While Testing in Litmus Apple iOS-Devices convert my text into an annoying icon.
This is an excerp of my code after inlining:

<center data-parsed="" style="min-width: 532px; width: 100%;"><a href="#" align="center" class="float-center" style="Margin: 0; color: #FFFFFF; display: block; font-family: Helvetica, Arial, sans-serif; font-weight: normal; line-height: 1.3; margin: 0; padding: 5px; text-align: center; text-decoration: none;">MEHR     <span style="font-size:14px;">▶</span></a></center>

Thi is how it looks like before inlining:

<center data-parsed=""><a href="#" align="center" class="float-center">MEHR     <span style="font-size:14px;">&#9654;</span></a></center>
Screenshot