Do iphone from at&t have sim cards?

I was wondering if iphone 3gs have sim cards that are from AT&T?

Nope.

AT&T's iPhone is a GSM phone. It will take SIM cards.

However, in most cases, you will need to unlock the phone to be able to insert any card other than AT&T. Unlock means to remove the programming that makes the phone only able to operate with only one specific carrier's SIM. By breaking this lock, you will be able to use the phone on other services like T-Mobile, and even use the phone overseas with local prepaid SIM cards as well.

If phone need a sim card for service…

Yes, they all have SIM's cards.

  • Will T-Mobile have nano-sim cards when the new iphone comes out? I want to buy an unlocked new iphone when it comes out and use it for T-Mobile, but since the new iphone will most likely be using nano-sim cards. I want to know if T-Mobile will have nano-sim cards by the time the new iphone is released.
  • Will switching sim cards from one iphone to another work? Basically my iphone 4s charging port will not work and won't charge normally and stays at about 5 percent. It also won't connect to my PC. To avoid using i cloud and everything can i just switch one sim card to the new iphone 4s and will all my memory be on there? If not what will?
  • WHICH IPHONE USES NORMAL SIM CARDS? I HAVE A NORMAL SMART PHONE SIM CARD, BUT MY SMART PHONE JUST MEST UP TODAY. So I'm TRYING TO BUY A IPHONE OF CRAIGSLIST, AND I SAW SOME VIDEOS ON YOUTUBE THAT SAY THAT IPHONES HAVE A MINI SIM CARD. So I'm WORRIED ABOUT THIS WHICH I PHONE SHOULD I BUY? Help Help CARRIER AT&T
  • Taking out sim cards and cellular data on iPhone 4s? Currently I'm in a different country and do not want any unexpected charges to pop up on my bill when I return. My sim card is out but I still send emails and browse the internet using the local wi-fi from my location; since the sim card is out, I won't be charged? Also, what is cellular data? Like I said, I took out my sim card and data roaming is disabled but cellular data is turned on, I won't be charged for it being on since the sim card isn't inserted, correct?

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