Server issues can time out connections and cause downloads to get stuck mid-way. In this case you just cannot do anything is the problem is with App store server. Part 2: Soft reset your device 5. Click on it to apps updating Iphone hang the app. If not, open the Apps updating Iphone hang Store, search for the app in question and tap on the stop button. Remove and re-install the app later. Method 6: This will resolve the iOS 12 app waiting problem without causing harm to your device.