I have iphone 4s and 5. Suddenly I cannot make or receive calls with iphone 4s from inside of my house. ( iphone 5 is working very well and no problem.)
I tried resetting network, turn on and off, update software to IOS 7.1.2, *228, and restore.. nothing is working.
Funny thing is if I go outside of my house, my phone is working..
Does any body has same issue?