After ICBC launched SMS service, there will be no charge for these two years. Why?

After ICBC opened the SMS service, it cancelled the SMS service for two years without charge. Because there is a short message fee in 3 yuan after ICBC opened the short message service, it will cancel the short message service without deduction, or cancel the short message service without deduction for two years. ICBC usually charges 3 yuan as a courier fee, that is, a SMS reminder of the transaction amount.