The vivo X27 will come with its pop-up selfie camera on March 19 and it appears it will arrive in three variants with different chipsets and fingerprint scanners. The new devices will be accompanied by the vivo S1, which is an entirely new smartphone with a selfie camera and an LED flash rising from the middle of the top. The vivo S1 is a surprise, as no one expected this phone. It is rumored to be up for pre-order on Saturday, three days ahead of the big event. It is said to have Helio P70 chipset, 6 GB RAM and 128 gigs of storage. The screen will be 6.5" with Full HD+ resolution...