Introduction messages can be kept for a long time. What are the ways to open it?

You can do it through SMS, SMS assistant official website and Huan go website. "SMS storage" service is a comprehensive service that both the calling party and the called party can subscribe to. After subscribing to this service, the SMS sent/received by users will be automatically saved in the SMS safe deposit box of users. Users can query the SMS records of the safe deposit box through the self-service website. When the safe deposit box reaches 80% of the set capacity, it will receive an automatic notice from the system. Short message storage service provides point-to-point, point-to-point application and point-to-point message storage service. China Telecom Tianyi mobile phone users can handle it through SMS, SMS assistant official website and Huan go website. Monthly usage fee for SMS storage: 2 yuan/month, with no fixed validity period. Service provider China Telecom has the right to terminate this service. Click "official website" Customer Service 22 1 below for more service offers.