To my knowledge you don’t. But SMS messages natively only use 7-bit ASCII. Sending emojis requires both carrier and device/OS support, because it’s impossible t

To my knowledge you don’t. But SMS messages natively only use 7-bit ASCII. Sending emojis requires both carrier and device/OS support, because it’s impossible to represent an emoji using pure 7-bit ASCII. As an aside, Unicode SMS messages fit far fewer characters per message (around 70 as opposed to 160), so most mobile devices still default to 7-bit ASCII unless the message can’t be represented as such.