The Vivo S1 Pro (China) was announced in 2019, May With 6.39 inches, 100.2 cm2 (~85.3% screen-to-body ratio) Super AMOLED, Powered by Qualcomm SDM675 Snapdragon 675 (11 nm) and running Android 9.0 (Pie), Funtouch 9, the device delivered smooth performance and multitasking capabilities. while the Li-Po 3700 mAh, non-removable ensured long-lasting usage.