Guess the phone by its pictures -https://youtu.be/vDXeCsd1RKQ

After update all my data in internal storage is deleted or not

I have Samsung galaxy j7 max . I am facing internet problem in jio sim and other also at some time the speed goes to 50 kb I always get speed below 1mb never got good speedplease give any solutions of it

https://youtu.be/HC42wvUSBcshere link for video in which the method to adjust colour plz plz subscribe and like Samsung

https://youtu.be/MGSO9vEhBYchere the way to play old t.v. game in your smartphone specially for Samsung users All games like Super Mario ,Contra ,Bombermanplz plz subscribe my channel and like