Which is cheaper, mobile, China Unicom or telecommunications?

For Guizhou Unicom, the most favorable tariff is the 4G national combination package launched by Guizhou Unicom, and the national answer is free. You can choose the corresponding call voice package or domestic traffic package in the package. Voice packets in 300 yuan can last up to 3000 minutes, which is equivalent to 0. 1 yuan/minute, which is quite cost-effective.