Sunstech CA107QCBT 32GB Manuel D'utilisation page 24

 If you do not use the battery for a long time, you may reduce its service life and performance. You may also cause the malfunctioning or explosion of the
battery or a fire.
Follow all the instructions in this manual to guarantee the longest service life possible for your device and battery. Any damage or operating problems
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caused by not complying with the warnings and instructions may cancel the manufacturer's warranty.
With time, the device may wear out. Some parts and repairs are covered under the warranty during the validity period; however, the damages or
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deterioration caused by the use of accessories not approved by the brand are not covered.
Take the following information into account when using the device.
Use it in a vertical position, as you would a traditional telephone.
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Speak directly into the microphone.
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Do not cover the antenna area with your hands or other objects. This may cause connection problems or cause the battery to run down.
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Do not unassembled, change or repair the device.
 Any alteration or change to the device may cancel the manufacturer's warranty. If you need to repair the device, take it to an authorized service centre.
 Do not disassemble or make holes in the battery, this may cause an explosion or a fire.
Turn off the device before removing the battery. If you remove the battery while the device is still turned on, this may cause malfunctioning.
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Take the following information into account when cleaning the device.
Use a towel or a rubber cloth to clean the device and the charger.
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 Clean the battery terminals with cotton or with a towel.
 Do not use chemical substances or detergents. If you do so, you may cause discoloration or corrosion of the outside part of the device or you may cause
an electric discharge or a fire.
Do not use it for any other purpose other than the one it was designed for.
The device may malfunction.
When you use the device in public, try not to disturb others.
Only allow qualified professionals to carry out the maintenance of your device.