hello youtube today i'm gone show you how fix wifi problem on samsung galaxy s4 don't turn on,
I know you lot with this problem,
and i'm here to help,
I had this problem and I've searched the net and forums and nothing any help me
but I realized an application is free and turn on the wifi !!
You will need to have internet but for this you will have to reset your factory because at first when setting up the phone your internet works
(can be connected to the network) does not work after you stop and again to start it ..