Google Messages allows any phone to get RCS, which has considerably improved its push. This is why it's often considered as a competitor to iMessage, Apple's proprietary messaging platform for iDevices, instead of a replacement. But it's an imperfect competitor, and recently, users have found some annoying issues that have either kept their Chat messages in an eternal limbo or straight out keeping them out of the platform.
About the first one.Read More
RCS functionality in Google's Messages app seems to be randomly breaking was written by the awesome team at Android Police.