If the plastic cover on the mobile phone is not good, it will affect the heat dissipation of the mobile phone and hinder the signal of the mobile phone. Mobile phone hardware will be affected by moisture for a long time, which will affect the life of the mobile phone. Some plastic cases of mobile phones will also emit toxic gases when the mobile phone is hot, which will affect people's health.

I. Mobile phones (mobile phones)

Mobile phone, or wireless phone, usually called mobile phone, was originally just a communication tool, commonly known as mobile phone in the early days.

Mobile phone is a kind of portable telephone terminal which can be widely used. It was originally developed from the battlefield mobile phone manufactured by Bell Laboratories in 1940.

Second, the mobile phone case

Mobile phone case, a coat designed and produced to protect mobile phones.

In the middle and late 1990s, with the opportunity of slimming mobile phones, mobile phone protective covers became popular, which also protected the development of mobile phones for aesthetic purposes.

Its types are also diversified with the increase of mobile phone brands and functions, including leather, silicone, cloth, hard plastic, soft plastic, velvet, silk and so on. , while the straight plate and flip cover are different due to different models.

Limited by the model, the applicable categories of mobile phone protective covers are also different.

Straight board can usually use all kinds of mobile phone cases, and sliding folding can only choose leather cases.