How to obtain APN and SIM Identifier from GSM Board

Question

I have been reading and rereading the GSM Board site, and trying the sample codes on the Arduino IDE. I couldn't find how to get the default APN and SIM identrifier on the card.

Q: How does one obtain the default APN (Access Point Name) and the SIM identifier information from the SIM card?

Answer 1

APN: You have to provide APN to your board externally depending on your service provider.

How to get Service provider name from SIM card?

Use AT+CSPN command to get Service provider name.

Answer 2

GNOME maintains a XML database of service providers and their APN settings: https://gitlab.gnome.org/GNOME/mobile-broadband-provider-info

There's also the Android APNs database, which is similar: https://android.googlesource.com/device/sample/+/master/etc/apns-full-conf.xml

Answer 3

You can put the SIM card in your phone, go to settings and find the default APN.

On iOS: View and edit your APN settings

On Android: https://www.androidcentral.com/what-apn-and-how-do-i-change-it