Just got my recently purchased Lumia 810 back from repair, and I was wondering what SD cards work best? I'm still debating between 16 and 32GB(leaning towards 32), but what brand of micro sd works best for the lowest price, or does it not really matter that much?
I have a Sandisk UHS-l in my 820 (almost the same as your phone) and it works great. Plays movies as smooth as at the theater. I have a 64gb in it now but I had a 16gb before and they both worked great. As our phones only have 8gb of internal storage a SD card is almost a must. Might as well get the best you can get. I highly recommend the Sandisk UHS-l. fdalbor
I've done music, movies and use them for App storage as well (apps that I want to be able to install anywhere - even when I don't have Store access) and never had any issues. I did have an issue with my old Class 10 SanDisk card, but it was just dying a slow and painful death and needed to be retired.