Surely not. Clearing cache is usually a process that helps you in removing up the different temporary files from your cache. The process doesn’t have to do with the deletion of any kind of data being stored in the internal memory of your smartphone or external storage such as your logins, settings, saved games, downloaded and clicked photos and conversations, etc. One can easily clear up the cache of the gallery or camera app of your smartphone as well to free up the memory space from there.