Originally Posted by mckinneycm
I DO NOT have a 'Tethering Plan' from AT&T and I'm able to tether with no issues what-so-ever.
A number of years ago, back when the 8700c first shipped, I switched to it just for the ability to tether via EDGE speed. Our AT&T account manager at the time said "Oh, no problem, as long as you have 'unlimited data' with your BlackBerry service, that includes tethering."
The next month, our corporate bill arrived and our business manager asked me, "Um, why were your AT&T charges $1200 last month?" Turns out that yes, tethering worked
fine, it's just that every bit of transferred data had a cost. That $1200 was just for one week of heavy tethering usage while I was out of town. Our AT&T account manager credited us the $1200 because he had told me the wrong thing, so that part worked out in the end, and we had to go ahead and add the 'tethering' option to my line: $30 per month.