Reset all deletes all handset system memory files including some preinstalled applications irreversibly. Back up important information before performing Reset all.
In application sheet,(Settings)
Other settings
Other settings opens.
Reset allReset all
Enter Operation PasswordOK
Reset all window opens.
Read messageReset phone
Information of currently signed in account will also be deleted.
To delete all SD Card files simultaneously, Tap Erase microSD (appears).