Very interesting that these phones can take microSD up to 2TB. Is it my imagination or are developers for Windows 8.1 apps seem to disallowing their apps to be loaded to the card?
Extras+info on my 620 shows Lumia Cyan and the following
Manufacturer rm-846_eu_euro1_273
Operator. O2O-GB
Configuration Id 443598
Core Build. 3058.50000.1425.10479