Yes, iPhones from AT&T do have a SIM card. The SIM card is a small chip that is inserted into the phone, and it is what connects the phone to the AT&T network. It contains information about your phone number, plan, and other details that allow you to make calls, send texts, and use data.
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When you purchase an iPhone from AT&T, it will come with a pre-installed SIM card. This SIM card is typically a Nano-SIM, which is the smallest size of SIM card currently available. The SIM card goes into a slot on the side of the iPhone, which can be opened using a special tool that comes with the phone.

To insert or remove the SIM card, you would use the SIM tool to eject the SIM tray from the side of the iPhone. The SIM card fits into this tray, and then the tray is inserted back into the phone. If a SIM card is not in the device, “No SIM” will display in the Control Center of the iPhone.
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It’s important to note that starting with the iPhone 13, some models also support eSIM in addition to a physical SIM card. An eSIM is a digital SIM that allows you to activate a cellular plan without having to use a physical nano-SIM. However, the iPhone 13 models and earlier also have a SIM tray for a nano-SIM card, so you can still use a physical SIM card if you prefer.
In conclusion, AT&T iPhones do use SIM cards. Whether it’s a physical SIM card or an eSIM depends on the specific model of the iPhone. But in either case, the SIM or eSIM is what allows the iPhone to connect to the AT&T network and use cellular services.


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