Now, more than ever, manufacturers are exploring alternative ways to differentiate smartphones. One savior to the oversaturated smartphone market, that is rife with products with similar specifications, may come in the form of modularity. The promise of a modular phone, is an ability to adapt to a user's needs in the moment. Purchasing a smartphone is traditionally a long-term investment. What might perfectly address day-to-day use, however, could come up short under specific use cases.

LG put a lot on the line when they released the LG G5. The G5 purports to be a modular smartphone unlike any before it. The G5 doesn't sacrifice features in the name of modularity either. LG still packs in a MicroSD card slot, fingerprint reader, and removable battery on the G5...