The Samsung SM-F721U Galaxy Z Flip 4 5G UW TD-LTE US 128GB / SM-F721T (Samsung B4) supports 4 GSM bands, 5 UMTS bands, 24 LTE bands, and 5 5G NR bands. See the tables below for details.

This device accepts the following SIM types to connect to mobile networks:

  • e-SIM
  • Nano-SIM (4FF)

Run a cross-reference compatibility check of this device on a specific network and country using the following links:



Supported Frequency Bands (38)


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