Help for Android. Bet AAPL Gets There First

Your on a call - with customer service - and, after 5 minutes of waiting, you're talking to someone.

Now, he puts you on hold to check something, so you go back to speaker and put the phone down so you can lean back.

What should the UI do?

If you now press the hang-up button, it should ask you to confirm. Yes! Because you might press the hang-up button accidentally!! And you don't want to call support again!!