Text doesn't fit

It seems to me that the text I use for buttons often doesn't fit (on Samsung mobile devices). See example.

The bigger the character, the bigger the problem.

I suppose I could use fixed button sizes, but I have no idea what the rsult will be on different devices, depending on different screensizes...

Could you send an example very simple app (send the project aia file) that illustrates the issue.  Also say what you expect to happen.
Just follow up in this thread and attach the project file.