Meizu 21 charging hot may be due to a variety of reasons, including:
Fast charging: The Meizu 21 supports fast charging of up to 30W, which can cause the phone to heat up.
High temperature environment: Charging in a high temperature environment will cause poor heat dissipation of Meizu 21, resulting in heat.
Battery failure: The Meizu 21 May have a faulty battery, which can cause the phone to heat up while charging.
Software issues: There may be a problem with the Meizu 21's software, which causes the phone to heat up while charging.