FILE - This Feb. 19, 2014, file photo, shows WhatsApp and Facebook app icons on a smartphone in New York. WhatsApp says on Tuesday, April 5, 2016,  it's now using a powerful form of encryption to protect the security of photos, videos, group chats and voice calls in addition to text messages sent by more than a billion users around the globe. (AP Photo/Patrick Sison, File)

Bendable smartphones

A Chinese start up plans to unveil a design for bendable smartphones.