How to Block SMS Messages

1. Log into your cell phone account online and look for 'Messaging Preferences' or a similar option. Some providers, including AT&T, T-Mobile, Alltel, Verizon and Sprint, now allow you to adjust your settings to block certain contacts. You may have to pay an additional monthly fee and register for this service. You'll probably have a limit for the number of contacts you can add to this list.
2. Save the phone number to your contact list. You can name it 'Blocked.' Then edit the contact and scroll to 'Messages' or 'Text' options. Change the volume to 'silent' and turn any LED light and vibration settings off. This will allow you stop being notified when you get a message from this person.
3. Call your cell phone provider and ask the representative to block certain phone numbers from texting you. Some providers will gladly accommodate this request because they do not want you to remove text messaging completely because of annoyances from one person.
4. Report all cell phone spammers to your cell phone company. Take note of the phone number that sent a text to you and the product being sold so you can make a complete report. This may not be an instant fix, but over time, the spam may stop because of your complaint. Ask the provider to credit your account for any unwanted spam messages.