Samsung Galaxy Tab A 10.1 2019 LTE vs Samsung Galaxy Tab A 10.5 LTE vs Samsung Galaxy Tab S6 Lite comparison on basis of performance, camera, battery, display, reviews & ratings and much more with full phone specifications at Gadgets Now. Apr 05, 2015 · Update Samsung Galaxy Tab S 10.5 LTE SM-T807R4 Android 6.0.1 Marshmallow. Turn off the device. Press and hold Volume Down key + Home key. then Press and hold Power key. Release all key when you see ODIN Mode. Use Volume Up key to continue. Use Volume Down key to cancel ( Restart the device ) Hard reset Samsung Galaxy Tab S 10.5 LTE T805. In Recovery Mode select wipe data / factory reset..