Why does the screen go black when the phone dials the dial button?

This situation is mostly caused by driver software conflicts, but motherboard problems are not excluded.

A mobile phone, also known as a mobile phone, is a mobile phone that can be held in the hand. In the early days, it was commonly known as Big Brother because of its larger size. Now it has developed into the 4G era. In April 1973, American engineering technician "Martin Cooper" invented the world's first mobile phone for civilian use. "Martin Cooper" has since been called the "father of the modern mobile phone." Until now, mobile phones have become a very important tool in people's lives and have as many functions as a Swiss army knife.

A mobile phone, also known as a mobile phone, is a mobile phone that can be held in the hand. In the early days, it was also commonly known as Big Brother (the Big Brother in the Hong Kong police movie has one), which was a portable phone terminal that could be used in a wide range. There are several types of mobile phones: 2G, 3G, and now it has developed into the 4G era.

With the improvement of people’s health and the extension of life span, the elderly account for an increasing proportion of the population. The elderly group, which accounts for nearly one-third of the population, needs their own mobile phone. Their requirements for mobile phones may include simple operation and large display fonts. After Serote took the lead in launching mobile phones for the elderly, many Manufacturers have followed suit and developed their own brands of mobile phones for the elderly.

Practical functions: large screen, large fonts, large ringtones, large buttons, large call tones;

Convenient life: professional software (visualization, simple menus, clear structure), One-touch dialing, banknote verification, flashlight, hearing aid, voice reading phone book, reading text messages, reading incoming calls, reading dialing)

Not only that, but also has the function of improving the quality of life of the elderly: external radio, Peking Opera, one-click distress (a high-decibel distress tone is emitted after pressing the button, and a distress call and distress text message are sent to the designated number at the same time.), daily recipes (preferably downloadable and updated online), and grocery shopping lists.