Does RoboKiller work outside of the US? Nate J. March 23, 2018 18:14 Updated Follow Sorry, but RoboKiller is only for iPhones on Verizon, AT&T, Sprint, and T-Mobile users in the US and Puerto Rico. Related articles Why does RoboKiller need my phone number? How much is RoboKiller for iOS? Does RoboKiller work on my landline? Comments 0 comments Please sign in to leave a comment.