I'm playing a game where it will be helpful to hold down a button for an extended period of time. I didn't have a stylus, so I looked online for any ideas. Lots of people said to use the negative end of an AA battery. It works, but only when you're touching the battery. So I tried the positive end of the battery on my phone's touch screen, and it works (even when I'm not touching the battery). I haven't seen anything online about this, which I found very unusual.

So my question is, will it damage my phone if I use the positive end of an AA battery on my phone screen?