How to Transfer Contacts from iPhone to Computer for Data Backup?

Now, mobile phone is changing our lifestyle, especially for young teenagers, we use phones to playing games, watching videos, and playing music… Unlike computer has lots of storage space, phone has limited capability to store data, but it is convenience for us to searching and reading information with phone. So, we often face the problem: our phone warns on more free space, so we have to delete some videos, music, photos, and contacts to free up our phone. But, I guess no one is willing to do so, what we want to do is keeping our videos, photos and other useful data for us. Am I right?

Now, I will teach you 4 ways to backup phone data safe and free up phone space. We take manage iPhone contacts as an example. Keep reading to find more information.