I took it to Apple yesterday and they told me that it was AT&T. Then right beside it, it said cricket wireless locked. But it is also saying it's a cdma phone. He told me that sprint or Verizon is the carrier. So I went to both and they told me cricket wireless is the carrier. I'm so confused...

I am trying to get my iPhone 5 unlocked but I need to also know what carrier it is before I can get it unlocked. The imei number is 990003194964116. I would greatly appreciate it if somebody helped me thank you Sent from my iPhone using Tapatalk

The SIM card I used was a working SIM card from sprint. But I'll also try going to the sprint store. Thank you Sent from my iPhone using Tapatalk

When I put the SIM card in it shows that it's cut on but it still says sim not valid Sent from my iPhone using Tapatalk

There is no name showing beside the dots. Sent from my iPhone using Tapatalk

I bought the phone online on Craigslist. It was on the activation stage and I trusted the guy. I talked to sprint and they said it should work but it doesn't Sent from my iPhone using Tapatalk

And I have heard that this thing called an r-sim 9 might work Sent from my iPhone using Tapatalk

I went online and it said it was sprint then I called Apple and they told me it was AT&T. The imei number is 990003194964116 Sent from my iPhone using Tapatalk

I know that the SIM card reader is good because the little dots that indicate you have a signal appear in the upper left hand corner Sent from my iPhone using Tapatalk

I have tried every SIM card with every major U.S. Cell phone carrier and at the setup stage of the phone it keeps saying that my SIM card is invalid. I believe it is an unlocked model because every time I have called sprint, AT&T, etc, they have told me it's unlocked and it belongs to them. I...