OnePlus 8 5G (T-Mobile) official Pictures. OnePlus 8 5G (T-Mobile) is a Smartphone of oneplus. The OnePlus 8 5G (T-Mobile) Android Smartphone. Announced Apr 2020. Features 6.55″ Display Snapdragon 865 5G Chipset 4300 MAh Battery 128 GB Storage 8 GB RAM. OnePlus 8 5G (T-Mobile) price starts.