Such issues can be fixed easily by using any one of the following methods. In some cases, some internal system issues can also result in automatic scrolling problems in iPhone. Similarly, it is also possible that you may have dropped your iPhone from a good height that could have disturbed its display seating. Usually, a damaged pin could have caused a fault in your phone's display.
The most common cause is faulty display or phone assembly. Several reasons may make your iPhone automatically scrolling up. Particularly when you are reading some important conversation and your iPhone screen jumps to the top. It is quite distressing because it hinders users from using their iPhones freely. Have you ever notice that iPhone 8 screen jumping when scrolling? The issue has also appeared on iPhone 12/11. Other 4 Common Ways to Fix iPhone Screen Jumping When Scrolling Why Does iPhone Screen Keep Scrolling Up on Its Own?