It appears that a vivo phone may soon join the growing list of smartphones featuring 10,000mAh or larger batteries. According to a tipster, the company is currently testing such a device.Tipster Digital Chat Station revealed in a Weibo post that vivo is testing a phone equipped with a 10,000mAh silicon-carbon battery.According to the tipster, the device uses a 4.53V single-cell silicon battery that has a rated capacity of 10,000mAh. Meanwhile, its typical capacity is said to range between 11,000mAh and 12,000mAh.The vivo phone is unlikely to launch anytime soon, as it will...