Not sure about how much customization I need on my cell phone...
My problems are the keyboard is not suitable for people with bigger hands, I constantly miss type when im spelling just cause I cant hit the letters properly and that is fucking annoying on a daily basis...Internet layout sucks...Most importantly for me, the camera is dogshit compared to others currently on the market (more specifically the Samsung Galaxy).
Apple products work well, only if you have more apple products to link them to. If you dont, then its a bitch.