if you got yourself a used iPhone 4 it
might not come with a user manual and
you might have to change the sim card
yourself on my iPhone the slot for the
SIM card is on the right side of the
display and you can barely see it
there's a tiny little hole here you can
put a paperclip or a safety pin into it
don't use a wooden toothpick that might
just break off and to get the SIM card
out you actually have to use some
pressure it's going to feel like that
safety pin is going right into the fold
circuitry but with enough pressure the
SIM card is going to pop out take out
the old SIM card and put in the new one
there's only one way to put the SIM card
into the holder so you can't go wrong
wish you the best of luck with your new
phone