how to block all unkown numbers on nokia 106  like neda phone or others do

Yes, it does.

To block or unblock a number:
1. From the home screen, press the Menu key.
2. Scroll to Settings and press the Select key.
3. Scroll to Call settings and press the Select key.
4. Scroll to No. screening and press the Select key.
5. The no.screening menu will now be displayed. Press the Options key.
6. With Add number highlighted, press the Select key.
7. Enter phone number will now be displayed. Press the Search key.
8. The contacts will now be displayed. Scroll to the required contact you wish to block and press the OK key.
9. Number added to list will now be displayed briefly. The selected contact will now be barred and you will be unable to receive calls and text message from the selected contact.
10. To remove the selected contact from no. screening, press the Options key.
11. Scroll and highlight Delete number and press the Select key.
12. With Delete number from list? displayed, press the OK key.
13. Number deleted from list will be displayed. You'll now be able to receive calls and text message from the selected contact.

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