How can I assure of the proper rendering of emoticons in my blog?

My blog has certain emoticons in between but they are not showing properly in Opera Mini. How can I assure of their proper rendering?

Emojis are so trending that they got themselves a movie (ok! not a good one though). These symbols hold great significance in our day to day life. Since most of the teenagers spend more than 90 hours per month online, it becomes extremely important that you understand their need and make emojis part of your website’s cross browser agenda.

Cross Browser compatibility is extremely important as you wouldn’t want your content or layout to suffer because of it. Opera mini is one such troubled browser that often lack support for majority of new technological features.

If you want to read in detail then I suggest you follow the link below.

Emoji Compatibility With Browsers