They want to know how the app acts when a phone is in a low power state (because power profiles often kick in only then and that can meet to bad UX) Thus the in

They want to know how the app acts when a phone is in a low power state (because power profiles often kick in only then and that can meet to bad UX) Thus the intent seems to be: delivering put some users' phones into the state desired for tests (ie by draining their battery till they're at that level) and then commence the tests. In a lab it's all very clinical, but what if the test subject happens to be stalked at the time, desperately needs to make a phone call for help and then the device runs out of power at the critical point? That's obviously a made up, cherry picked example, but with large enough numbers you can expect that something like this would occur. What's odd to me is that they don't seem to have been comfortable just getting test results from users whose phone battery state is at the desired level naturally (there's no major ethical issue where you, the tester, haven't caused the low battery provided you're not subsequently taking battery down to zero)