The reasons for the bulk are a metal frame and a 4100mAh battery, which contribute to the phone’s 175g weight. Although it does not have a unibody casing and the back is plastic, the battery is not user-accessible. The dual-SIM tray is on the left side, within the frame. The phone does not support expandable storage, so there is no slot for a microSD card.
There are two colour options for the Lenovo Zuk Z1 in India; white and space grey. Our review unit was grey, which we quite preferred over the white option. The back has a dull, metallic finish, as does the frame. The phone is bare of any Lenovo branding, with just a Zuk logo at the back and nothing else. The camera and flash are located at the centre of the back near the top, and on the whole we quite like the minimalist styling of this phone.