yes,32gb is max for sdhc standard. But be careful with class 10, I've had problems with two of them (adata, lexar) in three devices (droid2 global, droid3, Panasonic lumix camera). I had to change them for class 6. (The device had frozen after the screen lit off and waking up, or the card turned to read only in the camera, had to unmount and mount again after each waking up)
So I would recommend you to try the card first, because I guess other people with same cell phone could have no problems with the cards.
Class 6 is slower in usb reader, but the same speed at work.
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