HTC Desire 820 Dual Sim official Pictures. HTC Desire 820 Dual Sim is a Smartphone of htc. The HTC Desire 820 Dual Sim Android Smartphone. Announced Sep 2014. Features 5.5″ Display, Snapdragon 615 Chipset, 13 MP Primary Camera, 8 MP Front Camera, 2600 MAh Battery, 16 GB Storage, 2 GB RAM, Corning Gorilla Glass 3. HTC Desire 820 Dual Sim price starts.