If you think your mobile system has affected in virus or any error or GPRS is not proper working. Just try to refresh your mobile.
now i post a another trick for refreshing your mobile.
Press *#7780# then press ok.Then put your mobile security code number.
Now your mobile is refreshed and virus is removed.and this code cant delete any content.only refresh your mobile settings. so the virus are removed in your phone memory only.but the virus are available in your memory card you must scan the memory card in your pc or format your memory card.
share this trick and any problem leave a comment.