Step 1 Install TunesGo software on your computer
Install the computer to TunesGo software on your computer and connect your iPhone to the computer with a USB cable. The transfer will detect your iPhone model and show its information on the main window as the sample below.
Note: You should have iTunes installed on your computer to ensure that the transfer process runs well.
Step 2 Copy contacts from computer to iPhone
Click the “Contacts” tab in the left column. The contact management window will be displayed. Click “Import/Export” button on the top line, choose “Import contacts from computer” when the pull-down list shows.
Select from which you want to import your contacts. For example, you can choose “From vCard file”. When the file browser window appears, you can choose the file that contains contacts. Then the program will copy the contacts from computer to iPhone.
When it's done, you can check the contacts in the contact management window. You can delete the duplicate contacts on your iPhone by clicking “De-duplicate”. Choose a match type and select the duplicate contacts you want to merge. Hit the “Merge Selected” at the low right corner. That's it! All the contacts are well transferred.
With this mighty tool, you can transfer and manage contacts from computer to iPhone easily. If you decide to buy a new iPhone, you can also transfer contacts from iPhone to computer before you sell the old one.