My iPhone7 started with "NO SERVICE" problem, I fix it by restore system but a week later the problems appears again. Then I do a fabric reset but now I can't activate my Iphone because it can't read data from SIM.
My SIM works good in an old model (iPhone4). When I try activation by iTunes, there is only a white screen with the word iPhone and no activation buttom or something.
How can I activate my phone to restore my old backup?
PS. I can't take it to Apple because there is no Sellers on my country.