Is it common for iPhone 6S phones to automatically shut down when the temperature is low?

It is a common problem for current Apple devices to shut down due to low temperatures. Because when the ambient temperature is too low, the battery capacity of the mobile phone will drop sharply, because the cold environment will increase the resistance of the electrolyte of the device's lithium battery and reduce the chemical reaction rate, making the battery unable to release power even though it is charged, eventually causing the device to automatically shut down. .

Extended information:

Mobile phone batteries are composed of three parts: battery core, protection circuit and casing. Currently, mobile phone batteries are all lithium-ion batteries (often referred to as lithium batteries in non-standard situations), and the cathode material is lithium cobalt oxide. The standard discharge voltage is 3.7V, the charging cut-off voltage is 4.2V, and the discharge cut-off voltage is 2.75V. The unit of electricity is Wh (watt hour).

The memory effect is an effect in which the battery contents crystallize due to battery use. Generally, it only occurs in nickel-cadmium batteries, less in nickel-metal hydride batteries, and does not occur in lithium batteries. It occurs because the battery is repeatedly partially charged and discharged incompletely. The battery capacity will be temporarily reduced, resulting in shorter talk time.

Mobile phone chargers are divided into direct chargers and seat chargers. Direct charging converts 220 AC mains power into 5V DC, which is input into the mobile phone and is stepped down by the mobile phone's charging circuit to be used by the battery. Generally, it will be delivered when purchasing a mobile phone. The charger is directly connected to the battery and converts the mains power into the required voltage for the battery to use.

Reference materials:

Zhongguancun Online - It turns out that they are the real culprits behind the automatic shutdown of mobile phones