 Sure. So quickly, RCS is this way to communicate between Android phones that iPhone hasn't supported. And on the iPhone, you've got your blue messages, iMessage, where you've got typing indicators and read receipts for whenever you send something and somebody reads it. These are popular on all chat platforms now. RCS is kind of an upgrade to the old text message system, where now you get typing indicators and read receipts, things like that, just between green messages. What would be green on your iPhone?