Samsung Galaxy S2 issues: I have had this phone for about a year and lately it has been shutting down on me (almost like recovery mode) very frequently. It'll stay on for a little while then shut down randomly and then reboots a few times before even hitting the main log in screen. Additionally, I sent out two emails (this phone is for business) and had some upset clients when they never received my emails even though it said it sent. I've factory rebooted it, and am still having these issues. It's incredibly inconvenient and I'm not sure what to do about it. Thanks.