A year ago when I upgraded my iPhone to the latest model, the computer technician who works on our business computers helped me with a couple of issues with which I was having problems. He doesn't know what happened, but he ended up importing my complete business address book email addresses into my iPhone and now I have over 4,000 contacts of customers I will never contact with my personal iPhone.
This presents a great problem for me each time I want to look up a personal contact, I have to wade through hundreds of names until I find the one I need. Is there a program that will allow me to work with this huge contacts list outside of the iPhone (such as on my regular computer with a large screen) and permanently delete those contacts that I don't need?