At present, the lowest monthly rent is the Shenzhouxing standard card 10, which is free of charge, but it is very expensive to give away a 20-minute call!
I use M-Zone Fashion Pioneer, and rent calls in May on average. CRBT 5M internet traffic is 200 minutes, and 300 messages are typed. Inside the network, outside the network 240, free answer 60. There is also 70 10M internet traffic, and there is not much news in 300 minutes. It seems that there are more than 400 messages, 70 of which are global.
These can roam.
There is another person, 29 yuan, who can't roam for free in 190 minutes.