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20. Others
Troubleshooting
First, try out the following procedures (P183–P188).
Cannot turn the unit on.
≥ Check that the battery is adequately charged.
Touch screen does not operate even when tapping it.
≥ Check that the unit is not in sleep mode.
> If the unit is in sleep mode, press the [ ] to release sleep mode.
The unit does not operate as expected.
≥ Check the following methods.
> Turn the unit on/off.
> Turn the unit off, remove the microSIM card and reinsert it.
> Run an update. (P177)
> With the microUSB terminal disconnected from an AC adaptor or other devices, press and hold the [ ] for
approximately 10 seconds until the unit restarts. The unit vibrates as it restarts.
> Reset the unit. (P174)
Forgot how to release the screen lock.
≥ If [Pattern] has been set as the method to release the screen lock:
> If a Google account has been configured, the [FORGOT PATTERN] is displayed if the incorrect pattern is
entered 5 times.
After tapping [FORGOT PATTERN], enter the Google account and password to release the lock.
≥ If a Google account has been configured, the lock can be released by accessing the following site with a computer
or other device.
> https://www.google.com/android/devicemanager
After logging in, check the device to release and select [Lock], and follow the instructions on the screen to set a
new password.
Entering the new password into the unit will release the lock.
Cannot charge the battery.
≥ Check the connection of the AC adaptor. (P14)
≥ Check the surrounding temperature.
The battery charging icon is not displayed.
≥ It takes time from when charging starts to when the icon is displayed.
The battery usage time is short.
≥ The usage time becomes shorter due to various factors, including how often the unit is used, the configuration
settings in the unit and the network status.
The unit becomes warm.
≥ The unit may become warm during use or while charging. This is not a problem from an operational perspective, and
should be left as is.