As an AI language model, I can provide you with information about the Apple iPhone 14 Pro Max, but I cannot unlock devices or provide specific device availability or pricing information as it may vary based on location and service providers. However, I can give you some general information about the iPhone 14 Pro Max and eSIM usage.

The iPhone 14 Pro Max is a flagship smartphone released by Apple. It features a large 6.7-inch Super Retina XDR display, an A15 Bionic chip for enhanced performance, a triple-camera system, and support for 5G connectivity.

Regarding the eSIM functionality, the iPhone 14 Pro Max supports eSIM technology, which allows you to use an electronic SIM card instead of a physical SIM card. With eSIM, you can activate cellular service from compatible carriers without needing a physical SIM card. This feature provides flexibility, as you can switch between carriers or add a secondary line without the need to physically insert or remove a SIM card.

To activate eSIM on your iPhone 14 Pro Max, you'll need to contact your carrier to see if they support eSIM and provide you with an eSIM QR code or activation details. Once you have the eSIM activation information, you can go to Settings > Cellular > Add Cellular Plan on your iPhone to scan the QR code or manually enter the activation details to set up the eSIM.

Keep in mind that the availability and compatibility of eSIM functionality can vary depending on your region, carrier, and specific iPhone model. It's always recommended to check with your carrier for specific details and requirements regarding eSIM activation on the iPhone 14 Pro Max.