I've had my Galaxy SIII for abt 3 years now. I don't want to have to trade it in (I love it) & I haven't seen a phone to trade in for that I like. In the past 2-3 months it's been messing up on me more & more. Now, I can't even use my email apps & other apps don't want to work correctly. Is there an update that my phone doesn't want to say is available?