Samsung Galaxy SIII camera problem | Telecom Consumer Discussion Forums

For the last couple of weeks, whenever I’ve taken a photo with my Samsung phone camera, there is a spot on the lower half of the photo.  A tiny, blurred circle. I have cleaned the exterior of the camera lens, so it must be inside the camera.

Anyone know what could cause such a thing, and if there is any way to fix it short of taking the phone into the shop?  Or should I just buy a new phone.  I’m a traveler and I need to take good photos with my phone!