My experience with Windows Phone has been limited to the Lumia 610, so I was not surprised when the phone could not connect to the PC in mass storage mode (as far as I can tell, this feature is not supported?). There were rumours a while ago that Windows Phone 8 would also not have this feature, which I found surprising (shocking, even?).
I would like to have a definitive answer on this issue, especially seeing as the Lumia 920 does not have a SD card slot (although I'm glad that it has USB OTG, after having that feature on my N8 I would not be able to tolerate a phone without it) . I've seen on several blogs that mass storage mode is supported, but I have been unable to find official confirmation of this.
To be clear, I am not asking about the availability of SD card support, but merely if you connect the phone to the computer with the USB cable, does it allow you to use it in mass storage mode i.e. access the onboard 32GB the same way you would access a normal flash drive through Windows Explorer?