Users will have the option to revert back to the SMS or MMS standard in case there is poor network, but they won’t be end-to-end encrypted.
RCS is definitely convenient, but aside from limited availability, one key area where it lags behind instant messaging services like WhatsApp and Telegram is support for end-to-encryption as a privacy measure. But it appears that the Google Messages app will soon enable end-to-end encryption for RCS messages.
