Mobile phone: iphone 12
System: iOS 14
Software: CRBT Duo Duo 3.0
1. Turn on the phone and click to open the CRBT application.
2. In the main interface of the application, click Open Settings.
3. Click to open privacy settings.
4. Click to open the switch behind the programming advertisement display settings.
Practical function is the basic function of CRBT.
One is the prompting function, which plays the role of prompting, that is, reminding the caller that the phone is being connected, please wait a moment, and the other practical function is the psychological function. This is a function of a similar tool for using telephone between communication subjects. When the phone is waiting, the calling end can hear the beautiful or lyrical music set by the called end. Due to the psychological function of music, the caller can release nervous and depressed emotions while waiting to answer the phone, and get some comfort and appeasement.
The third is the social emergency function. The users of this function are mainly managers of social public relations. The government has not realized that the notification or broadcasting in the emergency plan can be solved by using the method of color ring back tone broadcasting. In the case of sudden war, disaster and incident, the government uses color ring tones to force broadcasting to cover all callers and realize accurate information transmission. This function is useless at ordinary times. Once it is enabled, the effect is obvious.