To ensure your device and mobile operator are compatible using Cellimation, we encourage you to download/install our test program before you sign-up. Palm Treo users do not need to perform this test as the Treo has already been certified to work. You test your device by downloading a small test program ("Cellitest") over the Internet and verifying all the necessary functions work acceptably. The simple steps below guide you through the download/installation procedure. If your mobile operator is Sprint PCS, then you must first "enable" your device so that software can be loaded on it. Click here for instructions. On your mobile device, browse to test.whdc.tv. Download the Cellitest software. Cellitest Instructions.