Hi Apple! Since the latest iOS update, Xcode will no longer build to either of my iPhones (and they were all working great before). I have been developing for iPhones for 14 years. This is a new problem. It occurred once I updated each of my devices to the latest iOS operating system (15.4.1). Now, Xcode always shows "Failed to prepare device for development". I've restarted my Mac many times, updated to the latest Mac OS (11.6.5), restarted both phones several times, restarted Xcode. NOTHING (I've been working on iPhones for a long time and I know all the tricks) works to build to the phone. This has completely stopped my development for my two companies. Please list the steps you took to reproduce the issue: Connect iPhone to Xcode. Push run button from any iOS app. Xcode reports "Failed to prepare device for development". What did you expect to happen? App to get transferred and run on the phone. What actually happened? Development and all progress stopped with no resolution possible from us. I've submitted screenshots of two different phones, both updated to latest iOS. JUST before the iOS updates, things were working.