Where is the memory card on the iPhone 4S?
The memory card is located on the skinny right side of the
iPhone, if its standing upright( It is located on the opposite side
of the volume and ringer buttons) There should be a small dot a
little bellow the center of the side, and when pushed in using a
small needle (like a push-pin) it releases the sim/memory card to
the iPhone. To put it back in just place the sim card on its
holder, then push it back into place with the holder. If your
iPhone freezes this might be a good idea to.