P20 Lite huawei after switching on the cell phone speaks to me - no what's app, no phone call possible, because the start page on the screen does not start?

P20 Lite huawei after switching on the cell phone speaks to me - no what's app, no phone call possible, because the start page on the screen does not start?

Have you already switched off and restarted completely?

How do you switch off "completely"

Hold down the lower button on the right for a longer period of time. Then, restart or shutdown appears. In that case I would switch off…

Then hold the lower right button longer to switch on, then log in again with your PIN