The loop that changed how I write mobile tests

Mobile tests are where the bugs actually live. A signup flow that works on an iPhone 15 falls apart on a lower-end Android because the keyboard pushes a button off-screen. A push notification mid-flow leaves the app in a state nothing else reproduces. Memory pressure on a four-year-old Android does things you can't make a simulator do. I wrote simulator-only tests anyway, for years. Real-device runs took ten to thirty minutes per cycle, the device farm queue was unpredictable, and CI on physical