Why real devices
An emulator has never fat-fingered a button.
Simulators verify layout rules; they do not reproduce a mid-range Android keyboard covering your form, a browser autofill breaking validation, or a slow connection racing your loading state. Real devices in real hands expose the conditions your users actually bring.
- Touch targets and keyboard overlap
- Browser and OS differences
- Autofill, zoom, and rotation behaviour
- Slow or unstable connections
- Small and large screen layouts