Me and this guy's phone keep calling eachother on its own. When mine calls his it's in his call history but not mine and vise versa. The scary thing is, we live in the exact same town and we don't know eachother. What is happening?

Your phones may be close cousins and just want to talk over their histories

since leaving the factory. Perhaps if you don't want them to do this, change

your settings; see if they are associated in iCloud. Change the password.

• Change your Apple ID password - Apple Support

• iCloud: Change your password

Since I don't have the kind of problem and had not heard of these phones

getting together I am sure someone can relate to changing the settings to

make your iPhone more secure; or disassociate it with other numbers, etc.

• iPhone - Apple Support:

http://www.apple.com/support/iphone/

• Security and your Apple ID - Apple Support

• Privacy - Manage your Privacy - Apple:

https://www.apple.com/privacy/manage-your-privacy/

• iCloud - Apple Support:

https://www.apple.com/support/icloud/

There are several levels of security beyond most casual user's notice.

• Product security certifications, validations, and guidance for iOS - Apple Support

So the answer is likely in your settings; privacy, security, & sharing; among others,

to include iTunes, Music, internet settings, etc. that allow others access.

Sorry to not be of much help specific to your issue.

Good luck in any event! 🙂

are you using an app you installed which can do something as you describe?