2012-06-22 15:45 - edited 2012-06-22 15:50
You do not need any Anti Virus for your phone. It will unnecessarily use up resource on your device...
Have a look at THIS for reference ...
The problems you are facing need not be related to Virus. If you could remember when it started happening.. after you installed a specific application or so...
So..just to confirm, remove the Memory Card and see if the problem is still there ..If not then Format the Memory Card and then check again with the MC..
There need not be any Virus in your Memory Card.. It may be a case of Corrupted Data.. Copy the Music / Data on your PC first. Then Format the Card. If you wish, scan for Virus when the Data is copied to PC...
Can you provide us your phone model? One possible reason why the phone hangs is that there is not enough memory available to carry out phone functions. You can move your data files from phone to memory card (provided that your phone supports Memory Card). If still the same, you can try to restore the phone to its factory settings as indicated on your manual.