I am using a Hologram Dash to send some messages via SIM card, but I have some problems with the AT Commands.
Now, I am using Hologram Dash Passthrough code, founded in Examples.
But I can’t attach GPRS.
+CME ERROR: Service not subscribed
Can anyone help with this? Or had the same problem trying to do the same? (it activates a PDP context with the specified profile, using the current parameters)