iPhone doesn't see SIM card


macrumors 604
Original poster
Mar 8, 2005
Washington D.C
So I went to a leadership training program recently, and put my SIM card(the one that came with my iPhone) into my BlackJack(from AT&T) and took that cell phone.

I came pack, and popped my SIM card back into my iPhone. Everything worked fine, until today(about 1.5 days after I came back).....I looked at my iPhone, and it said "no SIM Card"...I held down the top, and "menu back" button, and it restarted, and I had service. Started listening to some music, and everything was great.

Then after about two songs, I looked at my iPhone, and again it said "No SIM card"....I tried to reset it, and nothing. Still says I have no SIM card

Should I just go to Apple, and get it replaced, and is anyone else having this problem?


macrumors regular
Jan 10, 2006
we had that problem with one of our iphones when we first got it. apparently there were some issues with sim cards not being properly seated. i would suggest reseating it--taking it out and putting it back in. (i realize you already did that). but try it again, or a few times, and see if you have any luck.

also, maybe try putting the sim card back into your blackjack just to confirm that the card itself is still good and that the issue is actually something with the iphone.