Your phone's SIM card allows the device to make calls, send texts, and connect to the internet. The SIM card provides a phone number that identifies your device on the carrier's network, whether it's ...

Google’s system basically keeps all the security of a SIM PIN, while removing all the inconvenience. Just make sure you jot down the Android-managed PIN somewhere secure, in case your phone ever dies ...

Beta 2 gives new clues ...