Don’t you have any option to choose the degree symbol?
To type the degree symbol, there is a built-in shortcut key and you can easily use (º) symbol. This symbol is normal used to write the temperature in ºC or ºF, or if you want to show the location co ordinates, you can use this key.
All you will need to do is long press Zero key and you will see degree symbol. Slide the finger on symbol and then release it, you will get the symbol.