"Error 'AT' timed out".

[arunadtec]

I've just received a nRF9160 DK.

I've installed nRF Connect v3.6.1 and LTE Link Monitor.

I select the device (3 serial ports are shown). I press reset button and the terminal shows that the application is started.

I introduce AT, AT+CFUN? and AT+CFUN=1 commands but always receive the same message: "Error 'AT' timed out".

What's the problem?

[arunadtec]

HI,

I have checked with JIO Sim and Vodafone-Idea Sim , but both are not working.

Our main intention of buying this kit is to test MFF2 SIM , we have purchased a global sim for testing of the same. Please help 

Mouser No:	646-SIM-E-MFF2-GL
Mfr. No:	SIM-E-MFF2-GL-1000
Desc.:	SIM Cards SIM Cards eUICC MFF2 Global SIM

Arun

[Øyvind]

We have had customers who were able to connect the Jio Network. 

The asset tracker is trying to connect LTE-M network, did you try with NB-IoT? Recommend reading the documentation on the AT commands that the Asset Tracker returns i.e. +CEREG.

Please reprogram the device with a precompiled image from the precompiled FW package i.e. img_app_bl/nrf9160dk_asset_tracker_nbiot_2021-03-01_8e8c6089.hex

Or change XSYSTEMMODE to NB-IoT supported. Remember to set modem function to flight mode 

Kind regards,
Øyvind

[Hardik.Harpal]

Øyvind said:

Remember to set modem function to flight mode 

Kind regards,
Øyvind

Øyvind

That part, I did not understand why it is required and how to do it.

arunadtec did you find any success with JIO any findings in terms of changes required in Asset tracker example. 

My Case: 

devzone.nordicsemi.com/.../nb-iot-jio-sim-not-connecting-asset-tracker-work-up-to-rrc-connected-and-stuck-there