Does Unicom Chengdu Metro charge 4G for free?

The corresponding free driver is free, so when you enter, some users may restrict you from turning on the wifi function of your mobile phone first, and then accessing wifi after searching Unicom's 4G signal. At this time, it may cause certain restrictions to users, such as restricting Unicom users from playing telecom or mobile users, and requiring you to enter your mobile phone number and obtain verification code and other related services when entering. Telecom or mobile phone can't get the corresponding verification code, Unicom users can use it for free, and telecom or mobile users can't use it for free.