UTOK Hello 7D, Руководство пользователя

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7. Usage time too short
• Battery usage time can be influenced by the temperatures in
the working environment. If the temperature is too high or too
low, the working time will be affected. It is recommended to use
the device in a normal temperature environment.
• Battery usage time depends on the way you use the device.
High audio volume or WiFi make the battery life shorter.
• In order to have a long lasting life for the battery, please
charge it for 8 to 12 hours before the first use.
8. Headphones without sound
• Make sure the audio file you are trying to listen to is not
broken. Try listening to another audio file to confirm.
• Make sure you have a good wire connection between the
headphones and the device.
9. Display color problems for photos or videos
• Press the RESET button to check this issue.
10. Erors while copying files
• Please check if the storage space is full.
• Please check if the USB cable is in good condition.
11. Other problems
• Most of the problems can be solved with restarting of the
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