Hello, just wondering if Swisscom supports Xiaomi devices.
"Unlocked cellphones are compatible with most of the GSM carriers ( Like T-Mobile or AT&T ) but please be aware that are not compatible with CDMA carriers ( Like Sprint or Verizon Wireless for example ) - FCC ID: 2AFZZG7G"
Should work just fine. A colleague of mine also had a Xiaomi and it harmonised with Swisscom like any other device.
I rather think this information refers to the US trade dispute with China - because then some providers are against letting "unsafe smartphones" into the network. (Which is not true. The devices should run cleanly in Switzerland and the EU and are usable with SIM-Unlock without any restrictions).