Questions about Sharp 55GP6260E

yes

I'm surprised myself that the apps work quickly and flawlessly.

This TV supports the 400x300 mm VESA standard. The following mounts are compatible: https://www.galaxus.de/de/s1/producttype/tv-wandhalterung-484?filter=841%3D194076

Yes, but you can find other models in black from this manufacturer here: https://www.galaxus.ch/de/s1/producttype/tv-4?filter=bra%3D435%2C10526%3D1915%7C1415&filterGrid=expanded

Yes, the Sharp TV 55GP6260E can be mounted on the wall. It is compatible with VESA wall mounts, but you need to ensure the mount is suitable for the TV's VESA pattern and weight. The specific VESA mounting dimensions and weight of the TV should be checked in the user manual or the manufacturer's specifications to choose the correct wall mount.

According to the supplier, the VESA standard is 400x300 mm.