Posh Ultra Max LTE L550 official Pictures. Posh Ultra Max LTE L550 is a Smartphone of posh. The Posh Ultra Max LTE L550 Android Smartphone. Announced Aug 2016. Features 5.5″ Display, MT6737 Chipset, 8 MP Primary Camera, 2 MP Front Camera, 2700 MAh Battery, 16 GB Storage, 1000 MB RAM. Posh Ultra Max LTE L550 price starts.