Yes, the Apple AirPods Max can be used to answer phone calls. The headphones feature an array of microphones that can be used for phone calls and Siri voice commands, and the controls on the ear cups make it easy to answer and end calls. When a call comes in, you can simply press the Digital Crown on the right ear cup to answer the call, and press it again to end the call. You can also use the Noise Control button on the left ear cup to switch between noise cancellation and Transparency mode during a call, depending on your environment and preferences.