Cell Phone Accessories
Duplex Case grafts a second phone onto the back of an iPhone 6

Sometimes it would be handy to have a second smartphone on hand. That way, if one of them runs out of juice, the second device can be used to make an urgent phone call. But having two separate devices would be a hassle also because it would require a consumer to buy a second smartphone and then schlep both devices around.

Duplex is a case for the iPhone 6 that doubles as a second smartphone. Its back panel acts as a smartphone, complete with a display. Meanwhile, the case also charges the iPhone. The iPhone Duplex Case frame’s dimensions are 142.3 x 70.5 x 8.3mm, its main body thickness is 6mm, and its total weight is 74 grams.

Duplex ships in June. Future pricing isn’t available. But early bird Kickstarter backers can get one for a pledge starting at $49. Its makers have a modest goal of raising $5,000 by May 11. This is a device that many consumers may find handy. For now, the major obstacle is the fact that it is only for iPhone 6 users. But its makers are developing similar cases for other unspecified models.