That looks like an out of focus picture. It could be that your camera suffers from a back or front focus problem. But, I wouldn't jump to that conclusion only from looking at a picture like this one. From the looks of it, it was taken indoors, with insufficient light, and was hand held. Those are challenging conditions even for an SLR camera.

You see, when there is not enough light, the camera has to compensate by either using a wider aperture (not much available on a phone camera to begin with), slowing the shutter down (increasing the likelihood of camera shake), or increasing the ISO (increasing the visible grain). Under low light conditions, focusing is also more challenging, even for a high end DSLR camera. To test that you do not have front or back focus issues you will need to take some shots to a chart, preferably using a tripod or something like it. But, my guess is that you are simply running into the low light limitations of a camera of this type.

Try taking some shots outside or get yourself some strobe lights for your interior shots and more than likely you will get much better results. Also, make sure to press very gently on the shutter button while taking the shots. Press slowly until it has acquired focus and then slowly apply more pressure until it reaches the point of release.

Let us know what you find.