Hello world…as we all know android has been one of the most popular device in the world and as a result of that it may require upgrades for it to function well
Normally, you will get notifications from OTA (over-the-air) when the Android Pie update is available for you. From here, you can open it and tap the update action to upgrade the Android system to the latest version.
How To Upgrade Your Android Phone version
However, if for whatever reason, it isn’t being rolled out to your phone or you accidentally cleared the notification, then you need to update Android version manually:
1. Connect your fone to a mobile network or wifi
2. Goto setting and locate system update
3. Click on system update..by this time your phone will have to start searching for the latest update of your device
4. Once the update is found you download and reboot your device for the changes to take place.