SIM Failure, invalid SIM or no SIM card installed

SIM Failure, invalid SIM or no SIM card installed This is a factory unlocked Apple iPhone 4. It always shows the error "SIM Failure, invalid sim or no sim card installed."
Asked by: Guest \| Views: 239

Total answers/comments: 5

Comments display order:

Guest [Entry]

"Stephan Popov

Rep: 141

4

6

3"

Guest [Entry]

"I am sufyan sarwar and mere pas I phone 4 a332 hai plz help me

SIM Failure, invalid SIM or no SIM card installed"

Guest [Entry]

I also had the same problem, and I had to get a new iPhone 4.

Guest [Entry]

Well, there are some ways to try. You can try another SIM card. Turning the phone off and on. If it's a factory unlock, you can do a restore in iTunes, and you won't lose you factory unlock

Guest [Entry]

"when i insert all sim cards it says ""invalid sim card"".

please i need a help."