Fairphone 3 with E/OS going in and out of connection with 4G+ all the time after update

Fairphone 3 with E/OS going in and out of connection with 4G+ all the time after latest update.
It switches between showing no 4G icon at the top of the screen and no connection.
or 4G icon but also no connection. Only when it says 4G+ it has connection.

Help urgently needed cause this is the only phone I got and I can’t use it this way.
1.10-s-20230412278810-stable-FP3

Thank you

I don´t have this problem right now but had it before in an older version.
I believe I did solve it with:

Settings - System - Options for resetting (bottom) - Wifi, mobile data & bluetooth reset

And of course a restart.

Closing due to duplication