Change text of “Return” keyboard button

Unfortunately, you can change “Return” into only one of these predefined labels with the returnKeyType property:

• Return (default)
• Go
• Google
• Join
• Next
• Route
• Search
• Send
• Yahoo
• Done
• Emergency Call
• Continue (as of iOS 9)

So maybe you should choose “Next” if a data entry kind of activity is what you’re after.

More information here.