Huawei solve mobile phone problem?

An acquaintance criticizes that his Huawei mobile jumps on one side of his own accord, thus behaving unstably. Can one counteract this "wrongdoing" with any attitude?

What do you mean by "jumping on one side, so behaving unstably"? You should explain that to me in more detail. It could be a malware.

In what use does the phone jump on what pages? Is it adware from a browser, or an app that directs it to certain pages?

Unfortunately, I do not know any more. My acquaintance puts it next to him, picks it up, or moves it like that and already the view on the phone has slipped somewhere else

He puts it down and jumps to any other page. Unfortunately, I do not know. It bothers my acquaintance so much that he is considering buying another phone

I still do not understand it, what view?

http://www.huawei-info.de/verborgene-schaetze-in-emui-5?showall=&start=1

https://curved.de/tipps/display-vom-android-smartphone-aktiviert-sich-von-selbst-das-koennt-ihr-tun-482277

Thank you for the time being. I will "crash" on your link tomorrow

I would just advise him times to reset the phone, make a backup before, and then that should definitely not be the problem anymore.