Screen only displays static snow

I am currently on holiday in Thailand with my FP2. Worked fine in flight mode for internet and camera for 2 weeks but now only displays static snow on the screen. No trauma happened to phone, literally did it overnight and can now only turn it off by taking battery out. Thinking it may be the humid environment as the FP2 backing case isn’t very close fitting. Any ideas how to fix this / what is happening?

Thanks!

A post was merged into an existing topic: Noisy coloured pixels on my Fairphone 2