To unlock your iPhone from its carrier, you'll likely need to contact your carrier directly to cancel your contract.

The iPhone 15 relies on your carrier’s SIM card to connect to cellular networks. A “No SIM Card Detected” error indicates a disruption in this essential process ...

A SIM card, or subscriber identity module card, is essential component of any phone. It connects your device to a cellular network and stores vital information, including your phone number. Many ...

The eSIM is faster and more convenient than a physical SIM card. You can activate an eSIM digitally. You can switch between different providers without having to replace the SIM card physically. eSIM ...

If you need to find out your iPhone's carrier without a SIM card installed, you can do so through the Settings app.

The iPhone Air will only have an eSim - will other phone makers also shift away from the familiar - but fiddly - plastic ...