It is possible to forward calls to another phone number even if you don't have access to the phone that is receiving the calls. Here's how you can do this:
Contact your phone service provider: Contact your phone service provider and ask them to forward your calls to another phone number. Most phone service providers offer this service and can help you set it up.
Use call forwarding on your phone: If your phone has call forwarding feature, you can use it to forward calls to another phone number. To do this, you will need to access the call forwarding settings on your phone. The process for doing this may vary depending on your phone model and operating system.
Use a call forwarding app: There are several call forwarding apps available that allow you to forward calls to another phone number. These apps typically require you to install the app on both your phone and the phone that will be receiving the forwarded calls.
It's important to note that these methods may incur additional charges or fees from your phone service provider. Be sure to check with your provider for details on any applicable charges.