There's a standard 3.5 mm headphone socket on top, where you'll also find a small power switch and volume rocker is to be found on the phone's right side. (pocket-lint.com)
Both also cast off the 3.5 mm headphone socket in the process. (pocket-lint.com)
Even the otherwise poorly placed 3.5 mm headphone socket makes sense when in gaming orientation, as the headphone lead drops comfortably beneath the unit. (theregister.co.uk)