If your  Galaxy  phone still relies on Samsung Messages for everyday texting, its days are numbered. Samsung has confirmed it will retire its long-running messaging app  in July , ending support for SMS, MMS and RCS across the US. The shift has been a long time coming. Google Messages has been the default on new Galaxy devices since 2024. But for holdouts, the looming shutdown means it's time to act before your texts and chat history are stuck in limbo. On a page with information about the switch , Samsung points to instructions on how to swap over to Google's Messages app, including for phones that are still on Android 12 and Android 13. Samsung has historically included its own Messages app on Galaxy phones, but began transitioning toward Google Messages as early as 2021 .…