How to change the tag for displaying smiley/emoticons so that the same smiley/emoticon could be displayed on smart devices?

I'm basically a PHP developer by profession. I've no idea about iOS and Android coding at all.

I've developed an API in PHP which returns some data. This data is used by website, iOS app and Android app.

For example, if we take sample output of one such data element it would look as follows :

$feed_status = How are you all boys <img src=\"http://ift.tt/1BZQwnH\" alt=\"Smile\" title=\"Smile\" title=\"v_middle\" />;

If I show this data on a website the smiley/emoticon looks perfect as the <img> tag has got the path for concerned image.

But my issue is when the same data(smiley/emoticon) is displayed on iPhone and Android devices the <img> tag displays as it is. The respective smiley symbol doesn't get appear on these devices.

If you hit the URL : http://ift.tt/1BZQwnH in your browser you could see the respective smiley image.

I want to show the same smiley/emoticon image on smart devices running on iOS and Android. How should I do this? Can someone please help me by providing efficient and optimum solution for this?

Thanks for spending some of your valuable time in understanding my issue.

If you need any further information regarding the issue I'm facing please do let me know. I'd be more than happy to convey you the same.

Thanks in advance.