How to modify package SMS for Unicom 3g card?

At present, SMS is not supported to change the package, but there are many other ways to change it, which are more convenient, such as: mobile phone business hall, online business hall (www. 100 10.com), and dialing manual service. If you want to make changes through the mobile phone business hall or online business hall, you need to enter your mobile phone number and the revised service password, then log in and select Business Handling-Package Change. Need to be reminded that if your package has a contract, you can only change the package by handling the same file or changing files.