Arabic/Hindi/etc support for Android?

I have my custom font style and set as dynamic font in its import settings. When I write an Arabic or Hindi words, it is shown in editor. But when it comes to phone, it is shown in some phones but not in others. That is because of dynamic font I know. But what is the best solution for supporting Arabic or Hindi alphabet when I want to use my custom font style? Is the solution looping through all texts,labels,etc that I use in my game and set an Arabic font when user wants to see arabic? Same for Hindi?...