Unsubscribe and refund are not supported, which means that you can't unsubscribe and get no refund after signing the contract, so you should buy carefully. You need to sign a contract to handle the mobile phone package. Many users have to sign a mobile phone package many times. They may not care about the relevant provisions, and some treaties about time may not notice.

If a new and more affordable package is launched in the market, it may refuse to change and unsubscribe because the contract period has not expired.

No matter China Mobile, China Telecom or China Unicom, additional value-added services can be unsubscribed. We can see that many services are marked with the words "unsubscribe" on the back of the mobile phone.

However, our mobile phone number will also have a master package, which cannot be unsubscribed and can only be modified, which is determined by the mobile communication system.