I'm developing an update to one of my apps, Nightstand Weather Clock, that includes features that are only available on the iPhone, such as vibration. I don't have an iPhone (only an iPod touch) so I can't test these myself. Would anyone with an iPhone care to help me with this? If you do, please reply with your device UDID. You can find this in iTunes by selecting your iPhone in the Devices menu on the left and going to the Summary Tab at the top if it's not already selected. Here, you should see your serial number. Click on it to show your iPhone's UDID. Thanks for your help! When I have 2 or 3 people's UDIDs, I'll put an Ad hoc build of the app as well as the required provisioning profile in my dropbox public folder, and show you how to install the app.