What's the difference between caller ID and caller ID?

The difference between caller ID and caller ID reminder is that they belong to different businesses. It can be understood from the definitions of caller ID and caller ID reminder:

1 Caller ID refers to providing the called customer with the identification number information of the calling customer, that is, when someone calls you, your mobile phone will display the phone number of the other party, and you can decide whether to answer the call or not, so as to avoid unnecessary disturbance and trouble.

Call reminder means that when your mobile phone is turned off, out of service, busy or dead, all incoming calls will be transferred to the call reminder service platform. When the phone is turned on or returned to normal standby state, the system will automatically send the missed calls to your phone in the form of short messages.