The nrf9160 modem reboots after sending the AT+CFUN=1 command

[dennisnguy]

Hi Everyone,

I'm using nrf9160 sip, mfw_nrf9160_1.3.7 modem firmware version, slm example, sdk v2.8.0.
When I include lte_auto_connect() function or manually configure the modem and send AT+CFUN=1, the nrf9160 reboots.

How can I fix the rebootiing issue?

Thank you in advance,

[dennisnguy]

It was an external power supply issue. The power supply did not provide enough current.