1. Secret Codes Functions *#*#7780#*#* 1. Factory restore setting *#*#7780#*#* 2. Clear all application and data. *#*#7780#*#* 3. Remove Google account setting. *#*#7780#*#* 4. Remove System, application data and settings. *2767*3855# 1. Reinstall the phones firmware. *2767*3855# 2. Used for factory format. *2767*3855# 3. Remove all files and settings including the internal storage. *2767*3855# 4. Reinstall the firmware. *#*#197328640#*#* 1. Enabling test mode for service activity. *#*#197328640#*#* 2. Used to enter into Service mode. *#*#197328640#*#* 3. You can run and change various tests and settings in the service mode. *#*#4636#*#* 1. Phone basic information. *#*#4636#*#* 2. Phone usage detail. *#*#4636#*#* 3. Battery information. *#*#349...