RAK7243 failed to configure LTE

I followed the “Connecting to an LTE Network” document but when trying to set at+cops I received the error - CME Error: 30

when trying “sudo pppd call gprs” received timeout on the config request -

What could help here?

"CME ERROR: 30" means "No network service".

Try the following steps

  1. Enter only one at command "at + cops=0" in minicom.
  2. Exit minicom and execute sudo pppd call gprs.

If you try several times without success, can you change to another sim card?

It was problem with the Sim card. Resolved.
Thanks ZhuQI !

Congratulations on solving it!
Hope RAK can give you more and better experience.