Does RoboKiller work outside of the US? Nate J. September 15, 2017 21:33 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 Does RoboKiller work on my landline? What carriers are compatible with RoboKiller? How can I disable RoboKiller on my phone? Will RoboKiller stop 100% of my robocalls/telemarketing calls? What's going on with my Verizon voicemail? Comments 0 comments Article is closed for comments.