If you have ever encountered a situation where your phone automatically shuts down when there is still 20% battery left, the following possible explanations may answer your questions.

With the advent of the information explosion era, as long as an inadvertent action may leak information.

With the popularity of a variety of smart phones, tablet machines, more and more people find that a variety of digital products, especially cell phones own power has been unable to meet the need for life time in daily use, and the emergence of mobile power can be said to a certain extent to solve the problem.

IMEI code, namely the serial number of the mobile phone. It is the abbreviation of International Mobile Equipment Identity. Like the identity card of a mobile phone, it is used to help identify the identity of a mobile phone. Each mobile phone has only one serial number, which is not the same. We usually match the serial number displayed after pressing the "* # 06 #" key on the mobile phone with the barcode on the mobile phone box and the serial number in the back of the mobile phone after removing the electric board. If the three are the same, it is more likely to be genuine goods (not excluding second-hand goods).

If the user wants to extend the effective service life of the battery, in addition to the quality of the charger, the correct charging method is also essential, because the poor quality charger or the wrong charging method will affect the service life and cycle life of the battery. Here are the tips on extending the life of the mobile phone charging battery that the author has compiled:

The working principle of power adapter and charger is the same, both use the principle of AC power conversion to convert AC power into DC power to meet the power needs of the device.

Many people may not know what the server means, but it must be familiar to computer enthusiasts. Generally, it is difficult for us to see the real server, because the server is generally placed at the key of the computer room, and the idle people are generally not allowed to enter. So speaking of the server, many friends who have not contacted with it feel very strange. Here is a detailed introduction to what the server means.

Cell phone NFC and Bluetooth has now been very widely used, the principle is the radio transmission technology, but they have a fundamental difference.

Laptop temperature is too high will lead to switching or open the program relatively lag, serious will make the computer blue screen or automatic restart.

Subnet mask is also called network mask, address mask and subnet mask. It is used to indicate which bits of an IP address identify the subnet where the host is located and which bits identify the bit mask of the host. The subnet mask cannot exist alone. It must be used in combination with the IP address. The subnet mask has only one function, which is to divide an IP address into two parts: network address and host address. The subnet mask is the basic knowledge that everyone who uses the Internet must master. Only by mastering it can you truly understand the TCP/IP protocol settings. Let's explain what subnet mask is in simple terms.