it is located between your power button and headphone jack use a paper clip insert it into the little hole then firmly push down until the slot pops up the sim card is removeable from tray
Between the headphone jack an hold button on the top is a little panel. It's underneath it. I use a paperclip to get it open normally. Just put it in the little hole on the panel and pry it out.
On the top of the iPhone next to the headphone jack there is a flat, but long shaped indention. The SIM card is in that slot. You will need to pop it out.
