Vivo S1 Pro | Pop up selfie camera Vivo is expanding as a big hub for mobile phones, mobile accessories with mid range prices flagship category but features par excellent. Vivo is now all set for unleashing the bigger and better generation phone Vivo S1 to unveil an all new flagship smartphone in the new market. Built in with MediaTek Helio P70, the phone is all set to launch its impact in India soon.