import Telnyx from 'telnyx';

const client = new Telnyx({
  apiKey: 'My API Key',
});

const response = await client.simCards.getDeviceDetails('6a09cdc3-8948-47f0-aa62-74ac943d6c58');

console.log(response.data);

{
  "data": {
    "record_type": "device_details",
    "imei": "457032284023794",
    "model_name": "iPad Pro 11 2020 Cellular",
    "brand_name": "Apple",
    "device_type": "Tablet",
    "operating_system": "iOS 12"
  }
}