Are there any off-the-shelf options for securing the contents of an SD card so that files written by apps writing to SD are encrypted? If so, what is the best option? I'm looking for something for all apps. I would strongly prefer to do it without rooting.
Possible Duplicate: Is the class rating of my MicroSD card relevant? If you've upgraded the SD card on your phone to a higher class, have you measured or noticed any significant performance difference? What kinds of apps seemed most affected?
What is the maximum class (e.g., 2,4,6,8,10) supported of microSD card supported by the HTC EVO? I noticed an improvement in performance when upgrading from the Class 2 to a faster card on my Hero. I don't want to pay extra for performance that won't benefit my EVO. HTC and Sprint have not included this information in their specs and I can't find it elsewhere. Either I'm not understading something fundamental about SD classes or it's not published where I'm …