[Groxx]

(I have no information and thus no opinion on this being a thing that happens but)

constantly keeping the cell antenna and CPU awake would probably do it. it's a BIG part of why weak cell signal and lots of noise at e.g. conventions drains your phone many times faster than normal, even when you're not using it. you could probably do that just by sending junk data to everyone occasionally, or delaying valid data to prevent going into sleep modes for longer periods.