Google to ditch SMS support in Hangouts for Android effective May 2221
However, this time Google has decided to ditch one of the features that made Hangouts a multipurpose messaging app. Although Google has yet to confirm the information, it appears that SMS support will be removed from Hangouts for Android.
Google had sent emails to G Suite administrators warning them that a message will appear to Hangouts users starting March 27, which will confirm SMS support will be completely removed from the Android app on May 22.
It appears though that Google Voice numbers will continue to be supported after May 22, as the change will only affect SMS messages sent and received from carrier phone numbers.
Starting March 27, Hangouts users on Android will be prompted to choose another default messaging application that's already installed on their smartphones. If none are available, then they will be immediately redirected to Google Play store to find another SMS messaging app they can use.