Mojo Identify Device
To tell if you are running on a Pre or a Pixie or some other future WebOS device use this call:
Mojo.Environment.DeviceInfo
It should give you back an object something along the lines of this:
{ "modelName": "Pr?", "platformVersion": "1.0.2", "carrierName": "Sprint", "serialNumber": "Unknown", "screenWidth": 320, "screenHeight": 480, "minimumCardWidth": 320, "minimumCardHeight": 188, "maximumCardWidth": 320, "maximumCardHeight": 424, "keyboardAvailable": true, "keyboardSlider": true, "keyboardType": "QWERTY", "wifiAvailable": true, "bluetoothAvailable": true }