This is the same unit. However, an error was made in the manufacturer's number. This was passed on internally for correction. The price difference is due to the fact that two different suppliers are involved.

WiFi calling works and yes, both SIM cards are active at the same time, you don't have to switch anything.

The Xiaomi 11i unfortunately does not support wireless charging, but the Xaomi 11 would support up to 50 watts Qi Charging Wireless.

Not true of course, the 11i has a 6.67 inch screen, but is a cool phone :). I have reported the error.

Unfortunately, I cannot reconstruct this, but I suspect that it was an error. But now the price should be right again :).