Android IMO still functions perfectly on BlackBerry 10 phones. The apk file (version 9.8.000000007222), but NOT the latest ones (as of May 2018), is among some of the versions that work well.
Follow the tutorial on YouTube:

https://www.youtube.com/watch?v=DsBUDCaCpvY/
And here is the link for downloading the IMO apk 9.8.000000007222:
https://www.apk4fun.com/apk/150951/
If you have previously installed an IMO app on your phone, you may need to uninstall it with Ghost Commander before reinstall this older version. See how to uninstall an app with Ghost Commander here:
https://www.youtube.com/watch?v=VbvMNprszNY/
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