Xiaomi Redmi K40 Game Premium Edition 5G Dual SIM TD-LTE CN 256GB M2104K10C (Xiaomi Ares) vs. BBK vivo Y21A 2021 4G Standard Edition Dual SIM TD-LTE IN 64GB V2149 (BBK V2149) Frequency Band Comparison

Comparison Criteria

Device 1

Device 2

Frequency Band Comparison

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Frequency Band	Xiaomi Redmi K40 Game Premium Edition 5G Dual SIM TD-LTE CN 256GB M2104K10C (Xiaomi Ares) View device details	BBK vivo Y21A 2021 4G Standard Edition Dual SIM TD-LTE IN 64GB V2149 (BBK V2149) View device details
GSM 850 MHz	Yes	Yes
GSM 900 MHz (E-GSM)	Yes	Yes
GSM 1800 MHz (DCS)	Yes	Yes
GSM 1900 MHz (PCS)	Yes	Yes
UMTS B1 (2100 MHz)	Yes	Yes
UMTS B2 (1900 MHz PCS)	Yes	No
UMTS B4 (1700/2100 MHz AWS 1)	Yes	No
UMTS B5 (850 MHz)	Yes	Yes
UMTS B6 (850 MHz Japan)	Yes	No
UMTS B8 (900 MHz GSM)	Yes	Yes
UMTS B19 (800 MHz Japan)	Yes	No
LTE B1 (2100 MHz)	Yes	Yes
LTE B2 (1900 MHz PCS)	Yes	No
LTE B3 (1800 MHz +)	Yes	Yes
LTE B4 (1700/2100 MHz AWS 1)	Yes	No
LTE B5 (850 MHz)	Yes	Yes
LTE B7 (2600 MHz)	Yes	No
LTE B8 (900 MHz)	Yes	Yes
LTE B18 (800 MHz Lower)	Yes	No
LTE B19 (800 MHz Upper)	Yes	No
LTE B26 (850 MHz +)	Yes	No
LTE B34 (TD 2000 MHz)	Yes	No
LTE B38 (TD 2600 MHz)	Yes	Yes
LTE B39 (TD 1900 MHz +)	Yes	No
LTE B40 (TD 2300 MHz)	Yes	Yes
LTE B41 (TD 2500 MHz)	Yes	Yes
LTE B42 (TD 3500 MHz)	Yes	No
CDMA BC0 (800 MHz)	Yes	No
5G NR N1 (2100 MHz)	Yes	No
5G NR N3 (1800 MHz)	Yes	No
5G NR N28 (700 MHz)	Yes	No
5G NR N41 (2500 MHz)	Yes	No
5G NR N77 (3700 MHz)	Yes	No
5G NR N78 (3500 MHz)	Yes	No