Hey guys i have a problem! My little brother was on my phone last week and he was searching for games on internet and seems like hes click on add and download virus. On my phone was a weird program so i opened it to se what is this. So when i open the program phone crashed. Now my phone is laggy and slow. It looks like my SD card was attacked too because it doesnt work anymore. So is there any way i can completely reset my phone and delete all the viruses?