iPhone's space problem Looking at my iPhone via iTunes, i see a very questionable amount of "Other".

What is it? How can i delete it?
In my experience, iTunes' space meter is fairly unreliable (by which I mean that I've seen it jump by gigabytes with no apparent cause, and occasionally say that my space was over the limit when that's obviously impossible).

On your iPhone, go to Settings > General > Usage > Manage Storage to see exactly what's taking up all that space.