How many devices can I install Phone Spector to? Stephan Grant April 04, 2018 05:57 Updated Follow One license key per device. Additional license keys can be purchased to use the software on multiple devices. Related articles Can Phone Spector be installed remotely? How do I receive the software after purchase? How do I see the information that is being stored? How Long can I use the software? How Long is the Installation Process? Comments 0 comments Please sign in to leave a comment.