Why do my wife's missed calls show up on my phone

[iMore Question]

Mixed in with my calls I get both her missed and made calls

 

[SwitchBeach]

Are you sharing the same Apple ID?

If so, you need to use separate Apple IDs.

You can share an ID for iTunes if you wish or you could set up Family Sharing.

 

[Ledsteplin]

Yes, you can share the iTunes ID. But iCloud, iMessage and Facetime ID's should be your own.