Answer to: Why does my Samsung Galaxy Tab 3 keep shutting off?I to had this happen and have found the problem. IT is a bad spot weld on the battery connector where the ribbon cable hooks to the battery. It can be fixed with a little solder, as this is what i did to fix the problem. if you are not confident with this kind of thing i would recommend finding some one that is. Lithium-Ion battery's are very dangerous. Again, don't try this if you are not sure what you are doing.