Why do phone calls take the form of text messages?

1. This situation means that the other party has activated the incoming call reminder service. The incoming call reminder means that when the mobile phone is turned off or out of the service area, the incoming call information within 24 hours during this period will be saved for you through the incoming call reminder platform.

2. After the phone returns to normal, all incoming call information will be sent to your phone in the form of text messages, so that you no longer have to worry about missing important calls.

Extended information:

1: Customers cannot use the incoming call reminder when setting up call transfer. They can use the incoming call reminder after canceling the call transfer setting.

2: After turning on the incoming call reminder, when the phone is turned off or out of the service area, a friend will hear the prompt "Hello, the user you are calling has enabled the incoming call reminder function. We will send you your call information." Notify the other party via text message, thank you for calling, please hang up and say goodbye. "You do not need to pay for this call.

3: The text message recording the incoming call information is retained in the system for 24 hours.

4: China Unicom’s secretarial automatic service, also known as “Call Butler Service”. It is a communication assistant service launched on December 15, 2004 to remind and manage missed calls.

5: Unicom Secretary, Unicom Secretary mainly provides the missed call reminder function. When the user is unable or inconvenient to answer the phone, the system will answer all incoming calls on behalf of the user and record the caller's message. Notify users of all missed call information via SMS at the first time, including: the caller, the time of the call, whether there are any messages, etc.