Device Compatibility
Last updated: June 18, 2026
Supported browsers
| Browser | Platforms | Versions |
|---|---|---|
| Google ChromeRecommended | Windows, macOS, Linux, Android, ChromeOS | Last 2 versions |
| Microsoft Edge | Windows, macOS | Last 2 versions |
| Mozilla Firefox | Windows, macOS, Linux, Android | Last 2 versions |
| SafariRequired for calls on Apple devices | macOS, iOS, iPadOS | 15.4 and later |
| Samsung Internet | Android | Latest |
| Brave / Opera (Chromium) | Windows, macOS, Linux, Android | Latest |
Supported operating systems
| Operating system | Supported versions |
|---|---|
| Windows | 10 and 11 |
| macOS | 11 (Big Sur) and later |
| Linux | Ubuntu 20.04+ and equivalent modern distributions |
| Android | 9.0 and later |
| iOS / iPadOS | 15.4 and later |
| ChromeOS | Latest stable |
Supported devices
- Desktops and laptops (Windows, macOS, Linux, ChromeOS)
- Tablets (iPad, Android tablets)
- Smartphones (iOS and Android)
- Installable as a Progressive Web App (PWA) — “Add to Home Screen” / “Install app”
Notes & troubleshooting
- JavaScript must be enabled — ch4t is a fully interactive web app.
- Cookies and local storage must be allowed; they keep you signed in and remember your preferences.
- Allow pop-ups for ch4t if a window (such as a call or auth screen) fails to open.
- Voice and video calls require granting camera and microphone permissions, plus a stable broadband or Wi-Fi connection.
- Push notifications require notification permission. On iOS/iPadOS, install the app to your Home Screen first to receive them.
- Private / Incognito windows may block PWA installation, notifications, and persistent sign-in.
- For the best experience and latest security fixes, keep your browser and operating system up to date.
Still having trouble? Reach out through the in-app support area and we'll help you get connected.