I was in southern China for a couple weeks, using Google Translate to try to talk to locals sometimes. The voice-to-voice feature seemed useful and more approachable than asking someone to type on my phone. I'd often start by saying "Talk into the phone and it will translate."
This did not go well. People seemed bewildered, utterly unwilling to try it out. Some people already knew what I was doing but the rest seemed to think I was crazy. One or two tried taking the phone and holding it to their ear like they were going to have a normal phone conversation with someone far away.
I later found out that Google had translated my phrase as something like "There is a phone call for you."