Originally Posted by hdawg
IIRC, you can add on tethering, and then take it off and you only pay for the days it was on your plan. It isn't considered a change in plan as you're only changing a feature. ... so at $15/mo, you're at $.50 for the day (and the time for your call)
not sure how this works for the CDMA carriers. my device has 0 minutes but unlimited tethering. I know on GSM you dial through the mobile network, but the CDMA phones go into their modem mode.