Modern smartphones are pocket computers that often feel like jacks of all trades, but masters of none. While you can use them for communications, photography, gaming, and much more, there are ways a phone could be better at each of those things if you added better camera lenses, bigger batteries, physical game controllers, or other hardware. But you probably don't need or want that hardware all the time.

Ulefone's RugOne Xsnap 7 Pro features a magnetic action camera that detaches for wearable use. Can modular phones finally succeed where Project Ara failed?