Not enough power available in such a small battery.

Hmm could easily combine a torch,projector,phone,camera with a powerful zoom and all within dimensions that fit within a pocket comfortably by simply making the phone circutry round in shaping and incorperating the battery as part of the outterskin in a cylidrical design. this would enable a large high quality lense of slr quality to be used rather then the pathetically inferrior ones in use by 99% of the manufacturors, combined with a piviting displayscreen which would double as the projected image source with an additional batterry pack available as an extra should it be required to have extended use as a projector.the seperation of physically chaning the circut into cylindrical shape which would also have ground into it some of the gearing needs for the camera/projectors focussing racking would help assist in pysical seperation and so decrease noise output as well the only thing that would be so remarkably diffrent would be the shape would be round in nature (unless the surounding batterypack makes it square again).one that would have superhigh zoom and projecting range would be required to be equipped with inner tubes that will extend the front elements further forward thus enabling some very serious image taking and displaying capabilitys.also a ability to double as a half decent torch would be handy at night when your getting into the car...