Vivo S1 was launched in 2019. It's a budget smartphone having a Super AMOLED Halo FullViewTM waterdrop notch Display. It has a Flash In-Display Fingerprint Unlock, AI triple rear camera configuration and long-lasting battery life, along with powerful performance. Funtouch OS 9 runs on top of Android 9.0 in Vivo S1. The smartphone is 8.13mm thick