Addendum:
We have a long history of verifying manufacturers’ claims and we know from experience that it’s certainly a fun game for marketeers to play.

Firstly, thank you to @NetMage for making a good point about the real thickness of the Motorola RAZR.   While I expect that the Motorola marketeers will claim it’s the part you hold in your hand which they have measured, I agree with @NetMage that any sensible person would use the slot test to determine a device’s thickness all the way down to determine its widest point.  The RAZR would certainly be thicker than the iPhone 5 in such a test.

Secondly, the often-cited example of the Oppo Finder phone is hiding a significant camera bump which probably makes it thicker than 7.6mm.

HOWEVER, the iPhone5 still isn’t the thinnest; we just have to look further afield to Korea and Japan to see the following devices:

•           Huawei Ascend P1 S (6.68mm) – Not yet showing on the 300 channels we track
•           Fujitsu ARROWS ES IS12F  (6.70mm) – Available in Japan on AU
•           Pantech Vega S5 (6.89mm) – Available in Korea from both KT and SK Telecom

Caveat; I have not measured these above devices to verify the manufacturers’ claims, but viewing online images suggests that they do not have significant additional chins, bumps or protrusions.

Conclusion: the iPhone 5 is certainly the thinnest iPhone ever, but NOT the thinnest smartphone.

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Various bloggers reporting from the iPhone launch mentioned the new iPhone 5 as "the thinnest smartphone". A quick Advanced Search of our SpecTRAX database clearly demostrates that various device vendors have launched thinner smartphones to date.

For devices which are thinner than 7.6mm then Motorola has at least 3 devices which are claimed to be 7.1mm thick; Motorola RAZR XT909, Motorola DROID RAZR CDMA, Motorola RAZR XT910

Below is the list of smartphones which are less than 8mm thick.

To try our SpecTRAX database which tracks global specs and availability of mobiles, smartphones, tablets and dongles click HERE

Steve Entwistle