Kiraly
Member
I'm currently on a crummy old Galaxy SII, so I'd be fine with a 4.3" screen. There's one thing the GS4+ seems to have that I guess the Z1c doesn't offer; the option to use both cameras at once. I like that feature.
That is such a small feature that you will probably use only for a small amount of time until the novelty wears off, I wouldn't let your decision be based upon that.
There might even be an app that mimics this feature in the app store.