How does Dentsu set up to intercept all calls in an area?

1. Open the mobile phone housekeeper and find harassment interception in the utility.

2. After entering, click Settings in the upper right corner, as shown in the figure below.

3. Find the blacklist number in the list management and click Enter.

4. After entering, click Add below and find the block by region in the Add Type.

5. Select the area to block, and then click OK.