I misplaced one of my phones. I then accidently took it "offline" and cannot use the "find my iphone" sound check to locate it. Can I still get it to alarm?

FMIPA wrote:

One of my devices is offline and I need to locate it. How can I get it to sound the alert?

without "find my phone" you can't play the sound.

The only thing you can do in this case is look for it the old fashioned way or call it and hopes someone answers.