Joke Collection Website - Blessing messages - Why are the charges for SMS messages of different colors on the same card different in postal savings card?

Why are the charges for SMS messages of different colors on the same card different in postal savings card?

User levels are different. According to the query of Cai Hui Bar, the same card in postal savings card has different colors, different user levels and different SMS charging regulations. Ordinary users will be charged 3 yuan's handling fee every month when the Postal Savings Bank reminds them by SMS. When the gold card user charges, the SMS reminder of the Postal Savings Bank is free, and there is no need to charge any formalities.