I got a complete new side of the problem.
Since I needed the flight mode I got the eye on a new Problem. On every reboot after wakeup the clock has a random time and date between 01.01.1970 an 13.01.1970. without the Flight-mode I only get some time certificate errors with the strange year of 1970. That wasn’t really a problem until flight-mode because of the network time the phone get.
The reboot because of a pressure never again appear since I removed the display temporary to show other the repairing ability. At moment I’m able to live with the 1970 error. It’s not that I need the flight-mode together with a reboot very often