Capacitor Angular app shows blank screen on some Android devices

Question

I'm developing a web and mobile app called Bibliocards using Ionic, Capacitor, and Angular. The app works fine for most users, but a few have reported that it only shows a blank screen on Android devices (e.g., Samsung S22 and a Samsung tablet). The same issue occurs both in the mobile app and the web version when accessed through Chrome.

What I've tried so far:

• Restarted devices: No change.
• Cleared cache: Didn't help.
• Updated Android System WebView: Up-to-date.

Technical details:

• Framework: Ionic + Capacitor + Angular
• App Type: Web + Mobile
• Android versions affected: Android 12/13 (so far)
• Devices with issue: Samsung S22 phone & Samsung tablet (unknown model)
• Website: Affected as well

Observations:

For most users, the app works fine.

The black screen appears immediately after launch—no splash screen visible.

No content is rendered; just a persistent black screen.

Questions:

1. How can I better debug this issue remotely on a user’s device? I'm planning to implement Sentry.

2. Are there known issues with Capacitor/Ionic and Samsung WebView?

3. Could it be related to specific WebView settings or device configurations?

Any advice or insights would be greatly appreciated! Thanks in advance for your help.