As I've found by searching around, it seems like the new Nokia Windows 8 phones have issues when using Class 10 micro-SD cards. I'm using a 32GB Aopen Class 10 micro-SD card in my Lumia 810, and I'm experiencing the following issues:
*Attempting to sync music to my phone's SD card using the Sync App will cause the phone to reboot itself during file copy. If I keep trying, I can get many of the files synchronized, but eventually it will crash and reboot every time a copy is initiated.
*Using the video camera, videos recorded to the SD card will skip when playing back. When playing the videos on a PC, the skips are still there, which means they were recorded with skips.
It almost seems like the issues are related to file writes, as I've had no music playback issues. Also, I have the Xbox Music Streaming service, and I have downloaded several GBs of music to the SD card using the app on the phone itself. I recall one issue where the Xbox music app became unresponsive, and I had to reboot the phone, but other than that one incident, all the other files have been stored correctly and work fine.
I'd really love to know if there has been any updates on this from Nokia or Microsoft. While certainly not a deal-breaker for me, I'd like to know if the issue is being addressed, or if I should start shopping for an 8GB class 2 or class 4 card, if that is all that will be compatible. Officially, I know that my card is supported, but in practice, it doesn't work correctly.
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