Can you clarify “don’t work well”? Screenshot would be nice.
Another possible reason is that mod is disabled/incorrectly installed. Normally you should list of loaded mods in console. Not sure how that works on Android. Another option would be to check file modSettings.json which describes all detected mods - make sure that fonts are present and enabled.
It is possible that this is caused by differences between PC/Android - broken rendering of true type fonts. Not much that can be done by us unfortunately. Try contacting author of Android port. Maybe he can figure things out.