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... Skiadas said that a "very low single digit percentage" of Verizon's gross phone customer additions in the first quarter signed up for its new $10-per-month second line, which allows customers to route another phone number to their existing Verizon phone. Skiadas said Verizon sees a "limited market" for that kind of offering but that such services generate high margins for Verizon. ...
AT&T and T-Mobile offer similar second line services. T-Mobile has been offering its $10 per month Digits service for years, allowing customers to move their numbers around to various devices, including having two numbers on one phone. AT&T charges users $30 a month to add a line. ...