The 2015 Moto G could fall into the shallow end of a pool, remain there submerged for half an hour, and still keep on ticking. Well, unless the removable shell isn't properly secured.

Known for offering consumers customization options for its handsets, Motorola is offering 10 colors of shells for the backside of the third-generation Moto G.

One color is included with the Moto G, but those who want more than one option should be warned. If, after changing shells, the new shell doesn't fit flush with the handset, the Moto G's IPX7 waterproof certification means a little less, and submersion in liquid could damage the phone.

The third-generation Moto G is "designed to withstand immersion in up to 3 feet of fresh water for up to 30 minutes provided the back cover is properly sealed," stated Motorola. "Not designed to work while submerged underwater. Do not use while swimming, or subject it to pressurized streams of water. Not dustproof."

Apparently, the raised metallic strip, which covers the rear camera, is a potential stumbling block for Moto G owners looking to swap out shells. The shells have to be completely flush. There's a chance the area around that metallic strip could buckle, ever so slightly, allowing liquids to breach the Moto G's hull.

All that said, it's a good idea to examine the entire installation of a new shell. Any bulge or buckle could compromise a shell and subsequently the handset itself.

Though firmly in the mid tier, the $180 Moto G 2015's waterproof certification gives it an edge, at least in one category, over the latest pairs of flagship phones from Apple and Samsung.

"The new Moto G is ready to weather any storm with you, literally, thanks to IPX7-rated protection and Corning Gorilla Glass, so you're safe from accidental drops into water as well as unsightly scrapes and scratches on your display," said Motorola. "With an all-day battery, it won't ever bail on you when you need it most and it's ready to capture new memories with a flick of the wrist with a 13 megapixel camera."

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