Oppo Realme X7 5G Premium Edition Dual SIM TD-LTE CN 128GB RMX2176 (BBK R2176) vs. BBK vivo Y21T 2021 4G Standard Edition Dual SIM TD-LTE V1 ID PK 128GB V2135 (BBK V2135) Frequency Band Comparison

Comparison Criteria

Device 1

Device 2

Frequency Band Comparison

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Frequency Band	Oppo Realme X7 5G Premium Edition Dual SIM TD-LTE CN 128GB RMX2176 (BBK R2176) View device details	BBK vivo Y21T 2021 4G Standard Edition Dual SIM TD-LTE V1 ID PK 128GB V2135 (BBK V2135) 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	No
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 B34 (TD 2000 MHz)	Yes	No
LTE B38 (TD 2600 MHz)	Yes	No
LTE B39 (TD 1900 MHz +)	Yes	No
LTE B40 (TD 2300 MHz)	Yes	Yes
LTE B41 (TD 2500 MHz)	Yes	No
LTE B66 (1700/2100 MHz)	Yes	No
CDMA BC0 (800 MHz)	Yes	No
5G NR N1 (2100 MHz)	Yes	No
5G NR N41 (2500 MHz)	Yes	No
5G NR N77 (3700 MHz)	Yes	No
5G NR N78 (3500 MHz)	Yes	No
5G NR N79 (4700 MHz)	Yes	No