Ne, tím to nebude. Bude to shit kvalitou té karty.

V tom threadu cos odlinkoval se jasně píše:

"If you are getting a micro SD card, it is worth noting that some cards are currently incompatible with the Lumia 820. While we are working on expanding the micro SD card support, we’d recommend you to use a faster random write performance card from a well-known manufacturer. You can also save videos to phone memory by setting ’Store new pictures on’ to your phone (in Settings tap ‘phone storage)"