Ok so today my phone has sporadically been unresponsive to touch screen presses or thinks I am pressing other parts of the screen. I have calibrated it whene it was working and it semed to work fine. Also the phone seems to be running randomly slowly. Could I need to do a dreaded re-flash? (not idea as I'm currently stuck in poland)

How do I check on the phone that my contacts are saved to the sim not the phone?!!!