You don't need a SIM card and cellular service to use most features of today's iPhones and Android phones. Most apps and services run just fine as long as you have access to WiFi, and you can even set ...

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

What is a SIM card used for? A SIM card, or a subscriber identity module/subscriber identification module, is a tiny memory card that contains unique information and is linked to a particular network ...

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

The way we communicate is changing, and the old-school SIM card starts to feel a bit outdated. Adapting to these changes can be challenging. But don't worry—virtual phone numbers are here to save the ...

Removing a SIM card from your phone can sometimes seem like a daunting task, but it is a relatively straightforward process that can be necessary for various reasons, such as switching carriers, ...

A user has an iPhone 3G from a relative in France. Has the phone, but no SIM card. Can't activate it initially because he has T-Mobile, so no valid SIM at all. I can't even use an ATT SIM (in US) so ...

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