Nikita Efimov, head of service at Megafon, warned users against
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If the smartphone is noticeably warm, it is better not to use it. Disable all applications, remove the case and leave "alone" for a few hours.
You can not put the device in the refrigerator, and if the gadget is waterproof, in cold water. In both cases, there is a high probability that condensation will form inside the smartphone and the device will break.
The same applies to tablets with a SIM card slot, as well as smart watches.
Efimov noted that gadgets often heat up during charging. Therefore, if the device is connected to the mains, it is better not to use it until it is fully charged.