Phone sign in

Don't you mean the opposite? I can sign into multiple mobile devices but only one "computer" simultaneously....

Hello there,

Here is your answer:

https://support.zoom.us/hc/en-us/articles/360000787483-Can-I-use-Zoom-on-multiple-devices-

In Summary,  You can be signed in to Zoom on one computer, one tablet, and one phone at a time. If you sign into an additional device while logged into another device of the same type, you will be logged out automatically on the first device.  Hope that helps