Pocket Tripod is a credit-card-sized phone holder that fits in your wallet | TechCrunch
This credit-card-sized phone is what we all have been waiting for
Red Shield Universal & Portable Phone Stand, and Flexible, Foldable Credit Card Size. Perfect for watching movies and videos on your smartphone in landscape. Works like headphones, headphones cable storage organizer.: Amazon.de:
Credit card-sized phone - When all you need is just a phone, there's Light Phone | The Economic Times