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Samsung joins Google in RCS shaming Apple
(www.theverge.com)
This is a most excellent place for technology news and articles.
Technically, yes SMS doesn't support reactions. But you can do what Google does and just parse that text and "turn" it into a reaction for viewing purposes.
If an iPhone user sends me a reaction it looks fine to me, but funnily enough now when I send one back it looks the exact way Apple sends it to non Apple devices.