it with flashfire on my g930t but data didn't work because it's Verizon based. Only phone calls and texts worked and I couldn't figure out the apn settings to get data to work with the tmobile network.
sparky2029 said:
I was able to flash it with flashfire on my g930t but data didn't work because it's Verizon based. Only phone calls and texts worked and I couldn't figure out the apn settings to get data to work with the tmobile network.
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mobile data?
TH3B0SS said:
mobile data?
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Yea. I could call and text but couldn't use the Internet unless I had a WiFi signal.
sparky2029 said:
Yea. I could call and text but couldn't use the Internet unless I had a WiFi signal.
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Have you tried adding tmobiles apn settings
sparky2029 said:
Yea. I could call and text but couldn't use the Internet unless I had a WiFi signal.
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Here the apn settings I have I'm running 7.0 vzw beta on my s7 tmobile data,call,text works
TH3B0SS said:
Have you tried adding tmobiles apn settings
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I went to the network settings and clicked on search and tmobile came up and I pressed it and said it registered to the network but mobile data still didn't work. I'm not sure how else to do it though.
TH3B0SS said:
Here the apn settings I have I'm running 7.0 vzw beta on my s7 tmobile data,call,text works
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Awesome thank you, I really appreciate it. I didn't know I was supposed to change all that.
sparky2029 said:
Awesome thank you, I really appreciate it. I didn't know I was supposed to change all that.
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Oh lol I was about to tell u to go to access point name and add all that and ya np let me know how the rom works I might install it
TH3B0SS said:
Oh lol I was about to tell u to go to access point name and add all that and ya np let me know how the rom works I might install it
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Will do. I'll post and update when I re-flash it
sparky2029 said:
On a T-Mobile s7?
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Yeah using it works perfect
chetan180 said:
Yeah using it works perfect
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Sorry, S7 noob here; There is obviously a ton of info about this, but I'm not sure what's up to date!
Is this Android Marshmellow/Android 6? Are there are issues using this Verizon ROM (https://forum.xda-developers.com/ver...om-s7-t3453441) on the Tmobile SM-G930T phone? Wifi calling work?
Also, can anyone post summary of steps? I'm finding all kinds of info, but not sure what's up to date (eg root->flash this rom with ODIN->Update APN settings to tmobile...)
Thank you!

volte calling is not going aftr nougat update

After updating to nougat on bln-l22 volte calling on jio sim is not connecting no calls could be made wheras am able to use internet without any issue any folks out there facing same kindly help me out
Check with jio if nougat update is volte enabled from their side
honor6xak said:
After updating to nougat on bln-l22 volte calling on jio sim is not connecting no calls could be made wheras am able to use internet without any issue any folks out there facing same kindly help me out
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Try a factory reset.
Sent from my Honor 8 using XDA Labs
honor6xak said:
After updating to nougat on bln-l22 volte calling on jio sim is not connecting no calls could be made wheras am able to use internet without any issue any folks out there facing same kindly help me out
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try by installing jio 4G voice app
miststudent2011 said:
try by installing jio 4G voice app
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Ya it helped but another issue is app its always asking me to. Connected on 4g to place call or recieve call that's like when I connect the WiFi and tried to call its not getting through
honor6xak said:
Ya it helped but another issue is app its always asking me to. Connected on 4g to place call or recieve call that's like when I connect the WiFi and tried to call its not getting through
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Click to collapse
while using jio app you should always enable mobile data inorder to receive and make calls.
this is because currently your device has only LTE/4G support as per app detection but not Volte support.
miststudent2011 said:
while using jio app you should always enable mobile data inorder to receive and make calls.
this is because currently your device has only LTE/4G support as per app detection but not Volte support.
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I phone 6 works only with lte without app for 4g am using it technically band width are same so its not logical to conclude volte needed to function for the device
If lte is sufficient then it should work so did it functioned well when it was on emui 4
honor6xak said:
I phone 6 works only with lte without app for 4g am using it technically band width are same so its not logical to conclude volte needed to function for the device
If lte is sufficient then it should work so did it functioned well when it was on emui 4
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even you consider technically the functioning of IOS and Android are way different while handling applications.And both has different hardware.
In EMUI you might have Volte support but after update it might have locked Indian LTE band frequencies or app has compatability issues or try to reset apn settings and assign them manually.
By the way are you able to make calls after enabling mobile data?
did you install other region ROM?
honor6xak said:
I phone 6 works only with lte without app for 4g am using it technically band width are same so its not logical to conclude volte needed to function for the device
If lte is sufficient then it should work so did it functioned well when it was on emui 4
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Probably the emui 5 isn't volte compatible yet with volte
PalakMi said:
Probably the emui 5 isn't volte compatible yet with volte
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Wrong. EMUI 5 is VoLTE capable and compatible.
Sent from my Honor 8 using XDA Labs
I am also getting the same problem, but it is fixed for me now,
I just change the Sim.
flairfiroz said:
I am also getting the same problem, but it is fixed for me now,
I just change the Sim.
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You just bought a new one?
Sent from my Honor 8 using XDA Labs
flairfiroz said:
I am also getting the same problem, but it is fixed for me now,
I just change the Sim.
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Did you replace your JIO Sim?
miststudent2011 said:
Did you replace your JIO Sim?
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Replace?? No its same SIM
honor6xak said:
Replace?? No its same SIM
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Have you contacted their support?
Sent from my Honor 8 using XDA Labs
flairfiroz said:
I am also getting the same problem, but it is fixed for me now,
I just change the Sim.
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Click to collapse
honor6xak said:
Replace?? No its same SIM
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i was asking to flairfiroz , by the way did you install different region rom?
miststudent2011 said:
i was asking to flairfiroz , by the way did you install different region rom?
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Typo error I was asking replace ? Not the same sim?
adriansticoid said:
You just bought a new one?
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Changed SIM ++??
honor6xak said:
Changed SIM ++??
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Click to collapse
Sorry that question was for @flairfiroz.
Sent from my Honor 8 using XDA Labs
honor6xak said:
Typo error I was asking replace ? Not the same sim?
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Click to collapse
what is the build number do you have?
I doubt you installed different region ROM which dont have volte support.

