Apple has been avoiding the adoption of RCS messages ever since Google introduced the standard, but now iPhone users finally can use the service through a third-party app Beeper. The application aims to bundle all messaging systems under one roof, and its latest update added Google Messages to the iPhone. RCS is short for Rich Communication Services and brings features such as encryption, read and typing indications, which is Google's own solution for messages. Apple users have to enable the feat by downloading the latest version of Beeper Desktop and then heading to the settings...
Source: https://www.gsmarena.com/rcs_messages_finally_reach_iphones_with_a_thirdparty_app-news-59613.php
