@JacqiRachael 

Thank you for the feedback.  Tapo APP allows logging in tp-link account on multiple phones, if a second mobile device needs the full permissions of camera, like Talk/ Voice Call etc., you could try to log in admin account using same email address and password on that second device. Hope this helps!

Here is an FAQ explaining shared account permissions:

How to share your Tapo smart devices (smart plug, smart camera, smart lighting) with your families

'Shared account permission' is one of Most Popular Feature Requests for Tapo, it is recommended to comment / vote for this feature in the thread directly or leave the request in feature request board , in this way users who are interested with this feature could vote or comment for it, that will help us organize your feedback and share them with our team feature evaluation! Thank you.