What's the matter with Apple's mobile phone sending messages and handwritten screen jumps?

1. When charging, the voltage is unstable or an unofficial or cottage charger is used to charge the mobile phone. Try to avoid charging equipment in an unstable voltage environment.

2. Hardware problem: the mobile phone is a refurbished machine or uses a poor quality screen. Confirm that the screen jumping phenomenon of mobile phone is caused by hardware quality problems such as screen, and consider replacing the screen or machine.

3. System problem: The firmware version of the system does not match the mobile phone, so you can refresh the mobile phone.

4. The inferior mobile phone membrane is easy to generate static electricity, which will increase the probability of capacitor screen failure. Replace the mobile phone membrane.