During its 7.0 Un-carrier event today, T-Mobile announced plans for its new 'Wi-Fi Unleashed' initiative. As part of the campaign, the carrier says that it will support Wi-Fi calling and texting on all new smartphones, including the just-announced iPhone 6 and 6 Plus.
This allows users to send and receive both calls and text messages over a Wi-Fi network, and is a highly sought after feature for folks in areas with poor cell service. T-Mobile says the feature will be free, and is offering upgrades to customers that don't have Wi-Fi devices.