The Tiny T1 from Zanco is the World’s Smallest Cellphone
This is officially the world’s smallest fully functional mobile phone. Talk and text and when you’re done, tuck it into that weird little coin pocket in your jeans. It weighs just 13 grams, operates on the 2G network, and features a NANO SIM card slot. It stores 300 numbers & 50 SMS messages as well as the last 50 in/out numbers. Recharges via microUSB.