Description'Click to Symbols' app allows fastly inserting lots of different special chars to your messages everywhere. Just open the app and select a symbol - it will be automatically copied to the clipboard. App can be attached to the system bar or to the search key. Simeji is also supported. Less clicks, more convenient!
P.S.: there's also a huge char tables, you can enable it in the settings. Some chars in these tables aren't supported by all Android phones. Some custom ROMs, such as MIUI, can display its.
P.P.S.: if you have anything to say - please leave a comment, I'll be pleased! :)