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How does Apple 7p intercept spam messages?

Tool/material: Apple 7p

1. Open our Apple 7p mobile phone first, then find the settings on our mobile phone desktop and click.

2. After entering, slide down the setting interface.

3. After entering, find the information and click.

4. After entering, find the location and filter information, and click.

5. After entering, just click to open the filter unknown sender switch.