Infinix Smart HD 2021 official Pictures. Infinix Smart HD 2021 is a Smartphone of infinix. The Infinix Smart HD 2021 Android Smartphone. Announced Dec 2020. Features 6.1″ Display, MT6761D Helio A20 Chipset, 5000 MAh Battery, 32 GB Storage, 2 GB RAM. Infinix Smart HD 2021 price starts.