[EC25-EC MiniPCIE] How do you lock LTE/4G only?


I’m preparing a radio certification and to reduce the time and costs (as I need only LTE for my usage), I want to block my Quectel EC25-EC to use only LTE and the following bands : 1/3/8/20/28.

Which AT commands should I use to be sure the EC25-EC will never fallback to 2G/3G and never try to use other bands ?

If you recommend some commands, are the settings permanent even after a reboot ?

Best regards


Hi Carton,

AT+QCFG=“nwscanmode”,3 //lock to LTE
AT+QCFG=“band”,0,8080085 //lock to band 1/3/8/20/28 only.
Settings are permanent after a reboot if you don’t change sim card.

Best Regards,

Hi Willie,

Thanks for your answer! It was helpful.

Best regards