The problem with that claim is that it's verifiable – you could spend time reverse engineering apps from Google and/or looking at their outgoing traffic with a

The problem with that claim is that it's verifiable – you could spend time reverse engineering apps from Google and/or looking at their outgoing traffic with a proxy. And there quite a few people who do exactly that, yet no-one managed to find anything remotely like this. Do you have any other proof of this? If not I'd advise you not to blindly trust this (or any other) person.