AT&T will let you make unlimited calls to any mobile phone on any network for free, as long as you are already have unlimited messaging ($20 for individuals, $30 for FamilyTalk plans) and are in a qualifying voice plan. After enrolling in Mobile to Any Mobile Calling, dialing another cellphone won’t use up your minutes. Coming on the same day that the Verizon iPhone goes on sale, it looks like AT&T is making a play to try to keep budget-conscious customers from exiting. More info at att.com/anymobile. [More]
