I have multiple phones and as a mobile developer I end up switching sim cards between phones often. This is tricky with iPhone since it has a carrier that requires the use of something like a paperclip to release it. It is a slick design and helps maintain the slick profile, but it can be a pain.

In a customer meeting, we found we needed to demonstrate the use of a phone that had no sim. Imagine my horror when I found that the sim was in my iPhone and I didn’t have a paperclip to release the sim card door! I asked to borrow an earring from one of the meeting attendees and it worked perfectly to open the iPhone sim compartment and finish the demo. MacGyver would have been proud.