Many times you do not want receive call on your mobile from any stranger. Here is best solution for receive calls from only those numbers which are in your contact list of your mobile.
By this option you will not receive any calls from unwanted person, ad campaign, insurance company etc. If you want receive any call from new number then you have to add that number in your contact list.
For activate this option go to Mobile Setting. Then click on Call Setting. Then click on Call Receive Setting. Then select “Receive Call From Contact List Only” option. Now click on “Activate”. After that switch off your mobile for 1 minute. After switch on your mobile, try to call on your mobile from that number which is not in your mobile’s contact list. You’ll find that your mobile is out of coverage. But same time when you’ll call to your mobile from that number which is in your mobile’s contact list then you’ll find that your mobile is ringing.
This is best option for not receive any call from any other numbers.