@626262abc Hello. You posted this in the AT&T Digital Life forum and normally I do not have the knowledge to answer wireless questions, however , in this instance I can answer this for you as we use the same information for Digital Life. A credit check is required to obtain service and to determine if a deposit is needed for the service or not. All wireless carriers require a credit check for monthly service with exception of some prepaid services. The drivers license is to verify the identity of the account holder so that no one can open an account fraudulently in someones name.
*I am an AT&T employee, and the postings on this site are my own and don't necessarily represent AT&T's position, strategies or opinions.