Published onMarch 10, 2026When the Security Policy Blocks on the Client: iOS ATS and the Triple Invisibility Behind "Works on Simulator, Fails on Device"React-NativeExpoiOSATSMechanism-AnalysisATS rejects a request before it ever leaves the device — how this "client-side enforcement" security semantic stacks with fail-soft fallback and build-time-frozen config to disguise a network rejection as "the feature is disabled."