Is there an AT command to force registration/ attach to a 5G NR cell

Question

I used to "force network attach" to LTE on my Android device using

at+cops=0,,,7

Is there an AT command for 5G NR?

Answer 1

According to ETSI Technical Specification 127 007, the AT command which is supposed to force the attach of a specific network is AT+WS46 (Select Wireless Network).

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Syntax

+WS46=[<n>]

where n defines the stack to be used by the device.

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Values of n

The values concerning 5G network, though introduced some years ago, have been undefined for a long time. They have finally been specified with ETSI TS 127 007 V15.5.0 (April 2019). Here is the link of the latest specification version, to date.

Here it is the full list of supported n values:

12 GSM Digital Cellular Systems (GERAN only)

22 UTRAN only

25 3GPP Systems (GERAN, UTRAN and E-UTRAN)

28 E-UTRAN only

29 GERAN and UTRAN

30 GERAN and E-UTRAN

31 UTRAN and E-UTRAN

35 GERAN, UTRAN, E-UTRAN and NG-RAN

36 NG-RAN only

37 NG-RAN and E-UTRAN

38 NG-RAN, E-UTRAN and UTRAN

39 NG-RAN, E-UTRAN and GERAN

40 NG-RAN and UTRAN

41 NG-RAN, UTRAN and GERAN

42 NG-RAN and GERAN

NG-RAN identifies 5G network

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TL;DR

In order to force 5G only network you have to provide

AT+WS46=36

Make sure your device supports it by issuing test command AT+WS46=?.