Hello, i want to free up space in main memory. thru a root explorer i was able to access the app folder. My questions is: is .apk file required to run an app or just to install one (like setup files)? Also same question for .odex files. i want to delete the files of unwanted softwares like SCVNGR, TWITROID, LAYAR etc which cannot be removed thru the default uninstaller. Another question: is deleting an app same as uninstalling? if i delete an app from app folder will the phone give some error like "file not found" every time i turn on the phone if that app was on startup list (which does not happen if its properly removed)? Any help would be greatly appreciated.