The Apple Watch Series 4 Hermes 40mm TD-LTE NA A1975 (Apple Watch 4,3) supports 3 UMTS bands and 11 LTE bands. See the tables below for details.

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

  • 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 (14)


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