Most of the users have a query on call log/ Call history showing all incoming call or missed call that has been actually called on another iPhone (Devices). So many time users asking in support like iPhone showing fake call log, Showing all out going call in iPhone that’s are linked with common Apple ID. In this case here are some common mistake made by most of the iOS users running in iPhone 5/ iPhone 5S/ iPhone 6/ 6 Plus/ 6S and 6S Plus.
Fixed: iPhone showing fake call log or Calling history in iOS 9, iOS 8, iOS 7
Check and verify your device up to date with the latest iOS version
Go to the Setting > General > Software Update in your iPhone/ iPad, Latest iOS version is iOS 9.0.1, because apple always tried to solve bug fix with latest iOS version.
Don’t use same iCloud login detail on other iOS device
If possible, Don’t use same apple ID on another devices (Family device) or Your Friends and Collogues. Many times you have to try or used your apple ID on another iOS device for temporary use (install app).
Hand Off is Alternate features:
Hand off is new and very useful features coming from iOS 8, so you can easily move your task from one iOS device to Mac or Other device. In that case, you don’t need use your Apple ID/ iCloud ID on another device.
So you have to disable Hand Off in your iOS device, Settings > general > hand off and Suggestions > Turn Off.
Some are trying: found cheerful result
In the case share apple ID, You have to use family sharing to connect your all Family’s device.
Have you tried any other alternate solution on iPhone showing fake call log and worked for you then share with us!