After seeing recent posts that AT&T are sending messages to low data usage people, I'm deleting my tethering apps. I hardly used the tethering apps anyway, but I just had it for a quick connect if wifi isn't available... or if my personal hotspot mifi device was out of battery power. Since I upgraded my Verizon 2200 mifi to the 4G LTE personal hotspot mifi, I rather use that over tethering anyway. I don't want to take a chance of losing my unlimited data over a few minutes of tethering.