Android upgrades for the Android operating system on Android phones and tablets. Check to see what Android version you have, then verify if an upgrade is available. It is important to keep your Android phone or tablet using the most recent version of Android.
Keep your apps upgraded to the most current version to avoid problems. Google Play store has options to automatically upgrade all or some of your apps.
Many older Android phones and tablets are not designed to use the new versions of Android. Also, the manufacturer may not be making a new version of Android available to download and upgrade to.