I received my s3 in the mail earlier today & immediately put my sim card from my old d4 in it instead of the one wirefly mailed with it. Does it matter which one I use? if not I'll just throw the new one away. 2nd when I changed my wallpaper I couldn't figure out how to make the wallpaper scroll w/ the homescreens. It's just saving it as a fixed image. Also, I've had several text messages deleted when going back and correcting misspelled words so can anyone recommend a better keyboard (with autocorrect) from the market? Thanks.