Connect to a specific carrier instead of SIM card automatic carrier selection

Hi @ATW,

Thanks for the feedback on the board!

The MKRGSM lib currently does not have support for this feature, however I think it would be a valuable enhancement.

Looking at the Section 7.4 of the ublox AT command set, this feature seems possible.

Could you please open an issue on Github to track this enhancement request: Issues · arduino-libraries/MKRGSM · GitHub

Thanks.