1th step: In the iOS7 interface we find "settings" as shown in the figure
2nd step: Then click "Notify"
3rd step: In the above figure we will find "information", the following figure:
Step 4th: Then click "Show IMessage reminders for the following" in the information interface, and then click the "Show reminders from my Address Book" option:
5th step: In the iOS7 system new added a blacklist of shielding function, click Settings, select Information, click on the black list as shown in the following figure
6th step: Select New, then the system will automatically pop up all of your contacts, select the contact you want to screen, you will not receive a blacklist of contact calls, information or FaceTime call, but this function only for your phone has been added to the contact, unknown number if you want to add to the blacklist, To save the phone number to a contact before you can add it.
The 7th step: If you want to cancel our phone in the blacklist to click on Edit, and then click on the Red button, cancel blocking can be.
By setting up after you what rubbish information you can not receive, of course, may also be some new friends to filter out the information oh, so we still need to consider setting it.