I was chatting with someone via Messages.app on my iPhone, and they sent me a message saying "call me in 20 minutes". I was away from my phone when they sent it, so I didn't know when they sent the message, and therefore didn't know when to call.
I know that Messages.app displays a start time for new conversations, but I just want to get the time of a specific message.
Tap-and-hold and double-tap on the message just give a "Copy" context item.
How can I see the time of an incoming message?