Originally Posted by
ryandelmundo
Wow I've cut at least 5 SIM's for my iPhone 4 and iPad and never had any problems. Some I even cut by hand! I'm surprised to hear you've had sticking issues....
iPhone 4S bro

that's the culprit - never had any issues with the iPhone 4 either - the 4S has a sim opening which is a hair narrower - basically a cut sim bumps into the inner lip of the opening, when you try to eject. That is if the sim wasn't shaved.