Questions about Apple iPhone 12 mini

SAR EU 0.99 W/kg (head) 0.99 W/kg (body) ( https://www.gsmarena.com/apple_iphone_12_mini-10510.php )

Unfortunately we don't have any more detailed information about the date yet. :(

Yes, every 5G smartphone can also be operated with 4G and 3G.

No, you will receive a brand new iPhone 12 mini in its original packaging. The word "showroom" only means that a sample is on display in the Digitec showrooms. But that's not the one they'll send you😉.

Of course. Every mobile phone with 5G also works without problems in the 4G and 3G networks. You can simply deactivate 5G on the iPhone in this case.