When the mobile phone receives a text message or a phone call, it will automatically turn off.

The situation you are talking about is that the cpu chip of the motherboard or another bus chip, also known as the entertainment chip, is broken. Mainly cpu chips. As soon as the phone is answered, the cpu shuts down when it receives the shutdown signal. Of course, charging means more stable power supply. It may be the battery circuit. However, due to insufficient battery power supply, the cpu cannot consider the machine signal. Generally speaking, most motherboards are broken.