iPhone signal disappear always to be no service in the buildings!
unfortunately my iphone 5s has his signal disappear especially in buildings
and i've changed my sim card and tried my sim card on another device
and it works fine
so the problem in my device but it seems its not a hardwere problem because
when i open airmode and turned it off again the signal come back
then goes again so if anyone has a solution to my problem
thanks for your cooperation
Questa è una buona domanda?