49Troubleshooting
The unit’s operation is slow.
• Ambient temperature may be too low or too high. Leave the unit
in an environment of 10
°
C to 35
°
C (50
°
F to 95
°
F) for about an
hour and then try again.
The unit does not respond.
• Turn the unit off and then on again (page 42).
• If an app does not work normally, follow the instructions below to
force quit or uninstall the problematic app or process.
1.
From the home screen, tap
→
[Settings]
→
[Apps]
.
2.
Select the desired app or process and then tap
[Force stop]
or
[Uninstall]
.
The screen freezes and no operations can be performed.
• Press and hold (power button) for at least 10 seconds to force
the unit to restart, and then try again.
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