23Safety information23Do not use or store your device in areas with highconcentrations of dust or airborne materialsDust or foreign materials can cause your device tomalfunction and may result in fire or electric shock.Do not bite or suck the device or the batteryKeep your device dryDo not store your device in very hot or very coldareas. It is recommended to use your device attemperatures from 5 °C to 35 °CDo not store your device near magnetic fieldsDo not use your device with the back cover removedWhen cleaning your device, mind the following• Wipe your device with a towel or an eraser.• Clean the battery terminals with a cotton ball or atowel.• Do not use chemicals or detergents. Doing so maydiscolour or corrode the outside the device or mayresult in electric shock or fire.