The most important is a good battery. A iPhone type battery is not my thing. Camera is okay important, I'd like to take a few pictures, but I don't expect to be a photographer.
A good quality phone that can deal a little damage. I know princesses ain't badasses, but a little roughness is accepted. Screen size shall be "5 or max "5.5.
Price... idc. I pay, what I can pay or wait. Simple.