How do I stop my IPhone 5s from receiving my IPhone 6 calls - both phone ring when someone calls my IPhone 6
You are using the same AppleID/iCloud on each phone, that is why it is happening.
Option 1 - Use different AppleID for each family member and connect them together with Family Sharing (preferred)
Option 2 - go to settings/Facetime and turn off iPhone Cellular Calls