Razer Phone Network Hidden Settings

Open dialer app
Dial *#*#4636#*#*
deadly0923 said:
Open dialer app
Dial *#*#4636#*#*
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This should work on every phone, except some Samsung phones because... Samsung
manor7777 said:
This should work on every phone, except some Samsung phones because... Samsung
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Samsung does it differently. Its a different number.
iliais347 said:
Samsung does it differently. Its a different number.
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I know, hence I mentioned it ? thanks though!
manor7777 said:
I know, hence I mentioned it ? thanks though!
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Lol
Which do I choose for AT&T US?
gonka95 said:
Which do I choose for AT&T US?
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My guess is UMTS/LTE

Hidden TMO Band service menu.

All the digging I have been doing working on the unlock I came accross this service menu.I have not seen it poasted anywhere yet online. I don't know if this can help yet in anyway to get sim unlock but it does let you unlock different LTE bands and many more. Try it out on stock rom. *#*#866#*#*
And it's not even a 5g model
hmmmmmmmmmmmmmmm very cool find!!!!!
Indeed.
Now, what can we unlock safely?
Sent from my OnePlus7Pro using XDA Labs
justencase6 said:
And it's not even a 5g model
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first off cant get into that menu and does it activate 5g?
chris_cautillo said:
first off cant get into that menu and does it activate 5g?
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There is no 5G radio in the device. The software for it, if there was a 5G radio, is built in to Android.
I cant get into the app with that code
it doesnt load anything
The code will only work on stock T-Mobile rom. And NO it will not activate 5g if there is no hardware.
Here more info I pulled
Here's the apk
how to install?
justencase6 said:
Here's the apk
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how to install?
chris_cautillo said:
how to install?
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Don't think it will work with any orther model. This is stock in the T-Mobile model.did you try unzipping and instilling the apk ?
justencase6 said:
Here's the apk
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justencase6 said:
Don't think it will work with any orther model. This is stock in the T-Mobile model.did you try unzipping and instilling the apk ?
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Yes i have tried to install it on a stock tmobile one
it says archive is invalid
chris_cautillo said:
Yes i have tried to install it on a stock tmobile one
it says archive is invalid
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U don't need to I stall on stock tmo . It's already there. Just need to *#*#866#*#* and this is one the OP7p
justencase6 said:
U don't need to I stall on stock tmo . It's already there. Just need to *#*#866#*#*
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That code doesn't work for me
chris_cautillo said:
That code doesn't work for me
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OP7p? And this is android 9. They may have removed in 10
justencase6 said:
OP7p?
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Yes 7pro tmobile verison
Android 9?
chris_cautillo said:
Yes 7pro tmobile verison
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Here's a full backup
justencase6 said:
Here's a full backup
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do i need root

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