As Android Authority points out, there appears to be a bottom lip as well, which could be a removable piece to make room for different kind of accessories. That said, the publication says its sources haven't confirmed if the V20 is actually modular, so hold off on making any final judgements for now. Either way, we'll likely find out more details about the handset in the weeks leading to its official announcement.

Update: A reliable source informed us that the V20 won't be taking the same modular approach as the G5, which means that button on the right side of the phone is likely a camera button. Why else put it there instead of on the left like the G5's module eject button?