Mobile apps are important for today’s enterprises as they continue to be the major business enablers. It is critically important that these mobile apps should function seamlessly at all times. Typically, these mobile apps should be tested for their functionality, usability, accessibility, consistency, performance, etc. Evidently, mobile app testing plays an important role in the overall mobile app development process. Mobile app testing helps identify various types of bugs that affect the functionality, security, and reliability of apps to ensure a seamless experience (UX).
https://www.testingxperts.com/blog/testing-on-real-devices-vs-simulators-vs-emulators/ca-en