MagicJack today launched a premium version of its magicApp for iOS, which promises to turn any Wi-Fi or 4G iOS device into a mobile phone.

For $2 per month (or $15 per year), magicApp premium users can get a US phone number, unlimited local and long distance calling to the US, Canada, Puerto Rico and the US Virgin Islands, and unlimited text messaging to any US mobile number.

The premium service will be free for customers already using magicJack’s home and business services.

MagicJack’s first move into disrupting mobile service comes after the IP calling service originally launched in 2007.

VoIP offerings from MVNOs like FreedomPop and ISPs like Cablevision could potentially pose a threat to wireless providers.

T-Mobile and Sprint, lacking the same coverage of AT&T and Verizon, have been expanding the number of devices capable of placing calls over Wi-Fi.