Issue Type: Connectivity / Deployment Access / Potential iOS Compatibility Issue
Date Observed: October 23, 2026
Severity: Medium (multiple deployed websites inaccessible on one device)
Environment
- Device: iPhone
- Operating System: iOS 26.0.1
- Browser: Google Chrome for iOS
- Hosting Platform: Vercel
- Networks Tested: Wi-Fi and cellular data
- Affected Domains: Multiple unrelated
*.vercel.appwebsites
Description
Multiple websites hosted on Vercel display a completely white screen on my iPhone. After attempting to load, the browser eventually reports that the website took too long to respond.
The issue affects more than one unrelated Vercel-hosted website, making it unlikely to be isolated to a single application's codebase.
Steps to Reproduce
- Open a Vercel-hosted website using Chrome on an iPhone running iOS 26.0.1.
- Observe that the page remains completely white.
- Wait for the request to time out.
- Repeat using a different, unrelated
*.vercel.appwebsite. - Repeat on both Wi-Fi and cellular data.
Results
| Result Type | Behavior |
|---|---|
| Actual Result | The website displays a blank white screen and eventually reports a timeout stating that the site took too long to respond. |
| Expected Result | The website should load normally, as it does on desktop. |
Additional Troubleshooting Performed
- Tested multiple unrelated Vercel-hosted websites.
- Tested on both Wi-Fi and cellular data.
- Tested Chrome on iOS.
- Confirmed that basic WebGL and WebGL 2 tests work on the device.
- Confirmed that the official Three.js playground also displays a white screen.
Request for Investigation
Could you investigate whether this issue may be related to:
- Vercel deployment-domain connectivity on iOS.
- DNS resolution, routing, or TLS connection problems.
- JavaScript asset delivery or requests that fail to complete.
- Any known compatibility or infrastructure issues affecting iOS 26.0.1.
Please advise whether additional network diagnostics or a HAR/network trace would help identify the cause.
Supporting Information
Affected Deployment URL(s):
Failure Details:
- Approximate Time & Timezone: 11:22 EET / 23.10.2026
- Does
https://vercel.comload on the same device? Yes- Does the same deployment work on desktop? Yes