Place for LTE module

[wowatatarin]

It would be fun, to add gpio header from rpi set up to plug LTE module like this:
Simcom A7670E
Or this
Simcom A7670C which seem to be smaller
Or some similar one
They need just serial and two outputs to control power and sleep, which is optional, but possible.

Of course, this module does not allow for any high data transwers, but it would make beepy independent in from wifi, or even allow for voice calls and use gps.

[Obibi]

I would be interested in commissioning this change.