I've been missing a lot of calls recently. I want to receive a reminder of missed calls. How do I charge?

Let me remind you of 2 yuan every month. "Missed call reminder" service is a short message reminder service provided by China Telecom for Tianyi mobile phone users who have not opened personal communication assistant service. When the user shuts down, is out of service area, does not answer the phone or the phone is busy but does not answer the incoming call, the system will automatically send a short message to remind the user of the incoming call information. It is suitable for Tianyi mobile phone users of China Telecom who have not opened personal communication assistant service (personal communication assistant has included missed call reminder function). The missed call reminder can wait for incoming calls, transfer incoming calls, and make the mobile phone vibrate and be super cordless. It can be handled through SMS channel, handheld business hall, Huan go website, number 10000 and business hall. Monthly rental fee 2 yuan/month. For more service benefits, click "official website" Customer Service 2 18 below to answer your questions.