Found this in the driver app under Help After August 30, 2016, Uber's partner app will only be available and supported for iOS devices using iOS 8 or above. iPhone 4 and most iPhone 4S devices will no longer support the Uber partner app. iPHONE 4 AND 4S Please upgrade your device as soon as possible. You may not be able to go online after August 30. Please note that if you have an 8GB iPhone 4S, you may be able to upgrade your operating system instead of upgrading to a new device. UBER-ISSUED DEVICES If you are using an iPhone 4 or 4S issued by Uber, please return it to us. You will need to use your own device instead. Note that Uber does not charge a weekly fee when you use your own device. iPHONE 4S, 5, 5C, 5S Please check that you are running iOS 8 or higher. You may need to update your operating system. RECOMMENDED For an optimum experience with the partner app, we recommend using an iPhone 5 or newer, or an Android device running Android 5.0 or newer.