[aiiee]

Make sure you only keep the minimum of mails and texts on this phone. It is very sensitive to that. I've found that just doing that will eliminate SOD in most instances. If that doesn't do it, it looks like it's custom ROM time for you, and the necessary unlocking the phone prior to flashing it with a custom ROM. I'm guessing you don't want to do that if you don't have to, so try the email and text reduction first. And I'm talking about keeping just a handful ( less than 10 ) of each. Archive them if you really can't bear to lose them. Good luck.