SMS support in Hangouts on Android will end on May
If you use Hangouts more often than anybody, you might miss a feature that integrates the app with your phone’s native SMS feature.
Google will pull the plug on the SMS support in Hangouts for Android on May 22. According to a post by Android Police, G Suite administrators received an email from Google stating that a warning will appear to Hangouts users starting March 27 with the feature completely gone by May.
Source: Android Police