1st and foremost, be happy that you have got it so soon. Then embrace yourself for the best experience. Go to Back up and Restore in your setting and take a back up. Please note that it will not take back up of your photos and videos completely as there is a limit of 15 GB only. For taking a complete back up you can to that with your laptop or Desktop with latest Smart Switch App. You can take an entire phone back up. It might take some time, so please keep your phone fully charged and system connected to plug point.
After that entire process is done be ready for starting to download the update. Once it is downloaded, install it and then do a factory reset. When the phone is on again do the set up and connect to the system again to restore your data. Once your system is restored, you are ready to use the best mobile experience with One UI2 and Android 10 on board.
