when telapathy fails and we have to resort to smoke signals

So he wants to sell it to me for 300$, but on eBay I found it for between 240 and 290$. I've already configured it quite a bit for me, but maybe there is a way to quickly factory reset it. Yes, there is, I just found it, though I haven't done it.

I've taken quite a few photos with the device and will move those over to somewhere else, to be sure they aren't lost. Move succeeded and now reset of device succeeded.

Still don't know if I'll actually keep it, but now it is ready to be returned to him if I don't.

Oh, I haven't mentioned, it is an LG G Pro 2 mobile device.