Get a front-facing flash on your current iPhone
There is no need to wait for an iPhone 6S to get a front-facing flash for selfies. There's a free app that provides such a thing right now.
There are two likely suspects if you find your selfies lacking: your face or your phone. Let's assume it's the latter. With a low-resolution camera and no flash, it can be a challenge to snap the perfect selfie shot. To aid this important, time-consuming endeavor, Apple has improved the front-facing camera on the iPhone 6S , which will boast more megapixels and a flash by lighting up the screen.
If you do not harbor immediate plans to upgrade to the iPhone 6S, you can still up your selfie game now with Selfshot, a free and universal iOS app. The app won't improve the resolution of your iPhone's camera, but it will throw a little light your way. Selfshot features a small thumbnail preview, leaving the rest of the screen bright white to help illuminate your face in low-light. The screen doesn't pulse when you snap a shot, but it's bright enough to snap a selfie in a completely dark room if you hold your iPhone close enough to your face.
In addition to the Photo button to snap a photo, SelfShot features Video, Burst and Self-timer buttons, but they each require a $0.99 / £0.79 / AU$1.29 in-app purchase to use.
(Via How To Geek)