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.
Prepaid Cards: Most of these cards charge a monthly fee, and may charge other service fees. For example, there may be a fee to reload money, withdraw funds at an ATM or even to receive a paper statement. Expiration Dates. Gift Cards: Cannot expire in less than five years, per the CARD Act. However, if fees are charged after the first year, they can erode the balance. Prepaid Cards: The Federal Reserve reports that the average prepaid card is active for six months or less.