search

Xinyuan-LilyGO / LilyGO-T-SIM7000G

LilyGO T-SIM7000G
https://pt.aliexpress.com/item/4000542688096.html
297 stars 129 forks source link

Failed Register to Network in Board 20200415 Version, but Successfully in 20191227 Version #70

Closed nazmibojan closed 3 years ago

nazmibojan commented 4 years ago

Hi,

I'm Nazmi and have been purchased two different version of LilyGO-T-SIM7000G board. In 20191227 version, my SIM card can easily registered to network after initialize. It was indicated by NETLIGHT status that was blinking every 3 seconds. But, in 20200415 version, my SIM Card could not register to network. NETLIGHT status always blinkiing every 800ms. If I run AllModemTest example I always got this:

image

I have set networkMode to 13, which is GSM only. I also changed APN data to my operator's APN. My SIM card operator use 900MHz band for their 2G network. Please give any insight for solving my problem. Thank you.

Regards, Nazmi

jupiter8888 commented 4 years ago

One thing you can try is writng the apn manually with the AT commant sketch. the command is: AT+CGDCONT=1,"IP","YOURAPN" do that with each PDP context, i noticed there is context 13 active also, so it will be: AT+CGDCONT=13,"IP","YOURAPN" after check with AT+CGDCONT?

lewisxhe commented 3 years ago

You can check whether the two boards use the same options AT+CNMP=? Return to current mode AT+CNMP=2 set to automatic mode

nazmibojan commented 3 years ago

Hi,

Thanks All for your sugestion. But the problem is regulation in my country. Some new regulations have been launched in September about IMEI validation. I bought LilyGo from China without register its IMEI to related minister information system. So, it made my LilyGo couldn't register to LTE network.

Regards, Nazmi