The device is expected to be the centrepiece of a Google event in New York on Monday, 29 October, when the firm is also expected to update its Nexus 7 Android tablet, The Telegraph reports.
Carphone Warehouse's page, which has now been removed, said the Nexus 4 will have a 4.7-inch screen with density of 320 pixels per inch.
The handset was listed as measuring 68.7 by 133.9 by 9.1 millimetres, apparently thicker than its Apple rival's 7.6 millimetres.
According to the paper, the 'leaked' listing offers a version of the Nexus 4 with only 8GB of storage, though earlier leaks have suggested there will be a version with at least 16GB too.
The Nexus 4 is expected to run an updated version of the current version of Android 4.1, Jelly Bean, rather than the next full-blown release, 4.2, codenamed Key Lime Pie, the report added.