To hard reset your Nokia Asha 311 this method will helps you a lot just follow the following setups and reset your phone. First Method 1. Remove your sim card and sd card from your phone during this method
2. Now Dial *#7780# or *#7370# 3. After That device is auto restart Done. Second Method 1. At First Turn On Your Device. 2. Than Select This Option Menu -> Settings -> Reset Factory Settings -> All 3. After That Enter Your Security Code. Default Code Is 12345. Done.