"Smart call" is a term typically used to describe a telephone conversation that is well-thought-out, strategic and productive. However, there are numerous synonyms that could be implemented in order to replace this phrase. A few potential options could include "intelligent call," "savvy phone conversation," "wise discussion," or "strategic telephone chat." By utilizing these synonyms, individuals can communicate the same idea as a "smart call" but with different phrasing to keep the message fresh and interesting. Ultimately, it is important to remember that the art of communication lies in choosing the right words to convey your intended meaning.