I miss three things from new iphones:

* The 3.5mm headphone jack for plugging in wired headphones. Wired headphones often last longer than wireless headphones.

* The physical home button, way easier to use than gestures.

* The full length status icon bar. On newer iphones not all icons are shown only a few. Which means you cant see if the VPN icon is connected/visible. Old iphones had full length icon bar.