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.
Gold Line's prepaid phone card product line consists of many different cards. The term prepaid means that long distance minutes are purchased ahead of time, and used afterwards. You purchase your long distance phone card with a set number of minutes, and then use those minutes as you please after your purchase.