Samsung SM-G991U Galaxy S21 5G UW Dual SIM TD-LTE US 128GB / SM-G991T (Samsung Unbound M1) vs. Samsung SM-F731U Galaxy Z Flip 5 5G UW TD-LTE US 512GB / SM-F731T (Samsung B5) Frequency Band Comparison

Comparison Criteria

Device 1

Device 2

Frequency Band Comparison

Select a band for more details

Frequency Band	Samsung SM-G991U Galaxy S21 5G UW Dual SIM TD-LTE US 128GB / SM-G991T (Samsung Unbound M1) View device details	Samsung SM-F731U Galaxy Z Flip 5 5G UW TD-LTE US 512GB / SM-F731T (Samsung B5) 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	Yes
UMTS B4 (1700/2100 MHz AWS 1)	Yes	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)	Yes	Yes
LTE B3 (1800 MHz +)	Yes	Yes
LTE B4 (1700/2100 MHz AWS 1)	Yes	Yes
LTE B5 (850 MHz)	Yes	Yes
LTE B7 (2600 MHz)	Yes	Yes
LTE B8 (900 MHz)	Yes	Yes
LTE B12 (700 MHz ac)	Yes	Yes
LTE B13 (700 MHz c)	Yes	Yes
LTE B18 (800 MHz Lower)	Yes	Yes
LTE B19 (800 MHz Upper)	Yes	Yes
LTE B20 (800 MHz DD)	Yes	Yes
LTE B25 (1900 MHz +)	Yes	Yes
LTE B26 (850 MHz +)	Yes	Yes
LTE B28 (700 MHz APT)	Yes	Yes
LTE B38 (TD 2600 MHz)	Yes	Yes
LTE B39 (TD 1900 MHz +)	Yes	Yes
LTE B40 (TD 2300 MHz)	Yes	Yes
LTE B41 (TD 2500 MHz)	Yes	Yes
LTE B46 (TD 5900 MHz)	Yes	Yes
LTE B48 (TD 3600 MHz)	Yes	Yes
LTE B66 (1700/2100 MHz)	Yes	Yes
LTE B71 (600 MHz)	Yes	Yes
5G NR N25 (1900 MHz)	No	Yes
5G NR N41 (2500 MHz)	No	Yes
5G NR N66 (1700/2100 MHz)	No	Yes
5G NR N71 (600 MHz)	No	Yes
5G NR N257 (mmWave 28 GHz)	No	Yes
5G NR N258 (mmWave 26 GHz)	No	Yes
5G NR N260 (mmWave 39 GHz)	No	Yes
5G NR N261 (mmWave 28 GHz)	No	Yes