How to solve camera lag on Xiaomi Mi 9?

If you encounter slow response when opening the camera on your phone, slow taking pictures, lag when opening the camera, or a long wait for content to appear in the viewfinder, you first need to confirm whether the lag is "starting lag" or "using a medium card" "Paton", the performance of these two faults is different.

1. Stuttering at startup: A common symptom is that after opening the system camera app, the viewfinder frame remains black for 3 seconds or more, and it takes longer to wait for the camera screen to appear in the viewfinder frame.

In most cases, the camera app cannot respond to the operation until the content appears in the viewfinder. Whether it is taking a photo, switching cameras, or switching photo modes, the response is very slow and only responds to the operation after a period of time. It is recommended to use the following methods to troubleshoot:

1. First, you need to confirm how many seconds it takes from clicking the camera app to when the picture in the viewfinder appears. Since the cache space of the camera app is occupied by other applications in some cases, it may occasionally open the camera function after not using it for a long time, and it needs to wait for about 1 second to load. This kind of problem is more likely to occur when opening the camera when there are many applications in the background. If this problem occurs only occasionally and does not last longer than 3 seconds, it is normal.

2. It is recommended to clear all background applications and then open the camera to test whether the problem can be solved; if there is still a problem after clearing all background applications and then opening it again, it is recommended to restart the phone and open the camera directly to try;

3 . Try clearing the Camera App application data to see if the problem can be solved;

4. If none of the above can solve the problem, it is recommended to go to the Xiaomi Authorized Service Center for inspection and processing.

2. Stuttering during use: A common symptom is lag when using the camera after it is turned on. For example, when moving the phone, the viewfinder screen responds slowly and has serious smear; after clicking the camera shutter button, it takes a long time (1- 3 seconds or even longer) before taking the photo, etc.; it is recommended to troubleshoot through the following methods:

1. First confirm whether lag occurs every time. What needs to be paid attention to is some modes of the camera (AI scene Camera, HDR mode, group photo selection, beauty mode, portrait mode, magic mirror, smart object recognition, age detection) Since the amount of calculation is more than in the normal state, the time required for taking photos will increase to a certain extent depending on the amount of calculation; especially It is HDR mode, AI scene camera, and group photo optimization. Due to the large amount of calculation, the image processing time may be delayed by about 1 second after clicking the shutter button. At this time, the performance requirements of the camera App are relatively high. For example, if you open the camera when there are many applications in the background, such problems are more likely to occur. If this problem only occurs once in a while and does not last longer than 3 seconds, it is normal.

2. You can turn off various modes of the camera and only take pictures in the normal camera state to see if there are still lags and high delays. In addition, clear all background applications and then open the camera to test whether it can solve the problem; if you clear all background applications and then open it, there is still a problem when taking pictures in normal mode. It is recommended to restart the phone and directly open the camera to try;

3. Try to open the camera in the camera Settings>>More Apps>>Clear application data in the camera to see if the problem can be solved;

4. If the problem still exists after the above operations, you can submit feedback in the User Feedback App, and the module selection is: Camera > Others, and then describe the problem encountered in as much detail as possible. Engineers will gradually optimize the camera in subsequent system updates based on the logs you provide. If the problem is still not solved after subsequent updates to the latest version, it is recommended to go to a Xiaomi authorized service center to check the phone.