Samsung SM-F721U Galaxy Z Flip 4 5G UW TD-LTE US 256GB / SM-F721T (Samsung B4) is compatible with 11 out of 17 bands on AT&T (United States). See the tables below for details.


Frequency Bands Used by AT&T (United States)

Select a band or interface for more details

LTE

Compatibility - 8 out of 11 bands supported
73%
Interface Name Supported by device?
LTE B2 (1900 MHz PCS) Yes
LTE B4 (1700/2100 MHz AWS 1) Yes
LTE B5 (850 MHz) Yes
LTE B12 (700 MHz ac) Yes
LTE B14 (700 MHz PS) Yes
LTE B17 (700 MHz bc) No
LTE B29 (700 MHz de) No
LTE B30 (2300 MHz WCS) No
LTE B46 (TD 5900 MHz) Yes
LTE B48 (TD 3600 MHz) Yes
LTE B66 (1700/2100 MHz) Yes

Supported LTE Protocols

Name Generation Supported by device?
LTE 4G No

5G NR

Compatibility - 3 out of 6 bands supported
50%
Interface Name Supported by device?
5G NR N2 (1900 MHz) No
5G NR N5 (850 MHz) No
5G NR N66 (1700/2100 MHz) Yes
5G NR N77 (3700 MHz) No
5G NR N260 (mmWave 39 GHz) Yes
5G NR N261 (mmWave 28 GHz) Yes

* A matching frequency band does not guarantee coverage. There may be additional network or device software restrictions that prevent a device from connecting on a certain frequency. Additionally, certain bands may only be available regionally within a country.

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