Custom icons (built with icomoon) does not work in SOME Android versions


I have built some custom icons using icomoon which works fine in Chrome, iOS and some Android versions (4.3 or above), but when I run it on Android 4.1, it displays strange characters, but other default ionic icons still working properly.

Could the ionic team share all the EXACT settings when building custom icons with icomoon, I guess it will save us a lot of time on trial & error by using 5 minutes to post the print screens / settings. Thanks in advanced.

The settings mentioned in are just little and outdated now.