The phenomenon of teen sexting emerged as a result of the proliferation of digital technology. More than 40 studies have established that teen sexting occurs relatively frequently and is a rising trend, commensurate with the ubiquity of smartphone ownership in teens. Studies have shown that sexting is associated with incidences of increased sexual behavior. US state laws on sexting vary widely, from decriminalization to misdemeanor charges or prosecution for child pornography with harsh sentences.
Source: Teenagers, Sexting, and the Law | State-of-the-Art Review Articles | Pediatrics