My 900 has been acting wierd for couple months now. I'm curious what would happen if I took out my sim card, reset my phone, then put my sim card back in and sort of "started fresh" again. Would this cause any harm? Could it possibly help? Some of the issues I'm having are: buggy/laggy scrolling, typing and app opening and annoying error messages that my info is not up to date for Facebook and email. Any ideas?