AT&T does the same with grandfathered unlimited plans. When I first bought the plan and a phone I was able to tether unlimited. Now they want me to upgrade to a

AT&T does the same with grandfathered unlimited plans. When I first bought the plan and a phone I was able to tether unlimited. Now they want me to upgrade to a tether plan that only supports 5GB max and phones using stock software refuse to tether unless I do.