How to change the package of telecom mobile phone card?

Telecom mobile phone card package can be changed. Users can bring their ID cards to the telecom business hall to change the package. Please note that if your current package is within the agreement period, you can't change the low-end package, only the high-end package. There is no such restriction after the agreement expires. For more service benefits, please pay attention to the official account of "Anhui Telecom" WeChat.