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

On an Android phone, you can set a SIM PIN, using the Settings menu. Tap the Settings app on your home screen, then tap to go to the "Security" or "Fingerprints and Security" submenu.

When you enter a new PIN number for that SIM card after successfully entering the previous one, the phone will unlock to your home screen and give you full access.

The big reason to update to the November security patch is a bug fix for a security issue that can unlock your Pixel lockscreen ...

Done with a long term contract or looking to switch network carriers but keep the phone? Here's everything you need to unlock your Vodafone UK phone!