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 phone cards stock minutes for a set amount of money, usually $5, $10, $15, $25 or $50. The amount of talk time varies depending on the location of the call, fees and duration.here are even instant cards for purchase on the site that are ready for use immediately. No physical card is needed. These cards offer ten minutes of talk time for $7 and up to a maximum of 750 minutes for $37.50. International calls cost more.