I want to share a Siri / Apple Intelligence issue I have been troubleshooting since the iOS 27 beta cycle, together with the configuration that finally resolved it.
The issue started during iOS 27 beta, continued across multiple beta builds, and was still present after I updated to the official iOS 27 release. Updating iOS alone never fixed it.
The main problem was that Siri / Apple Intelligence repeatedly failed to complete activation. Settings would remain stuck on:
“Adding support for Siri is in progress”
The Siri app would sometimes show:
“Siri is not available”
Siri also frequently fell back to the older floating-sphere interface instead of using the newer glowing-edge interface. Sometimes the new Siri interface would suddenly appear and work normally, but later it would fall back again.
The most repeatable symptom involved charging. When the iPhone was connected to power, Siri sometimes appeared to finish downloading and would temporarily work normally. After disconnecting the charger, Siri could become unavailable again or the system would behave as though Siri resources still needed to be downloaded.
Connected to power → Siri sometimes worked normally
Disconnected from power → Siri could return to downloading / unavailable
There was also a difference between Wi-Fi and cellular data. On cellular data, iOS sometimes said Wi-Fi was required to continue downloading Siri resources. After connecting to Wi-Fi, it would return to “Adding support for Siri is in progress” and still fail to finish.
Apple Intelligence storage also behaved abnormally. At one point, iPhone Storage showed approximately 7.37 GB in use. Later, the Apple Intelligence entry disappeared and storage usage decreased, then reappeared after changing language settings.
Before finding the working configuration, I had already tried restarting, Reset All Settings, Recovery Mode update, multiple iOS 27 beta builds, the official iOS 27 release, different Wi-Fi networks, cellular data, disabling VPN/proxy, changing languages, removing additional languages, switching between old and new Siri, and leaving the phone on Wi-Fi and power for long periods. None provided a permanent fix.
After repeated testing, the issue appeared to involve network transport, routing consistency, Siri language / voice configuration, Siri AI authorization, and local asset refresh.
My final working setup was:
System language: English (United States)
Region: United States
Siri language: English (United States)
Siri voice: American
Apple Intelligence enabled
Proxy environment: Shadowrocket
Proxy transport
My proxy node uses an AnyTLS-based configuration. Previously, UDP traffic was enabled. During troubleshooting, some Apple / iCloud requests appeared unreliable when using UDP / QUIC through this node, with timeouts, resets, or repeated retries.
I changed the node transport to TCP only while keeping TLS enabled:
TCP + TLS
After this change, Apple-related authentication and asset requests appeared much more stable.
Routing rules
This was one of the most important changes.
I use split tunneling so that Chinese apps can remain DIRECT while selected traffic uses the proxy. However, some Apple traffic was being matched by broader fallback rules such as:
apple.com,DIRECT
GEOIP,CN,DIRECT
This meant some Siri / iCloud / Apple Intelligence requests could use the proxy while related requests went directly through the local connection.
I added these high-priority rules and moved them above broader Apple / DIRECT / GEOIP rules:
DOMAIN-KEYWORD,gateway,PROXY
DOMAIN-KEYWORD,probe,PROXY
DOMAIN-KEYWORD,gdmf,PROXY
DOMAIN-KEYWORD,guzzoni,PROXY
DOMAIN-SUFFIX,iphone-ld.apple.com,PROXY
Rule priority was important. If broader DIRECT rules were above these entries, the specific traffic could still bypass the proxy.
After moving these rules to the top, the relevant Apple traffic consistently followed the same network path. Split tunneling still worked normally, and apps such as WeChat, Alipay, Meituan, and Xiaohongshu could remain DIRECT.
Language and Siri configuration
I standardized the Siri environment:
System Language: English (United States)
Region: United States
Siri Language: English (United States)
Siri Voice: American
I selected an American Siri voice, such as Voice 4.
After changing everything to the same English (US) environment, asset loading became more consistent.
Enable Siri AI
I manually selected:
Try Siri AI (Beta)
and completed the authorization process.
I also temporarily disabled “Require Face ID” for the standalone Siri app while troubleshooting. I cannot confirm that this directly affected the download, but it removed an extra authentication layer while testing.
Refresh local language assets
I opened Apple’s built-in Translate app, deleted the downloaded English (US) language package, and downloaded it again.
My goal was to refresh the local language / MobileAsset download state. I cannot confirm that Translate directly controls Siri’s generative models, but this appeared to help clear the remaining stuck asset state.
Final installation step
After making all of the above changes, I connected the iPhone to Wi-Fi and power, locked the screen, and left the device idle for approximately 10–15 minutes.
After this, the Siri / Apple Intelligence state finally changed and remained stable.
Current result:
Siri consistently uses the full-screen glowing-edge interface
Type to Siri works correctly
Siri no longer falls back to the legacy floating-sphere interface
“Siri is not available” no longer appears
“Adding support for Siri is in progress” is no longer permanently stuck
Apple Intelligence remains active
Siri continues working after disconnecting the charger
Split tunneling still works normally
Most importantly, the previous charging-related behavior is gone.
Before:
Connected to power → Siri temporarily worked
Disconnected from power → Siri failed again
Now:
Siri continues to work normally whether or not the device is connected to power.
I am not claiming that Apple has officially documented every domain or internal process above as the root cause. These findings are based on repeated troubleshooting and network behavior observed on my own device.
However, this issue persisted from the iOS 27 beta cycle through the official iOS 27 release, and standard system updates alone did not resolve it.
In my case, the successful fix only came after correcting the combination of:
TCP transport + consistent Apple routing + English (US) system / Siri configuration + Siri AI authorization + local asset refresh.
If anyone else is experiencing “Adding support for Siri is in progress,” “Siri is not available,” repeated fallback to the legacy Siri UI, Apple Intelligence storage disappearing / reappearing, or Siri working while charging but failing after unplugging, I would be interested to know whether the same configuration also resolves the issue on other devices.
