I just ordered a 16GB A-Data class 10 MicroSd card. It's in hopes that it will speed up loading of apps etc... since that's where most of them are on my phone. anyone else try that? The freebie one that metro gives you is probably a class 4 or something. That A-Data card actually exceeds class 10, supposedly roughly about 20MB write 20MB read. If this is the case, then my phone should in theory gain a lot more speed than say overclocking it.