There are a number of factors that can be caused by the fact that your iPhone camera screen keeps jumping, and here are some possible reasons and corresponding solutions:
Hardware issues: There might be a hardware glitch with your iPhone's camera or screen that is causing your camera to be unstable. At this time, you can try to restart the phone, if the problem persists, it is recommended to contact Apple's official after-sales service for repair or replacement.
Software issue: There may be a bug in the iOS system or camera app that causes the camera screen to jump. Try updating your iOS system to the latest version and check if there is a camera app update available. If you're still having trouble, you can try resetting all settings or erasing all data and setting up your phone again.
Environmental issues: When taking photos with your iPhone, unstable or dim ambient lighting can also cause the camera frame to jump. At this point, try moving to a well-lit area to take a photo, or use an auxiliary light source such as a flashlight.
Loose or damaged camera: If the internal components of the camera are loose or damaged, it can also cause the camera frame to jump. In this case, you need to disassemble the phone and check how well the camera is secured. If the camera is damaged, it needs to be repaired or replaced.
Static electricity: In some cases, static electricity can interfere with the camera on your iPhone, causing the camera to jump. At this point, you can try to eliminate static interference, such as placing your phone on an anti-static mat or using an anti-static bracelet.
In short, the problem of iPhone camera jumping needs to be troubled and dealt with according to the specific situation. If none of the above methods can solve the problem, it is recommended to contact Apple's official after-sales service or go to a professional mobile phone repair shop for testing and repair.