Archos 55 Cobalt Plus official Pictures. Archos 55 Cobalt Plus is a Smartphone of archos. The Archos 55 Cobalt Plus Android Smartphone. Announced Jan 2016. Features 5.5″ Display, MT6735P Chipset, 13 MP Primary Camera, 2 MP Front Camera, 2700 MAh Battery, 16 GB Storage, 2 GB RAM. Archos 55 Cobalt Plus price starts.