Popular Science: Analysis of changes in mobile phones under severe cold weather
As mentioned above, various problems of mobile phones caused by low temperature may occur on you, so it is recommended that you keep warm your mobile phone in a cold environment or in a high altitude environment, such as putting your phone in your pocket or not using it. Shut down when. This can protect the battery, screen and other components of the phone to prevent damage to the phone caused by low temperature.
Since the beginning of 2018, the country has experienced a large-scale cold air. The cold weather has appeared in many places across the country. It has also been the first snow in 2018, and the cold air has not stopped. This week will be ushered in again. A new round of air, cold weather will continue. For mobile phones, there may be changes in the cold weather. Earlier reports also pointed out that the battery life of the mobile phone in the low temperature environment is worse, and even the problem of automatic shutdown. So, what changes will happen to mobile phones in cold weather?
Some time ago, many users who used iPhone6s reported that the mobile phone was automatically shut down in a cold environment, so be sure to connect the charger to reboot. This is because Apple's protection against the iPhone's battery can prevent battery damage. However, after Apple updated the system, it seems that this situation has rarely occurred, and the subsequent iPhone rarely happens to shut down due to low temperature. The Android-based mobile phone also has some reports of low-temperature automatic shutdown. Therefore, this situation of automatic shutdown of the mobile phone due to low temperature is only an accidental occurrence, which is not a common phenomenon.
Power consumption plus block:In a cold environment, the battery consumption of the mobile phone is particularly fast. This is not because the battery of the mobile phone is broken, but the battery activity of the mobile phone is reduced. The working principle of lithium batteries mainly relies on the movement of lithium ions between the positive and negative electrodes. At low temperatures, it is not fast for the battery, but the lithium ion activity in the lithium ion battery is lowered due to the low temperature, so that the amount of electricity is relatively reduced. As long as you get back to normal temperature, you will soon return to normal.
We also conducted a simple test to compare the iPhone 7 Plus to 15 minutes of video playback in a minus 10 degrees Celsius environment and 15 minutes of video playback at room temperature. It can be seen that the iPhone 7 Plus consumes 18% in a cold environment. Electricity consumption, while only 3% of electricity is consumed in a normal temperature environment.
Screen smear:We found the iPhone7 Plus screen smear in an environment of minus 10 degrees Celsius, and many users have responded to the smear of the phone in a cold environment. The occurrence of smear occurs mainly on the mobile phone of the LCD screen material, and the screen using the AMOLED screen material does not substantially cause smear due to the low temperature. This is mainly caused by the characteristics of the LCD material. In the low temperature environment, the response speed of the liquid crystal molecules on the inner surface of the LCD screen becomes slow, which causes the screen to smear. As long as the temperature returns to normal, the smear problem will disappear automatically.
Fingerprint recognition failure:There are also many users on the Internet who report that the fingerprint recognition of the mobile phone is in a cold environment. We also did a test, and the fingerprint recognition of the iPhone 7 Plus failed in the environment of minus 10 degrees. The reasons for the failure of low-temperature fingerprint recognition are still widely discussed. Some of them are fingerprint recognition modules that do not work in low temperature environments. Some say that their fingers are dry in winter, and the fingerprints are not obvious at that time. However, the author believes that the problem is mainly the fingerprint recognition module. The conductivity of the lower capacitance recognition module is lowered in a low temperature environment, resulting in the inability to recognize the fingerprint or the fingerprint recognition error.
Performance degradation:
Originally, I believe that the performance of mobile phones in low temperature environment will be better than normal temperature, but after testing, we can see that the performance of iPhone7 Plus is not as good as normal temperature in the environment of minus 10 degrees. However, it is believed that the performance of some Android phones at low temperatures is improved. In the low temperature environment, the temperature of the CPU of the mobile phone can be further reduced, thereby reducing the occurrence of frequency reduction and improving the performance of the CPU.
Summary: Keep your phone warmAs mentioned above, various problems of mobile phones caused by low temperature may occur on you, so it is recommended that you keep warm your mobile phone in a cold environment or in a high altitude environment, such as putting your phone in your pocket or not using it. Shut down when. This can protect the battery, screen and other components of the phone to prevent damage to the phone caused by low temperature.
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