White screen or website is not displayed
If TheFlex shows only a white or blank screen on startup or when loading a page, follow the steps below to diagnose and fix the issue.
Step 1 - Check your WebView version
The most common cause is an outdated Android System WebView. Many modern web applications (e.g. SAP Fiori) require WebView version 80 or higher.
Where to check:
- In TheFlex: Settings → Device Information → WebView version
- In Android Settings: Apps → "Android System WebView" → App info → Version
Android 7-9 (Android N-P)
On Android 7-9, Google Chrome acts as the WebView provider instead of "Android System WebView". Update Google Chrome via the Play Store on these devices.
Step 2 - Update WebView
- Open the Play Store.
- Search for Android System WebView (or Google Chrome on Android 7-9).
- Install the available update.
- Restart the device and test again.
If no update is available in the Play Store:
- Check whether the Play Store is blocked by MDM or company policy.
- As a temporary workaround, the APK can be downloaded manually from a trusted source and installed via sideloading - make sure to select the correct architecture (arm64-v8a for modern devices, armeabi-v7a for older ones).
- Contact your IT administrator or our support team if you are unsure.
Step 3 - Check for other causes
If the WebView is already up to date and the problem persists, check for these additional causes:
| Symptom | Likely cause |
|---|---|
| Blank screen only on specific URLs | Content Security Policy (CSP) blocking scripts → see CSP article |
| Blank screen after TheFlex update | Clear app cache: Android Settings → Apps → TheFlex → Storage → Clear cache |
| Page loads on Wi-Fi but not on mobile data | Network/firewall restrictions |
| Blank screen with JavaScript errors in log | Check the app's built-in log viewer (Settings → Logs) |
Additional notes
- Devices with WebView below version 80 should be updated or replaced as soon as possible.
- See also: Requirements and WebView update