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The $100 Gamevice turns your iPhone 6, 6S, 6 Plus or 6S Plus into a handheld game console of sorts, adding physical buttons and joysticks.
It's a pair of grips that wrap around your phone thanks to a stretchy band in back.
Here's how you put the Gamevice on your phone. You stretch the left grip around the left edge of the handset.
There's a little slider in the back of the Gamevice that allows you to set it for smaller (6, 6S) or larger (6 Plus, 6S Plus) sized iPhones.
Each grip has an analog stick, and a bumper and trigger under your index finger. The right grip also has four nice springy A, B, X, Y face buttons, and a pause button. Underneath are a headphone jack and Micro-USB port that can charge your phone.
The left grip has a four-way directional pad for movement, instead of the face buttons.
The analog sticks are a low point: they're pretty tiny, with fairly weak action, and rough edges that can dig into your thumbs. They work, though.
I found the physical controls particularly useful for dogfighting and first-person shooting games.
Here are the shoulder buttons and triggers around back.
Big cinematic games like Final Fantasy VII can look pretty great when your hands aren't blocking the screen.
Here's a screen size comparison between the iPhone 6S and iPhone 6 Plus.
A closer look at the left grip, with its D-pad and battery button.
One last shot of the Gamevice with an iPhone 6 Plus.