So that the Community can help you better, we will need to know exactly which version of iOS is running on your iPhone. That, and any other details you'd like to give will help the Community better understand your issue!
If this is a time-sensitive matter, our US-based technical support team is standing by ready to help 24/7 via email at http://Canon.us/SupportCF or by phone at 1-800-OK-CANON (1-800-652-2666) weekdays between 10 AM and 10 PM ET (7 AM to 7 PM PT). We also encourage you to check out our Knowledge Base at that same link for answers to common questions.
Thanks and have a great day!
To set up your PIXMA MG3620 or wireless use with your iPhone, please follow the steps provided in this guide:
If you continue to have difficulties, please contact our support group using the following link: