I was going over my bill and saw a number I didn't recognize, but apparently talked to for over 10 minutes. I checked the time and found the call in my Iphone's recent call list. It was one of my friends, but I only had her cell number in my contacts. When I looked up her contact info I saw that this previously unknown landline was now in her contact file.
This isn't really a problem, I'm just curious to know how this works. I tried to google this with no success and couldn't find it here in the forums. If anyone would like to take a moment to answer me, I'd really appreciate it.
Thank you!!