A handheld electronic device 10 comprising first and second parts 11, 12 at least partially retractable with respect to one another along an extension axis 14 of the device to define retracted and extended configurations of the device, the device comprising a camera assembly 13 and a camera illumination assembly 21, the camera illumination assembly being arranged to be between the first and second parts in the extended configuration, the device being arranged such that the camera illumination assembly is substantially housed within the first and/or second parts in the retracted configuration and exposed in the extended configuration.