Why is my iPhone 5 not recognizing the SIM card?

[iMore Question]

i brought a iphone 5 of a friend they were on 02 i inserted a 02 sim card but it still says no sim its on the start up screen so cant even get to settings help someone

 

[Bigeric23]

Re: no sim even know one is installed

I would ask for my money back. Or you could take the phone to your carrier and have them try a new SIM.

 

[Just_Me_D]

If the SIM is not damaged and the SIM slot is also not damaged, eject the SIM card, reboot the iPhone and then reinsert the SIM card.