Q: How do I clean up Documents and data?

Hey streifeulv,

It sounds like you want to know how to free up some storage on your iPhone that's showing as being used by being used be Documents & Data in iTunes. The article below describes the types of data that is stored in each data content type and should help you free up the storage space on your device. 

Check your storage on your iPhone, iPad, and iPod touch - Apple Support

Ciao.