This article describes an issue where html forms and surveys are not text wrapped when being mailed and viewed in mail on iPhones.
This issue has been identified in EKTR-370 and is resolved in a cumulative update for 9.1SP3 and 9.2 SP2. However this fix will be to the following.
In siteroot\Workarea\controls\forms\template_buildDataValue.xslt by replacing line 49
<pre style="white-space:pre;word-wrap:break-word;"><xsl:copy-of select="./node()"/></pre>
<pre style="white-space:pre-wrap;word-wrap:break-word;"><xsl:copy-of select="./node()"/></pre>
As always make a backup of any file you modify for your immediate needs. You will also need to clear the cache and reset the site in IIS. For the downloads please see here.