Android custom distributions (ROMs) for smartphones and tablets

 Android custom distributions (ROMs) are replacement operating systems for Android smartphones and tablets.  This allows users to customize older devices that may not have available Android updates and extend their service life.   This may erase data and void your device’s warranty.  Available security updates are usually based on the Android Open Source Project (AOSP).  More information is at

• Wikipedia – List of custom Android distributions
• Wikipedia – Comparison of mobile operating systems
• LineageOS
• Ubuntu Touch