I suppose using a mobile would drain the battery (I have no experience with a mobile use of Honeygain: my main device is always a notebook or netbook). And the price of a new battery plus the maintenance job is very much more than Honeygain's rewards. Not worth the effort, unless we use a computer owning medium to high features.I stopped doing activities on HneyGain. It drained my gadgets. The pay is peanut and it is a waste of time and energy. I uninstalled the app on my mobile phone laptop and netbook.