Why does the mobile phone crash when the weather is hot?

The phone crash has nothing to do with the weather;

The following investigations are recommended:

1, system upgrade, software upgrade, will it crash?

2. If it is still the same, clean up the garbage in the mobile phone system and kill virus. If it is still the same, restore the factory settings of the mobile phone.

3, if still, brush the machine again.

4, if still, most of them are motherboard problems.