generally speaking, icons should be discussed in your phone's manual. What kind of phone is it and what is the icon?
there is likely a manual that you can download for your specific device. if the icon is related to an app that you have downloaded then it won't be in the manual.....but if it is part of your specific device, then most manuals have a page that show all of the icons it uses and what they are. if you google "your device" and "manual" you should find a download for your manual.
The phone is a LG Cosmos2. I don't find anything in the manual about icons/what they mean. I did figure out what the current icon that is showing is but am interested in what others I may encounter.
On my ENV3 I can hit ok then go to 9 and then phone info and there is an icon glossary in there. Mary