The DualShock 4 is compatible with pretty much everything you attach it to, including smartphones, but holding the controller and your favorite phone together may be a little awkward.
The Japanese manufacturer Spec Computer decided to help that situation, and just released a contraption that securely attaches the smartphone on top of the DualShock 4, letting you use one of the best controllers in the market to bypass those awful touch controls.
The attachment is performed through nine suction cups, which means it can work pretty much with any model (and even if it’s not publicized, it probably works with a PS Vita as well, which is what I’m very tempted to buy it for). The attaching arm can also be locked at 90° , 120°, 150° and 180° angles.
At the moment it’s available only in Japan (it can be found on the local branch of Amazon for 2,160 yen, which is about 21 bucks). Below you can see a batch of pictures and a trailer showing how it works.