two iphones are getting the same phone calls and text messages

Thanks for posting in the Apple Support Communities jefffromrodeo,

1: On your iPhone, go to Settings  > Cellular.

2: If your iPhone has Dual SIM, choose a line (below SIMs).

3: Do any of the following:

• Tap Calls on Other Devices, turn off Allow Calls on Other Devices.

(While enabled, this option allows other devices where you’re signed in with the same Apple ID to make and receive calls when they’re nearby your iPhone and connected to Wi-Fi.)

• Tap Wi-Fi Calling, then turn off Add Wi-Fi Calling For Other Devices.

(When enabled, this allows other devices where you’re signed in with the same Apple ID to make and receive calls even when your iPhone isn’t nearby.)

4: On your iPhone that you do not want receiving calls from other devices, go to Settings > FaceTime, then turn on FaceTime and Calls from iPhone.

You can learn how to re-enable the feature, here: Allow phone calls on your iPad, iPod touch, and Mac

To learn how to manage SMS/MMS forwarding options, check out this page: How to forward SMS/MMS text messages from your iPhone to your iPad, iPod touch or Mac

We hope this helps!