Well, he does use it. I mean, if I try it and it works, is that bad? I can always ditch it. Although, I do trust you (probably more).
I am gonna test it out, compared to my wife's phone at rest for 30 minutes. If mine drains way more, I am gonna go there tomorrow and demand a new battery.
The dude already told me that at rest, it should only go down to about 90% after an hour, with the WiFi turned off.