Yeap , I have seen this also.
the 10.2 update killed this feature,
Message link previews are broken and only
disply the safari icon w/url.....
sadly i have found no fix yet ......
Is this still an issue? It seems like the rich SMS preview does not work when message is from uknown sender on iphone but it appears to work OK on the IPAD. I would love some insight on the rich SMS hyperlink preview. It seems to inconsistently work or perhaps the blocking of the rich SMS hyperlink preview from unknown senders is a feature?