11. LOCKING AND SECURITY
This chapter provides information about how to protect the information stored
on your device.
Screen lock mode
To protect your device data against unauthorized access, lock the screen and set
an unlock mode for unlocking the screen. To enable the screen unlock function
and set up a password, PIN, or a pattern to unlock the screen, do the following:
• Open the Settings screen;
• Touch and choose "Security" and, then, "Screen Lock". A screen called "Choose
screen Lock" appears, and you will see several options described as below:
None - The screen doesn't lock. The main Home screen appears directly
whenever you turn on your device;
Swipe - This activates the sliding lock screen;
Pattern - This activates a pattern-tracing screen. You are required to trace
the pattern in a specific order to unlock your device;
PIN - You are required to type a personal identification number (PIN) to
unlock your device;
Password - You are required to type a password to unlock your device.
• Follow the instructions to set your lock;
• Touch OK to save your setting;
• Make a note of your password, PIN, or pattern in case you forget it.
12. HELP AND TROUBLESHOOTING
12.1 Troubleshooting
This chapter describes some common problems and suggested solutions, and ways
to recover your device from a crash. Be aware that the problems and solutions
described in this chapter are meant only as a guide. They are not definitive problem
solving techniques. For certain problems, you might need help from your technical
service provider.
When you observe a problem, stop operation immediately, because taking further
action might result in data loss or damage. Take a note of what the system is
doing and what actions you performed before the problem occurred. Provide
detailed information to your service provider for quicker problem resolution.
For most problems, follow these steps:
• Restart your device;
• Check your Wi-Fi connection;
• Reset your Wi-Fi connection;
• Plug your device to a wall outlet to charge it for at least one hour.
My device won't turn on or off.
Press and hold the Power button for about 4 seconds, the device will either turn
off or on. If it fails, wait for about 5 minutes and repeat step 1.
The battery won't charge.
Check if the wall outlet is providing power.
Check if your adapter is plugged into your device firmly.
The screen doesn't rotate.
Not every app supports this feature. Go back to the Home screen to check if the
device responds and rotates the screen.
If it refuses to rotate, make sure the "Auto-rotate screen" item is not locked.
No sound coming from my device.
If the headset is plugged into the device, the speaker is automatically shut off.
Disconnect the headset. Check that the device volume setting is not muted.
Check that the volume control is not at its lowest setting.
I cannot view my picture files.
If the files are photos taken using your device, restart your device.
If the files are from other sources, check if they are damaged.
If they are not damaged, try to convert them to a more widely supported format
such as JPEG.
I cannot play my video files.
If the files are videos, recorded using your device, restart your device.
If the files are from other sources, check if they are damaged.
If they are not damaged, try to convert them to a more widely supported format
such as MP4.
I cannot play my audio (or music) files.
If the files are recorded using your device, restart your device.
If the files are from other sources, check if they are damaged.
If they are not damaged, try to convert them to a more widely supported format
such as MP3.
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