Can I change my ookyo number? ookyo September 24, 2017 06:31 Updated Follow No, but you can take up a new line. You can register up to 10 numbers under one IC/Passport. Related articles Can I transfer ownership of my ookyo number to another person? How do I terminate my account? How do I pay for my ookyo plan? Do the ookyo app and VPN use a lot of battery? What is roaming and how do I roam with ookyo?