Does the subject want to ask, "Will the mobile phone catch fire when it is charged for a long time?" Yes According to Xiaomi official website's inquiry, the instantaneous discharge of the lithium battery of mobile phone under special conditions such as temperature, humidity and poor contact will generate a large amount of current, which will lead to spontaneous combustion or explosion, so the mobile phone will catch fire if it is charged for a long time. Mobile phone, called mobile phone or wireless phone, was originally just a communication tool, a portable telephone terminal that can be widely used. It was originally developed from the battlefield mobile phone manufactured by Bell Laboratories in 1940.