Samsung SM-F721C Galaxy Z Flip 4 5G UW TD-LTE JP 128GB (Samsung B4) vs. BBK vivo Y21T 2021 4G Standard Edition Dual SIM TD-LTE V4 MY TH PH 128GB V2135 (BBK V2135) Frequency Band Comparison

Comparison Criteria

Device 1

Device 2

Frequency Band Comparison

Select a band for more details

Frequency Band	Samsung SM-F721C Galaxy Z Flip 4 5G UW TD-LTE JP 128GB (Samsung B4) View device details	BBK vivo Y21T 2021 4G Standard Edition Dual SIM TD-LTE V4 MY TH PH 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 B5 (850 MHz)	Yes	Yes
UMTS B8 (900 MHz GSM)	No	Yes
LTE B1 (2100 MHz)	Yes	Yes
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 B12 (700 MHz ac)	Yes	No
LTE B13 (700 MHz c)	Yes	No
LTE B18 (800 MHz Lower)	Yes	No
LTE B19 (800 MHz Upper)	Yes	No
LTE B20 (800 MHz DD)	Yes	No
LTE B21 (1500 MHz Upper)	Yes	No
LTE B26 (850 MHz +)	Yes	No
LTE B28 (700 MHz APT)	Yes	Yes
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
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
5G NR N79 (4700 MHz)	Yes	No
5G NR N257 (mmWave 28 GHz)	Yes	No