Need more info
Originally Posted by basswiigee
The phone does not give the option to move unused apps to the sd card or to erase unused apps
What do you mean here... It sounds like your saying you have to "use" the app first in order for it to be moved or erased? Which im sure is not the case.
Respond with details of what ROM/ android version, build, memory option, etc. These are things needed to know before any help can be given because suggestions vary especially if you are rooted.
... But try this first, go to settings --> Storeage --> Internal memory and respond with either a screen shot or details if privacy is an issue. I would figure you will find the 'heavy' items there to delete... usually multimedia and not apps are the culprit.