1. Cause of the fault: The reason for the squeaking sound may be that the motor and lens are loose, and the motor rubs against other components when moving. The focus motor achieves focus by moving the lens position back and forth. It is small in size and is a precision device.

When it malfunctions, it will result in the inability to focus accurately.

2. Fault manifestation: After this situation occurs, it can occasionally be in focus, but in most cases it can only be used as a fixed-focus camera. At this time, you can find a clearer picture by moving the position of the phone, which is the so-called "focusing basically depends on moving".

3. Solution: This fault cannot be repaired by individuals, and the only option is to replace the lens assembly. It is recommended to ask the mobile phone after-sales service. If the mobile phone is not within the warranty period, it should be replaced for free.

Extended information:

Lens classification:

Strictly speaking, CCD and COMS are both photosensitive devices in the digital camera module of mobile phones.

Among them, CCD is the English abbreviation of charge coupled device, and CMOS is the English abbreviation of additional metal oxide semiconductor device.

There are differences between the two in information reading methods, speed, energy consumption and imaging quality.

Relatively speaking, the overall performance of CCD as the photosensitive device on simple digital camera modules such as mobile phones is better than COMS, so under the same circumstances, CCD photosensitive devices should be chosen. camera phone.

For example, Sony Ericsson's latest flagship camera phone uses CCD as the 1.3-megapixel photosensitive device of the phone.

In addition, the size of the photosensitive device also plays a decisive impact on the imaging quality. For example, the Nokia 7650 uses a relatively large photosensitive device, so the photos taken perform better among similar mobile phones