Missing in letter Keyboard App Builder

hello there

I created a keyboard in Keyman and then turned it into an app in Keyboard App Builder
But there is a problem that when I download it on some mobile phones it does not show some characters
The app is now available on Google Play, but when downloaded from some mobile phones, it has that problem

Does anyone have this problem or know how to fix it?

unnamed

blessings,

Hello. It could be a problem with your code or, if this is a rare character, default fonts may not support the character. Does it actually output the character when you type? If it outputs something, even a square box, then the keyboard is probably working and it’s a font issue. You can include a font in a Keyman package and assign that font to the keyboard touch layout within the .kps file. However, I don’t know if that carries over to a KAB keyboard.

Without the source code I really can’t evaluate what is going on. Can you share your project? I don’t think you’ll be able to upload a zip file here, but you could zip up your project, upload it to Google drive or Dropbox or something like that and then share a link. If you prefer everyone not see your project, just send it to me in a DM.