vivo V1921A appears with 6.39-inch display and 4,220 mAh battery
Another vivo handset passed through Chinese certification agency TENAA and we got some key specs as well as a couple of shots. The listing for the V1921A reveals a 6.38-inch screen with a UD fingerprint scanner. Around the back, theres a triple camera setup and a generous 4,420 mAh battery. vivo…