iOS is usually pretty good about automatically detecting phone numbers, whether it's in a Web page or a note or an email. But sometimes the software gets tripped up. That's when I take off my thinking cap—who can remember seven digits anymore?—and put the clipboard to work.
Just long press on the screen around the number you want to dial, then hit Select. Drag the posts to select the number, then open the Phone app. Now long press toward the screen once more and tap Paste. You're all set!
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