Troubleshooting Check/update Androidâ„¢ operating system from the smartphone (Over The Air update, OTA)
Over The Air update (OTA) brings corrections to the Androidâ„¢ operating system and installs its earlier version (if available) without erasing personal data:* Wi-Fi connection is recommended for best downloading conditions.
Open "Settings" app : - tap on "System" down the screen, - tap on "Advanced", if needed, - tap on "System update", - tap on "Check for update", if needed.