how to make two phones ring at once?

There are a few different ways you can make two phones ring at the same time:

1. Call both phones simultaneously: One way to make two phones ring at the same time is to call both phones at the same time from a third phone. This can be done by using a feature like call forwarding or by using a group call or conference call feature on your phone or through a third-party service.

2. Set up call forwarding: Another option is to set up call forwarding on one phone to redirect calls to the second phone. This way, when a call comes in to the first phone, both phones will ring simultaneously.

3. Use a messaging or communication app: Many messaging and communication apps, such as WhatsApp, Skype, or Facebook Messenger, have features that allow you to make calls to multiple devices at once. You can use these apps to call both phones simultaneously.

4. Use a third-party app or service: There are also third-party apps and services available that allow you to make calls to multiple devices at once. These apps typically require you to install the app on both phones and then use the app to initiate the call to both devices simultaneously.

Overall, the method you choose will depend on the specific phones you are using and the features available on those phones.