Edit in JSFiddle

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head>
	<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
	<meta name="viewport" content="width=device-width, initial-scale=1.0"/>
	<title>Your Message Subject or Title</title>
	<style type="text/css">
		#outlook a {padding:0;}
		body{width:100% !important; -webkit-text-size-adjust:100%; -ms-text-size-adjust:100%; margin:0; padding:0;}
		.ExternalClass {width:100%;}
		.ExternalClass, .ExternalClass p, .ExternalClass span, .ExternalClass font, .ExternalClass td, .ExternalClass div {line-height: 100%;}
		#backgroundTable {margin:0; padding:0; width:100% !important; line-height: 100% !important;}
		img {outline:none; text-decoration:none; -ms-interpolation-mode: bicubic;}
		a img {border:none;}
		.image_fix {display:block;}
		p {margin: 1em 0;}
		h1, h2, h3, h4, h5, h6 {color: black !important;}
		h1 a, h2 a, h3 a, h4 a, h5 a, h6 a {color: blue !important;}
		h1 a:active, h2 a:active,  h3 a:active, h4 a:active, h5 a:active, h6 a:active {
			color: red !important;
		 }
		h1 a:visited, h2 a:visited,  h3 a:visited, h4 a:visited, h5 a:visited, h6 a:visited {
			color: purple !important;
		}
		table td {border-collapse: collapse;}
		table { border-collapse:collapse; mso-table-lspace:0pt; mso-table-rspace:0pt; }
		a {color: orange;}
		@media only screen and (max-device-width: 480px) {
			a[href^="tel"], a[href^="sms"] {
						text-decoration: none;
						color: black; /* or whatever your want */
						pointer-events: none;
						cursor: default;
					}
			.mobile_link a[href^="tel"], .mobile_link a[href^="sms"] {
						text-decoration: default;
						color: orange !important; /* or whatever your want */
						pointer-events: auto;
						cursor: default;
					}
		}
		@media only screen and (min-device-width: 768px) and (max-device-width: 1024px) {
			a[href^="tel"], a[href^="sms"] {
						text-decoration: none;
						color: blue;
						pointer-events: none;
						cursor: default;
					}
			.mobile_link a[href^="tel"], .mobile_link a[href^="sms"] {
						text-decoration: default;
						color: orange !important;
						pointer-events: auto;
						cursor: default;
					}
		}
		@media only screen and (-webkit-min-device-pixel-ratio: 2) {
			/* Put your iPhone 4g styles in here */
		}
		@media only screen and (-webkit-device-pixel-ratio:.75){
			/* Put CSS for low density (ldpi) Android layouts in here */
		}
		@media only screen and (-webkit-device-pixel-ratio:1){
			/* Put CSS for medium density (mdpi) Android layouts in here */
		}
		@media only screen and (-webkit-device-pixel-ratio:1.5){
			/* Put CSS for high density (hdpi) Android layouts in here */
		}
	</style>
	<!--[if IEMobile 7]>
	<style type="text/css">
		/* Targeting Windows Mobile */
	</style>
	<![endif]-->
	<!--[if gte mso 9]>
	<style>
		/* Target Outlook 2007 and 2010 */
	</style>
	<![endif]-->
</head>
<body>
	<table cellpadding="0" cellspacing="0" border="0" id="backgroundTable">
	<tr>
		<td>
		<table cellpadding="0" cellspacing="0" border="0" align="center">
			<tr>
				<td width="200" valign="top"></td>
				<td width="200" valign="top"></td>
				<td width="200" valign="top"></td>
			</tr>
		</table>
		<a href="http://htmlemailboilerplate.com" target ="_blank" title="Styling Links" style="color: orange; text-decoration: none;">Coloring Links appropriately</a>
		<img class="image_fix" src="full path to image" alt="Your alt text" title="Your title text" width="x" height="x" />
		<span class="mobile_link">123-456-7890</span>
		</td>
	</tr>
	</table>
</body>
</html>