I was an iOS dev, now i am a mobile dev in general that performs due diligence and post diligence on companies mobile devs.
They dont even mention about carrying their dev mobiles around with them. AND its actually against a couple of ongoing NDAs in mobile gaming. So i call BS on your exception to rule.
Are you serious, you have never needed to test sensors (i.e. geolocation, accelerometers etc). These require you to get up and move