My Samsung Galaxy Rugby Pro running 4.1.2 boots into safe mode automatically. I was having troubles with my volume keys being VERY sensitive a few days ago and at some point I restarted my phone. What I think happened is due to them being super sensitive, my down volume bbutton was being pressed which triggered safe mode. Now it is stuck in it and my down volume key no longer works but my up key is very sensitive. Its been over a year since ive had it so its not warranty covered.