Besides the other issues already mentioned by others, I also find a strange one.
If you stick your ear to the phone box, when the flap is closed and listen carefully, you will hear a really strange buzzing sound. What could it be?...Only when the flap is closed and light from the phone screen is off... Listen carefuly in a complete silence room!
One of my biggest problems is that writing messages on this phone is a way full of bugs and errors. They need to resolve somehow this very important complaints...At least the basic functions should work well.