 1999, a nod to the Prince song of the same name. For more on these and other stories, visit knsiradio.com, where you can also sign up for the daily newsletter. I'm Jake Judd, KNSI News. You've probably heard that cell phone service with Pure Talk is half the cost of Verizon, AT&T, or T-Mobile. Just $20 a month for unlimited talk, text, and plenty of data. You might be thinking, what's the catch?