Actually ported over, albeit in a very experimental state. Code may exist in repos.

https://www.youtube.com/watch?v=Dkse2T56ISg

https://openzeebo.forumeiros.com/t114-port-experimental-do-android

Postulated, but mentioned at least sometimes.

https://openzeebo.forumeiros.com/

https://github.com/tripleoxygen/openzeebo

https://openzeebo.forumeiros.com/t11-faq-leia-antes-de-postar

Looks interesting and cingular-esque.

https://www.youtube.com/watch?v=_wbm9ieJh90

https://www.youtube.com/watch?v=urHAhUOiJFs

https://www.youtube.com/watch?v=YG4PJyLdXmE

https://www.tripleoxygen.net/wiki/console/zeebo/zeebo_software

Opera Mini browser for Zeebo helps enable users toaccess all of their favorite Web sites

What came with the system, allowing internet browsing over 3G.

https://www.youtube.com/watch?v=N2kURSXdWbQ

https://press.opera.com/2009/12/01/zeebo-and-opera-bring-the-internet-cafa-into-emerging-market-living-rooms/