Quick answer: Sent as SMS means your message left as a standard carrier text rather than as iMessage or RCS. Your phone tried the internet-based route first, could not use it, and fell back so the message still arrived. It was delivered.
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Contact usQuick answer: Sent as SMS means your message left as a standard carrier text rather than as iMessage or RCS. Your phone tried the internet-based route first, could not use it, and fell back so the message still arrived. It was delivered.