ZTE ZMAX 5G TD-LTE US 64GB Z7540 (ZTE 7540) vs. BBK vivo Y21T 2021 4G Standard Edition Global Dual SIM TD-LTE V5 128GB V2135 (BBK V2135) Frequency Band Comparison

Comparison Criteria

Device 1

Device 2

Frequency Band Comparison

Select a band for more details

Frequency Band	ZTE ZMAX 5G TD-LTE US 64GB Z7540 (ZTE 7540) View device details	BBK vivo Y21T 2021 4G Standard Edition Global Dual SIM TD-LTE V5 128GB V2135 (BBK V2135) View device details
GSM 850 MHz	No	Yes
GSM 900 MHz (E-GSM)	No	Yes
GSM 1800 MHz (DCS)	No	Yes
UMTS B1 (2100 MHz)	No	Yes
UMTS B2 (1900 MHz PCS)	Yes	No
UMTS B4 (1700/2100 MHz AWS 1)	Yes	No
UMTS B5 (850 MHz)	Yes	Yes
UMTS B8 (900 MHz GSM)	No	Yes
LTE B1 (2100 MHz)	No	Yes
LTE B2 (1900 MHz PCS)	Yes	No
LTE B3 (1800 MHz +)	No	Yes
LTE B4 (1700/2100 MHz AWS 1)	Yes	No
LTE B5 (850 MHz)	Yes	Yes
LTE B7 (2600 MHz)	No	Yes
LTE B8 (900 MHz)	No	Yes
LTE B12 (700 MHz ac)	Yes	No
LTE B20 (800 MHz DD)	No	Yes
LTE B28 (700 MHz APT)	No	Yes
LTE B38 (TD 2600 MHz)	No	Yes
LTE B39 (TD 1900 MHz +)	No	Yes
LTE B40 (TD 2300 MHz)	No	Yes
LTE B41 (TD 2500 MHz)	Yes	Yes
LTE B66 (1700/2100 MHz)	Yes	No
LTE B71 (600 MHz)	Yes	No
5G NR N2 (1900 MHz)	Yes	No
5G NR N5 (850 MHz)	Yes	No
5G NR N25 (1900 MHz)	Yes	No
5G NR N40 (2300 MHz)	Yes	No
5G NR N66 (1700/2100 MHz)	Yes	No
5G NR N71 (600 MHz)	Yes	No