Variants and features

The Modem library comes in two variants, each with a specific feature set and support for a specific variant of the nRF91 Series firmware.

The cellular variant of the Modem library supports the nRF91 Series cellular firmware. The DECT PHY variant of the Modem library supports the nRF91 Series DECT NR+ PHY firmware.

The features of the nRF91 Series firmware that are common across firmware variants, are also common across Modem library variants, for example, SoC management, bootloader, AT commands, and others.

The table below shows which feature and API is supported in which Modem library variant:

Feature	API header	Cellular	DECT NR+ PHY
Modem SoC management	nrf_modem.h	Yes	Yes
Modem fault handling	nrf_modem.h	Yes	Yes
Modem traces	nrf_modem_trace.h	Yes	Yes
Modem bootloader	nrf_modem_bootloader.h	Yes	Yes
Delta firmware updates	nrf_modem_delta_dfu.h	Yes	Yes
Library logging	nrf_modem_os.h	Yes	Yes
AT commands	nrf_modem_at.h	Yes	Yes
DECT NR+ physical layer	nrf_modem_dect_phy.h	No	Yes
Networking sockets	nrf_socket.h	Yes	No
Global Navigation Satellite System	nrf_modem_gnss.h	Yes	No
SoftSIM	nrf_modem_softsim.h	Yes	No

Note

Although the Modem library AT interface is fully supported by both Modem library variants, the AT command set supported by the cellular and DECT NR+ PHY firmware is different.