Swapping onboard storage on the HTC HD7
“One of the limitations of Windows Phone 7 is, that Microsoft’s new mobile OS isn’t supporting user removable flash memory like microSD cards, as supported by Windows Mobile, but Windows Phone 7 uses embedded memory like Apple’s iPhone does…However, even if Windows Phone 7 isn’t featuring a customer swappable flash memory, it seems that some handset manufactures are using micro SD cards anyway.”
Even though Microsoft has mandated non-swappable storage, you can still upgrade a WP7 device’s storage capacity if it has a MicroSD slot – if you don’t mind having to factory-reset your phone. the unwired.net takes a stab at the process, and though it’s not as trouble-free as it could be, Arne shows that it can be done.