A man, allegedly, had a short call on his mobile phone when the lightning struck. The liquid crystal surface of his mobile phone was blown up.
Another man who had a mobile phone around his neck was struck by lightning and killed.
Researchers refer that this is because the electromagnetic waves that are generated during the operation of a mobile phone "catch the thunderstorm".
Public places are considered relatively safe because they are all equipped with lightning arresters, but in places without lightning arresters (fields, seas, etc.), people and mobile phones are exposed to the ground surface, so that mobile phone can be the discharging medium of the cloud.
If you turn on your phone when lightning strikes, your mobile phone will easily get the lightning. So it's better to turn off your mobile phone when lightning strikes.