Hi - having a panic, not very phone savvy... Bought a replacement Samsung galaxy s2 on eBay 6mths ago and it had jellybean installed ..ending contract with three early and need to send back phone with memory cleared. I did a 'restore factory settings' on the menu system which seemed logical at the time. Wrong thing to do!! So phone is now black and unresponsive. If I hold power button it comes up with an empty battery sign, battery was full 5mins ago and is now charging, still showing the same. Holding buttons down together doesn't get a response. Please can someone advise , is there anything I can do??