1. The contact method is more permanent: the assistant number can be bound to a mobile phone number or landline at will. No matter when and where the phone number is changed, as long as the assistant number is re-bound, friends can always use the assistant number. Find you; 2. Communication life is safer: When you need to leave your phone number when chatting, making friends, online transactions, or renting a house, you don’t have to worry about unnecessary harassment. Use the assistant number to contact you to ensure smooth communication when needed. Enable toll-free when not needed. Disturb function or suspend the use of assistant number, harassing calls are no longer a threat; 3. Communication services are more free: you can use the call firewall function to set Do Not Disturb for different call numbers or in different time periods when it is inconvenient to answer calls. All the calls you want to answer will not be missed, and none the calls you don’t want to answer will come in; 4. More peace of mind for communication needs: you can enable voicemail, which will be automatically forwarded during the firewall setting period for incoming calls, when the phone is out of power, and there is no signal. Voicemail, important calls are not missed. (The above content is only applicable to Guangdong Unicom users)