With few physical connection ports, the iPad mini's power providing Lightning connector is hidden discretely out of the way on the device's base whilst, somewhat strangely, the 3.5 mm audio connector is situated on the top of the tablet.
All the Xperia Z's ports and connectors are hidden behind plastic flaps, on account of the phone's water and dust resistance credentials, meaning you'll have to prise these out of the chassis whenever you want to charge or connect headphones.