In what ways can I separately manage entries in Contacts.app and SIM card contacts?

I have some basic questions in my mind and ofcourse, I should ask them to know the things. - Can I import/export contacts from/to sim card? - Is it possible to view the contacts that are stored in sim/iPhone separately? - Is it possible to choose the default memory storage for contacts? - Is it possible to delete all contacts from sim/iPhone (or maybe both)by one click?