It seems like the photos are not always in focus properly/are not as crisp as they used to be. It also seems to struggle in even slightly lower lighting (like anything less than bright daylight)- the photos are possibly a bit grainier. The lens has been dropped a couple of times and it does have trouble turning to zoom (it gets stuck). It could also be due to me not using the camera as much so I'm out of practise/not getting as much of a chance to get good photos.
If it is the lens, are there any lenses you would recommend? I mostly use the camera for portraits or sight-seeing/walks.
If it's the body - is it worth getting a new DSLR? My phone camera is so good I hardly see the point in it any more, but there is something satisfying about my big camera.
Do you have any good links/book recommendations to help me get my head around the technical aspects of photography/cameras? I might take a class or something, I really would like to understand how to play with the settings etc.