Apple has launched iOS 18, which supports RCS, although RCS Business Messaging (RBM) is not yet widely available. It is expected to become prevalent in the U.S. within months. As users adopt iOS 18, SMS and MMS usage will decline significantly, with predictions suggesting an 85-90% drop in P2P SMS by the end of 2025. However, many small businesses will likely take longer to transition to RBM, continuing to use A2P SMS. The migration to RBM will be gradual and must ensure that vulnerable populations remain connected until the transition is complete, requiring further consumer education on messaging security and spam.