From Xojo Documentation

Property (As Font )
aMobileTextControl.TextFont = newFontValue
FontValue = aMobileTextControl.TextFont

New in 2020r2

Supported for all project types and targets.

A Font object that provides information about the control's font name, font size, and more.

Sample Code

From any of the control's events, this example changes the font:

Me.Font = Font.BoldSystemFont(20)

See Also

TextColor and MobileTextControl.Text properties.