Basic knowledge of mobile phone maintenance

Mobile phone is an indispensable communication and entertainment tool in our daily life, and it is inevitable that it will break down during use. So, what are the basic knowledge of mobile phone maintenance? The following is the basic knowledge of mobile phone maintenance that I have compiled for you. Welcome to refer to ~

Basic knowledge of mobile phone maintenance 1. Menu setting failed:

Strictly speaking, a menu setting fault is not a fault. For example, if the incoming call does not respond, it may be that the user has set the call forwarding function; Unable to make a call, perhaps the user has set the call restriction function; There is no sound on the phone, maybe the user turned down the volume, and so on. Novices are most likely to encounter such a situation, which requires maintenance personnel to understand the specific operation methods of various GSM mobile phones.

2. Use failed:

Generally, it refers to the failure caused by improper operation or adjustment error of users. The more common ones are as follows:

1. Mechanical damage: failure caused by excessive operating force or incorrect method, which leads to the rupture and deformation of mobile phone components and the deformation and desoldering of IC pins. In addition, the antenna is broken, the chassis is cracked, water enters, and the display screen is broken.

2. Improper use: The following are several failure cases of improper use. Touching the keys with the tips of nails when using the mobile phone keyboard will cause the keyboard to be bald or even fall off; Charging with inferior charger will damage the charging circuit inside the mobile phone and even cause an accident; Improper operation of the mobile phone menu makes some functions in a closed state, which leads to the abnormal use of the mobile phone; Incorrect password input leads to blind attempt after SIM card is locked, which leads to protective self-locking of SIM card.

3. Improper maintenance: The mobile phone is a very sophisticated high-tech electronic product, which should be used and stored in a dry and suitable temperature environment.

3. Quality failure:

Some parallel mobile phones are assembled and modified, and the quality is very poor. Some mobile phones are digital, but they don't meet the GSM standard, so they can't be used.