Definition of derived. biology. : being, possessing, or marked by a character (as the large brain in humans) not present in the ancestral form derived features.
Using other AT&T Payment Options. 1  1. Pay your bill via the automated phone system. Dial 1-800-288-2020 to access the 24 hour-a-day telephone customer service system. 2  2. Speak with a customer service representative. Once you have verified your phone number, the phone system will ask you what you would like to do.
Call 800.901.9878 (611 from your AT&T wireless phone). Follow the prompts to say Refill. Follow the prompts to select your payment method (credit, debit, or refill card). If prompted, enter your 4-digit password (initially the last 4 digits of your wireless number). Follow the prompts to enter the refill amount.