Yes, there are no restrictions, the smartphone can be used everywhere, even abroad.

Look here: https://esimradar.com/de/esim-installieren/ Digitec also has esim, they should also be able to answer this.

The Samsung Galaxy S22 series does not have expandable memory because none of the Galaxy S22 models, mixed or not, have a microSD card slot. There is no way to expand the storage capacity of the Galaxy S22 after you have purchased it.

Chaque S22 devrait avoir la fonction Embedded sim (eSim). Pour l'activer, je vous suggère de consulter ce lien https://www.samsung.com/latin_en/support/mobile-devices/how-to-install-nano-sim-card-and-esim-on-the-galaxy-s22-series/he.

There are no purely Swiss versions, which would be far too costly for the manufacturers. Since no power supply unit is supplied anyway, it doesn't really matter whether it says EU or CH on it.

The sales start is scheduled for 25.2.2022. Delivery should probably take place during the sales launch week (without guarantee).