Google has teamed up with AT&T to bring RCS to all Android devices on the carrier's network in the US. As a part of the partnership, all Android devices on AT&T's network will also ship with the Google Messages app as the default messaging client. Google has been trying to push RCS as a popular alternative to iMessage for Android users in the US. While WhatsApp, Telegram, and other messaging apps are wildly popular in other parts of the world, iMessage and regular text messages dominate the messaging scene in the US. T-Mobile and AT&T Both Ship Their Android Devices With Messages App T-Mobile was the first major US carrier to enter into a partnership with Google in March this year to support RCS and ship all Android devices on its network with Google Messages as the default messaging app. AT&T has also supported RCS on its network for a long time, but its implementation was not interoperable. With the carrier now joining hands with Google, AT&T su...