Samsung SM-G998W Galaxy S21 Ultra 5G Dual SIM TD-LTE CA 256GB (Samsung Unbound O3) vs. Samsung SM-A556J Galaxy A55 5G 2024 Standard Edition TD-LTE JP 128GB SCG27 (Samsung A556) Frequency Band Comparison

Comparison Criteria

Device 1

Device 2

Frequency Band Comparison

Select a band for more details

Frequency Band	Samsung SM-G998W Galaxy S21 Ultra 5G Dual SIM TD-LTE CA 256GB (Samsung Unbound O3) View device details	Samsung SM-A556J Galaxy A55 5G 2024 Standard Edition TD-LTE JP 128GB SCG27 (Samsung A556) 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 B8 (900 MHz GSM)	Yes	No
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	No
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	No
LTE B18 (800 MHz Lower)	Yes	Yes
LTE B19 (800 MHz Upper)	Yes	Yes
LTE B20 (800 MHz DD)	Yes	No
LTE B25 (1900 MHz +)	Yes	Yes
LTE B26 (850 MHz +)	No	Yes
LTE B28 (700 MHz APT)	No	Yes
LTE B29 (700 MHz de)	Yes	No
LTE B30 (2300 MHz WCS)	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 B46 (TD 5900 MHz)	Yes	No
LTE B66 (1700/2100 MHz)	Yes	No
LTE B71 (600 MHz)	Yes	No
5G NR N8 (900 MHz)	No	Yes
5G NR N28 (700 MHz)	No	Yes
5G NR N41 (2500 MHz)	No	Yes
5G NR N77 (3700 MHz)	No	Yes
5G NR N78 (3500 MHz)	No	Yes
5G NR N79 (4700 MHz)	No	Yes