SMS HTML Button

Hi everyone. I designed an HTML template to send out to over 140k customers however, I've run into an issue I just can't seem to figure out. In the email is an HTML Button to send a text message with a pre-written message, that has always worked for Android and iOS. Now during testing, it's not working on iOS and no matter how I alter it, it's not clickable on iOS. Please help me!

<a href="sms:/+11234567890?&body=Hello! I would like to place an order!" class="btn" title="">Text US</a>

Here is a link to the code to edit and test.

http://tpcg.io/_302Q2L

I've tested on iOS v16.3.1

SMS HTML Button
 
 
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