String literal. A string literal or anonymous string is a type of literal in programming for the representation of a string value within the source code of a computer program.
As usual, the devil is in the details. For instance, with some prepaid wireless plans, your minutes are only good for a limited time, usually 30 to 90 days. If you don't use them before they expire, they are simply subtracted from your account anyway.
Unlimited talk & text features for direct US communications between 2 people. Pay-In-Advance & Simply Prepaid Monthly Services: Features available until 30th day; if sufficient balance, services automatically renew at expiration. If balance is insufficient to renew for 120 days, account will be suspended for 30 days.