The latest update just forced its way through, after restart the phone seems to be dead. The touchscreen doesnt work, the SIM is not recognised. If I cant login because the touchscreen doesnt work, I have no idea how to fix this. I have soft rebooted about 17 times now. I have removed the SIM slot, added new SIM, rebooted with and with the slot etc.
The phone was fine 2 min before and now *****... 
Hi @dr_gunni
You could try a hard reset however this would delete your information from the phone.
https://www.hardreset.info/devices/samsung/samsung-galaxy-a42-5g/
That or take it to a Samsung Service Centre however they'll most probably also attempt to flash the phone thus resetting it.
I wish you all the best.
