Interesting. Good analysis @petemeister
The Mudita screen has an issue in the sun. I accept that as fact.
Mudita should include sunlight warnings are because the device might not function 100% properly and the users might think their device is defective and call support to complain for a refund.
never-leave-your-phone-in-the-sun
I am not going to risk my expensive Kompakt phone doing similar tests.