Small script to connect using the 3G/4G SIMcard with Lenovo (probably others) laptops

Edit the script and set your APN name and the device:

IFACE="wwp0s20u4";
APN="Movistar";

The usage is easy. Call the script (witout arguments, it offers help)

./lenovocon.sh <pin>|off

Connect:

./lenovocon.sh 1234

Disconnect:

./lenovocon.sh off

Sometimes the script is unable to find the device. It is a bug (probably kernel). In this case, close the LID, open it again, and call the script.

If you get this error, it is an dbus error, try it again:

error: couldn't connect the modem: 'GDBus.Error:org.freedesktop.ModemManager1.Error.Core.Retry: Too much time waiting to get to a final state'
Connecting error

Add the script to the $PATH

Comments/patches are welcome.