The tablet segment contains the most modern tablet browsers like Chrome 49+ , Firefox 49+ and Safari 10+. This covers iOS 9+ and Android 4+.
Tablet are defined by a display size larger than 6". However this is more of a guideline, than a strict rule. There are some phones out there, that are more than 6" but where resolution, performance or even assumed user expectation, clearly makes them a phone. Those devices are indexed as phones, despite their large screen.
The reason why the minimum width is only 600px is because Samsung released a series of popular tablets with a 600px resolution in portrait mode.
As of December 2017 this segment represents ~80% of the tablet browsers and ~4% of all browsers (across all device types).
The tablet segment is defined by the following criteria:
- Primary input method is touchscreen
- Browser supports the tablet segment requirements
- Screen width of a minimum of 600 pixels
- Screen is more than 6 inches
The tablet segment supports the following features:
- Web audio
- ES6 Classes
- CSS Animations
- CSS 3D Transforms
- CSS calc()
- Clipboard API
- File API
- FileReader API
- Mutation observer
- Offline storage
Check out the complete feature support on caniuse.com.