BLU Tank 4.5 - Manual (Page 19)

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You can adjust the display brightness as required. You may enable/di
sable the “Auto-Rotate
Screen” function to set animation.
Safety
Enter the setting-safety interface to set up screen lock and SIM card lock, enable/disable
password visible function, equipment management and credential storage.
Application
Enter the menu to enable/disable installation of applications from unknown sources, manage
applications and view operating services, storage space use conditions and power level use
conditions, set application development options.
Backup and Reset
To restore the factory setting, all data in the phone will be cleared and the default factory setting
will be restored.
Note: Resetting the phone will delete all the data in the phone!
Storage
Check the memory card capacity and available space, SD card unloading, installation and
formatting (the SD card can be formatted after being unloaded) and memory available space of
the phone.