How many channels can I register with a mobile device for push? Craig Conover December 08, 2020 14:05 Updated There are no limitations to the number of channels you can register for push notifications with PubNub. Related articles How do I register a device with a channel? What devices support APNS? How can I troubleshoot my push notification issues? Can I build threaded messaging app using PubNub? How do I add a channel to a channel group?