how to upgrade android version on phone
5. Tap on Update or Check for system updates. Your phone will now check the server for new updates. Once through, if there are new updates available, a summary of the latest version will be displayed on a pop-up menu. 1  Your phone may not be eligible to upgrade to Android 4.0.2  It is up to your carrier to make the new version available for OTA updates.ips. 1  Always remember to backup your files on your computer first before doing any update as this process may delete all the data on your phone. 2  Some phones may not be eligible to update to Ice Cream Sandwich.