The IQOS is an electronic device that should be treated with the same care as a smartphone, for example.
Protect your IQOS from water, direct sunlight, and heat. Do not leave your IQOS in hot places, such as the interior of a car, for long periods of time since this could damage or significantly impair the battery or electronics.
Make sure that the holder is completely dry before you connect it to the pocket charger again. At low temperatures, you can prevent potential malfunction by briefly warming it in your hands.