If you are upgrading from an "old" smartphone to the iPhone 6, then you might want to transfer your contacts. If you have decided to use the method “contacts transfer via Sim card”, then we will explain to you how you can import your contacts into iOS. There is a corresponding import function. You can find it here:
Open the settings on the iPhone 6 and then select: Mail, Contacts, Calendars
Scroll down a bit until you can see the entry "Import SIM Contacts". Tap on the entry. You can now select where the contacts are stored after the import. Choose your email account or the internal memory of the iPhone 6. Select the appropriate button.
Your contacts are now transferred from the SIM card to the iPhone 6. Finished!
You now know how to transfer contacts from your "old" smartphone to the new iPhone 6.