Firmware Over-The-Air, or "FOTA", is a way in which the firmware of a mobile device is updated wirelessly by the phone's manufacturer. Firmware runs in the background without any input from the user, and is there to make sure the phone's hardware runs properly.
The process of downloading these updates wirelessly usually take three to ten minutes, depending on the connection speed and the size of the update.
How to enable FOTA
Head to your phone's Settings > About Phone > Software Update > Update. If you're having problems with this feature, please contact our customer service department.