Barclays range of business services page 32 and the inside back cover.
There was a special edition released to Google employees with a unique back cover.
The companion 710 model would feature similar specifications as well as an interchangeable back cover.
An unique feature is supposed to be the smart back cover of the phone that can change OS interface.
An explanation was given on the single's back cover:
Additional information about the journal was also provided on the outer back cover of each part from vol.3 onwards, which stated that:
(The back cover of the booklet shows male full frontal nudity.)
The rear back cover is also similar to the cover of "Re-Offender", the lead single.
A biography and picture were on the inside back cover, the mug shot the papers had run.
The first book's cover is more or less the back cover of the normal cover.