We Have Different Phone Numbers, Why Are Our iPhones Ringing at the Same Time?
We Have Different Phone Numbers, Why Are Our iPhones Ringing at the Same Time?
We Have Different Phone Numbers, Why Are Our iPhones Ringing at the Same Time?
Are these FaceTime calls and both phones signed into the same Apple ID?
Otherwise, contact your carrier.
stop using the same appleID using family sharing you can still use the same apps bought on the various appleID's
Go to Settings > Facetime > Cellular Calls, and set it to Off.
As has been explained on these forums dozens of times already, disable iPhone cellular calls in the FaceTime settings, then next time search before posting.
We Have Different Phone Numbers, Why Are Our iPhones Ringing at the Same Time?