Well my old Sony Ericson w810 had this option, actually for both either SMS or mms. And it does come in handy sometimes...and that phone was 3 years old from AT&T so it's def capable.
In easy way this can be accomplished it at least being able to go into message details and seeing when it was delivered...like a time stamp...that was also available on my old phone.
So yes, I agree with OP, Apple is sorta behind times...but what's new!
You gotta be kidding me. Apple is behind the times?
Since they leave off some obscure feature that 2% of users ever even use. How was the web browsing, music and application experience on your ericson hunk of crud?