A Google SVP in a tweet Thursday extended an “open invitation” to assist Apple should it choose to support Rich Communication Services (RCS), which is primed to succeed SMS as the next mobile-to-mobile text standard. The “Really Clear Solution” reference is a nod to RCS, while the “open invitation” offer is obviously pointed at Apple, which has yet to commit to supporting the standard. RCS is well on its way to becoming Android’s default text messaging system. Google brokered deals with major U.S. carriers T-Mobile, AT&T and, most recently, Verizon, to preinstall the Messages by Google app on all Android devices sold on their respective networks. RCS nets Android users features like typing indicators, read receipts, end-to-end encryption, Wi-Fi texting, dynamic group chats and more, niceties that have long been enjoyed by Apple device owners. Unfortunately, RCS is not compatible with Apple’s proprietary messaging system, meaning texts sent between Android and iOS devices switch back to an SMS backbone. Apple could be cajoled into adding support for RCS as more carriers adopt the standard, but for now it appears that the iPhone maker is content with blue bubble/green bubble conversations.