How to block an undesired phone number on a Blackberry Curve 8520?
- Security Options
-Select the options you want to block (SMS, MMS or calls) and then check specific address
- Click on configure the white list and then add a phone number.
- Delete the numbers you want to blocked.
You Blackberry phone will only accept SMS, MMS or calls from people present in your contact list.
Thanks to mimi2203
for this tip.