Switching carriers or using a different SIM card on your iPhone doesn’t have to be complicated. If your device is SIM-locked, ...

Just because you unlock your phone doesn't mean that you can use the phone on any network. The SIM card for the new network must compatible with the network your phone currently supports.

Power your phone on, and then enter the unlock code you received earlier. Your unlocked LG phone is unlocked, and working with your new SIM card.

There is actually a way to make the phone open line and allow any SIM of the users' choice (as long as it is functional) to be used.

iPads bought on a network contract may be SIM-locked to that network. Here's how to unlock the iPad - and advice on whether it's legal for you to do so ...

To check if your Android phone is unlocked, try swapping in another SIM card or test your network settings. If calls work, ...

By using a new piece of software called iASign you can pop in any AT&T SIM card and have it work with the iPhone. For those wondering, that does include a Go Phone SIM card.

How do I remove the existing carrier without a new SIM card? If you are looking to remove the existing carrier from your iPhone without a new SIM card, then this can be done by restoring your device.

Unlocking your phone allows you to use it on any carrier you want, not just AT&T. You’ll pop out your AT&T SIM card and insert the SIM card of a different carrier. The iPhone doesn’t allow you ...