How to get my mobile contacts from the old sim into my IPHONE 5C?

I bought a new IPhone 5C. I need to get all my mobile contacts from my old Sim into the IPhone.

I have saved it in a csv file now how do i copy it into my iphone?

my old phone is a Nokia N8.

You can upload the file on your iCloud account and then sync your phone with your iCloud account. Login to your iCloud account from your PC or Mac and Import contact from the CSV file. Then login to your iCloud account from your phone and it will automatically sync contacts and everything.

If the contacts are still on your SIM and you've trimmed it to nano-SIM, you can just copy the contacts from your SIM to your iPhone. Follow there steps: Settings > Mail, Contacts, Calendars > Import SIM Contacts.