Samsung SM-T555 User Manual Page 116

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Appendix
116
The touch screen responds slowly or improperly
•
If you attach a screen protector or optional accessories to the touch screen, the touch
screen may not function properly.
•
If you are wearing gloves, if your hands are not clean while touching the touch screen,
or if you tap the screen with sharp objects or your fingertips, the touch screen may
malfunction.
•
The touch screen may malfunction in humid conditions or when exposed to water.
•
Restart your device to clear any temporary software bugs.
•
Ensure that your device software is upgraded to the latest version.
•
If the touch screen is scratched or damaged, visit a Samsung Service Centre.
Your device freezes or encounters a fatal error
Try the following solutions. If the problem is still not resolved, contact a Samsung Service
Centre.
Restarting the device
If your device freezes or hangs, you may need to close apps or turn off the device and turn it
on again.
Forcing restart
If your device is frozen and unresponsive, press and hold the Power button and the Volume
Down button simultaneously for more than 7 seconds to restart it.
Resetting the device
If the methods above do not solve your problem, perform a factory data reset.
On the Apps screen, tap
Settings
Backup and reset
Factory data reset
RESET
DEVICE
ERASE EVERYTHING
. Before performing the factory data reset, remember to
make backup copies of all important data stored in the device.
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