You'll need your iPhone's IMEI number if you want to unlock it and use it on a different cellular provider.

To remove the SIM card from your iPhone, you'll need to eject the SIM card tray with a special tool or paperclip.

Anyone looking to add more than one number to their iPhone, maybe to keep work and pleasure separate or just to have multiple numbers on one device. Will be pleased to know that this is made possible ...

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