Lots of unicode options for 'space' which can be found here: https://www.compart.com/en/unicode/search?q=space#characters Below is a test with different unicode options and how the spaces display on the iphone. <string>1&#x0020;2&#x00A0;3&#x2002;4&#x2003;5&#x2007;6&#x2008;7&#x2009;8</string> The space between 6 & 7 is a Punctuation Space that looks better than 2007. &#x2008;