Here’s a proper write-up for the and its relationship with LineageOS . LineageOS on the Samsung Galaxy Tab 3 7.0 (SM-T210R): Breathing New Life into a Legacy Device Introduction The Samsung Galaxy Tab 3 7.0 (model number SM-T210R ) was originally released in 2013, running Android 4.1.2 Jelly Bean. While the hardware remains surprisingly capable for basic tasks—web browsing, e-reading, media playback, and light gaming—the stock software has long been obsolete, insecure, and incompatible with modern apps.