Sorry I am ignorant when it comes to SD cards, what do the different classes mean?
Um, why? The One X doesn't have a microSD slot, so a microSD card would be useless to One X owners.This should be passed along to our At&t HTC One X counterparts.
Speed - higher class supossedly means higher transfer rate.
Um, why? The One X doesn't have a microSD slot, so a microSD card would be useless to One X owners.