transfering contacts from lumia 640 to iphone6s

Check this out: Move from Android to iPhone, iPad, or iPod touch - Apple Support

That should help you move contacts and anything else that's moveable!

Scratch that, just realized thats a windows phone 😮

YOu can download programs in ur laptop like itools or wondersharemobile it will help

All you should have to do is add your window's email count you used on your Lumina to iPhone iPhone in Settings > Mail, Contacts, Calendars > Add Account.

http://www.iphonehacks.com/2013/09/switching-from-windows-phone-to-iphone-5s-5c- how-to-transfer-data.html