■ Phone software updates
You may initiate phone software updates from the
Phone updates
menu.
Also, your service provider may initiate the updates by sending them
over the air directly to your device. This function is known as firmware
over the air (FOTA).
Warning: If you install a software update, you cannot use the
device, even to make emergency calls, until the update is
completed and the device is restarted. Be sure to back up data
before accepting a FOTA update.