Mobile phone has been on and off for half an hour?

I have a Huawei phone which had worked great so far but for half an hour all of a sudden gin the phone off and it starts to the logo Huawei seems and then immediately goes out again and then it turns itself on again.

I do not get the phone off or on

what can I do?

Battery out, battery back in, fully charge, hire. Klappts? XD

You can't take out the battery

Oh yes, always these newer, "better" phones…

Then wait for the battery to go flat by itself. How full was it when it started?

100% 99%

Another method I just can't remember, sorry.

But wait so long now… And if it does not work then…

WHAT Huawei's cell phone? The info would be right important

Huawei y7 2019

Go to the BlingBling Shop of your confidence, there the battery can be replaced or just taken out and put back in again.

Has now switched off but when it starts it unfortunately starts again from the beginning

You can even look, if there's something in recovery mode: While the phone starts up, keep the volume down and down key pressed until it appears.