I’m building a SwiftUI app that fetches public JSON data using URLSession.shared.
The request works correctly in the iPhone 17 Pro Max Simulator, but fails on my physical iPhone 16 Pro Max running iOS 27 beta.
Endpoint:
https://api.jolpi.ca/ergast/f1/2026/driverstandings.json?limit=100
Error:
NSURLErrorDomain Code=-1009
“The Internet connection appears to be offline.”
NWPath:
unsatisfied (Denied over Wi-Fi interface)
Resolved 0 endpoints in 1ms
The device can access the endpoint through Safari, and the same request works in Simulator. VPN, cellular permissions, Wi-Fi changes, and ATS settings have been checked.
Could this be an iOS 27 beta networking regression affecting URLSession on physical devices? Are there recommended workarounds or diagnostics?
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