"From a residential perspective, the mobile phone is ubiquitous, " said Jason Williams, General Manager of Yale Residential.

ENGADGET: Yale demos NFC-enabled residential locks, germaphobes rejoice (video)

Other analysts are known to have published reports praising companies to the skies, and then tell fund managers who ring up for more information to call back on a private mobile number - so the analysts can tell the fund manager (on a phone line that is not being tape recorded) to ignore the report and avoid the stock like plague.

BBC: Analysts - the scourge of the City?

We caught up with Greg Sullivan -- senior product manager of Windows Phone -- for an early morning chat during Mobile World Congress.

ENGADGET