How to close the call manager with Unicom card

Call Manager is a communication assistant service to remind and manage missed calls. When the user's mobile phone is turned off, there is no power or no signal, it can record the incoming call information and notify the called user in time through SMS. Due to the different policies of different cities, the name and charge of the call reminder service are also different. If you have a call manager or call treasure, you can contact your local human customer service to find out how to cancel the service. For example, Guangdong Unicom can cancel the call butler service by sending a short message from 00000 to 10655766. Cancellation generally takes effect immediately (within 24 hours at the latest), and the charge for sending short messages is 0. 1 yuan/article.