iphone upgrade

[Eve]

I am due a phone upgrade and am wondering what to go for. I've had it for about 2 years and love most things about it.

Seeing as a lot of contracts are now 2 years I do worry about ending up struggling to use functions on the phone with ever increasing upgrades. I have a 3g and I haven't been able to upgrade for a while and things do run quite slow now and I have big battery issues (maybe the age of the phone though?).

How much of a difference do more upgraded models make? I would like a better camera on it and one that is easier to use when you're not looking at the screen (eg taking photos of me and friends together so trying to guess where the take photo button is!) if that makes sense.

I would ask if the battery power is any better though with increasing technology I'm not holding out much hope :)

I tend to use it most for texting (tend to text rather than call), email, listening to music, facebooking and some apps (mostly useful ones like train times and news, don't use games and such), bit of internet use and taking quite a few photos.

Any advice welcome :)

[friedgreentomato]

I have the iphone 4s, the camera is fantastic - I did'nt bother taking a proper camera on holiday with me last year it is that good - the battery life is better, you also have the speakey thing which is good if you speak with a plum in your mouth!!

Other than that its basically the iphone 4