I have had this phone on orange since Nov 2009, A couple of months ago the phone started playing up , the phone sitting on standby would randomly light up and dial the last number on the dialled or received list , then the lock /unlock function would not work ( no access to the keypad when dialling a number) and the return button would not work). contacted Orange who after conflicting information said to return to orange shop , they said as it was more than 6 months to contact samsung. I have sent he phone to samsung twice where it was 'repaired' and worked for less than 24 hours and then same problems occurred. How often should this happen until they replace the phone . Any help would be appreciated .