
Mobile FIRST is praised for its intuitive and accessible interface, making it a valuable tool for mobile testing. Users appreciate its ability to simulate various devices, including older models, and its features like screencast recording and dark mode testing. While some functionalities overlap with existing devtools, the clean UI and ease of use set it apart. Users find it particularly useful for optimizing websites without the need for sign-up, and it has become an essential tool for many, including product managers, for daily tasks and presentations.