What happened to the sudden shutdown of Apple's mobile phone?

1. Poor contact between the phone and the battery will cause the phone to turn off automatically.

Influence of mobile phone operating environment: After entering the winter, the probability of automatic shutdown of iPhone is greatly increased due to the cold weather and temperature drop.

Because the battery of iPhone uses lithium-ion battery, the temperature of lithium-ion battery is too low at low temperature, which will slow down the chemical reaction speed of internal electrolyte, weaken the activity of lithium-ion between positive and negative electrodes, and lead to unstable battery discharge performance, so there will be automatic shutdown. It should be avoided to be used in outdoor cold environment for a long time, and the iPhone will automatically turn on at a suitable temperature.

2. Poor contact between the 2.SIM card and the mobile phone will lead to the automatic shutdown of the mobile phone.

Low temperature affects the activity of electrons: low temperature in winter will affect the battery capacity, so the activity of electrons will "slow down", and another is that the battery itself will age due to long use time.

3. The failure of the electronic components of the mobile phone motherboard will lead to power failure, which will lead to the automatic shutdown of the mobile phone.

Apple official website technicians said that battery hardware, system, motherboard and weather may all lead to automatic shutdown. Users are advised to test the battery hardware first, and then upgrade the system if there is no problem. If the system is automatically shut down after upgrading, you need to go to Apple's official maintenance point to return to the factory for maintenance.

In addition, Apple's relevant technical personnel said: battery hardware, system, motherboard and weather may all lead to the above-mentioned automatic shutdown problem, and the best operating environment of Apple's mobile phone is room temperature 15 degrees Celsius to 22 degrees Celsius.

4. When the phone cable fails, the phone screen will not light up. This situation is not automatic shutdown, but the screen does not display, but the phone works normally.

Extended data:

How to automatically shut down/restart Apple's mobile phone with remaining power;

1. Use in cold or hot environment. The optimal working temperature of iPhone is between 0-35 degrees. Please confirm the temperature range of the use environment.

Second, the built-in lithium battery is aging. After 500 charging cycles, the capacity and performance of the built-in lithium battery in iPhone will also decrease. It is recommended that you contact Apple's technical support hotline at 400-666-8800 (local telephone charge) to remotely check the battery capacity.

Third, hardware failure.

If the above problems are eliminated, it may be caused by hardware failure. It is recommended that you take the iPhone purchase voucher to the nearby Apple Store or authorized repair center for testing.