Yes, I’m old and I still really appreciate this form of communication because radio discipline …
It’s free and works on Android/iPhone/Windows. You can literally just push the “button” and start talking to people anywhere in the world with it.
My wife had no trouble responding to “Hey babe, you got a copy?”. She was like, “Can you hear me?”. I was like, “Solid copy”.
I’m more into Navy lingo…
Wife - “While you are out, can you pick up some milk?”
Me - “Pick up milk, Aye.”
(Yeah…I really do that…sigh)
Ah, the good old days of radio “discipline”.
“1 this is 2 radio check”
“Say again your last, coming in broken and stupid/slow/other NSFW insults”
And then come back with
“Roger, got you loud and queer”
Me and the wife used to use this when I was in the man cave! Great fun but it sort of fell out of use with whatsapp
I LOL’ed at that. Your fellow Marines sound like a bunch of dicks. 
JK JK
Listen to how polite these guys are …