The basic mobile phone package cannot be cancelled. If you want to change the package, if you need to change the package, you can try to change it in the mobile phone business hall-service-handling-change package if you meet the conditions. Tips: The package change will take effect next month. From 0: 00 on the last day of each month to 8: 00 on the following month 1 day, old users of 2G and 3G can't switch to 4G packages for the time being. After successfully switching to the 4G package, they need to restart the mobile terminal to use the Internet function normally. If you can't handle it, please contact local manual customer service for consultation, subject to local policies.