Biggest screen : SmartNamo Saffron 2- Dedicated to Mr. Narendra Modi

The smartphone with the biggest touchscreen in the world is SmartNamo Saffron Two, a phone dedicated to Gujarat chief minister Narendra Modi. The device has a 6.5-inch screen with 1920x1080p resolution and 338ppi pixel density.  

Screen: 6.5 inches
Screen Resolution: 1920x1080p
Pixel Density: 338ppi