Network bands:Supports 4G / 3G4G: FDD-LTE Band B1/B3/B5/B7/B8/B20/B284G: TDD-LTE Band B38/B40/B413G: WCDMA Band 1,5,8*The independent call function is only available for LTE versions and requires an eligible Android 8.0 and above smartphone device with a separate qualifying wireless plan. The independent call function is available through operators’ eSIM twinning or independent number service. Check with your operator for tariff details and to see whether they support eSIMs.
*The eSIM network connection will be turned off when paired with a mobile phone through Bluetooth in order to save the power. The SMS service can be used when the watch and mobile phone are connected via Bluetooth, or when both are connected to the Internet. For more usage information, seehttps://www.mi.com/global/support/esim?lang=en-001&tag=xiaomi-watch-2-pro