BBK Vivo Y21s 2021 Premium Edition Dual SIM TD-LTE VN V3 V2110 (BBK V2109) vs. Apple Watch Series 8 45mm Hermes TD-LTE NA A2774 (Apple Watch 6,17) Frequency Band Comparison

Comparison Criteria

Device 1

Device 2

Frequency Band Comparison

Select a band for more details

Frequency Band	BBK Vivo Y21s 2021 Premium Edition Dual SIM TD-LTE VN V3 V2110 (BBK V2109) View device details	Apple Watch Series 8 45mm Hermes TD-LTE NA A2774 (Apple Watch 6,17) View device details
GSM 850 MHz	Yes	No
GSM 900 MHz (E-GSM)	Yes	No
GSM 1800 MHz (DCS)	Yes	No
GSM 1900 MHz (PCS)	Yes	No
UMTS B1 (2100 MHz)	Yes	Yes
UMTS B2 (1900 MHz PCS)	No	Yes
UMTS B4 (1700/2100 MHz AWS 1)	No	Yes
UMTS B5 (850 MHz)	Yes	Yes
UMTS B8 (900 MHz GSM)	Yes	Yes
LTE B1 (2100 MHz)	Yes	Yes
LTE B2 (1900 MHz PCS)	No	Yes
LTE B3 (1800 MHz +)	Yes	Yes
LTE B4 (1700/2100 MHz AWS 1)	No	Yes
LTE B5 (850 MHz)	Yes	Yes
LTE B7 (2600 MHz)	Yes	Yes
LTE B8 (900 MHz)	Yes	No
LTE B12 (700 MHz ac)	No	Yes
LTE B13 (700 MHz c)	No	Yes
LTE B14 (700 MHz PS)	No	Yes
LTE B17 (700 MHz bc)	No	Yes
LTE B18 (800 MHz Lower)	No	Yes
LTE B19 (800 MHz Upper)	No	Yes
LTE B20 (800 MHz DD)	Yes	No
LTE B25 (1900 MHz +)	No	Yes
LTE B26 (850 MHz +)	No	Yes
LTE B38 (TD 2600 MHz)	Yes	No
LTE B39 (TD 1900 MHz +)	Yes	Yes
LTE B40 (TD 2300 MHz)	Yes	Yes
LTE B41 (TD 2500 MHz)	Yes	Yes
LTE B66 (1700/2100 MHz)	No	Yes