I don'tknow how to block a contact on a lg arena phone

Please follow the steps carefully

1. Step 1 Call the T-Mobile customer service phone number located on your phone bill. Tell them you would like to hear about T-Mobile's call blocking service. The customer service then tells you how you can block all the calls coming from your T-Mobile cell phone by adding this service to your plan. When you select this service, anytime you dial a number from your T-Mobile cell phone, the number will come up Restricted on the call receiver's caller ID.
   
2. Step 2 Dial *67 prior to any number on your T-Mobile phone that you want to block, if you want to just block one call at a time and choose which numbers you dial are blocked. This is another way you can call someone and to have it appear as a Restricted call on the other end.
   
3. Step 3 Program your T-Mobile phone to block all calls to any one individual. Do this by tapping Add a Contact on your T-Mobile phone. Type in the name of the person you want to call. Then tap Add Phone Number. Punch in *67 then the number.
   
4. Step 4 Tap the person's name to call him, when you have the person's number programmed into your phone with the *67 first. Every time you tap the person's name, you will be calling him from a blocked number.