First, thanks for the post and to all who have contributed since!

Adding… I had numerous problems getting sakis3g just right on my Pi, from crickets at to compliation problems. This post ( fixed all that.

But then I kept getting connection failures from within sakis3g. So, I scrolled back to the top and started over with a powered USB hub, rather than directly connecting my dongle to the Pi. That worked! Never underestimate the power of power. 🙂

But… introducing the hub sort of shot my mobile project in the foot. I was trying to use a relatively old AT&T USBConnect Quicksilver device that works great on my laptop. But I suspect that it something of a glutton. So, I’m wondering if anyone has found a “low-power” 3G/4G dongle that works off of Pi power?