As UI Testing is based on the visual appearance of the device, thus always conduct the test on a real device to learn all end-user challenges.
Early-stage requirements for the GUI are exceptionally change-prone, thus include manual testing to understand changes.
A usability test involves testing your application with real users. The best part is that the product is made for the end user, and you will get an honest opinion from them.
When Data-driven tests are conducted, the last set of data is added to the test script, which then executes the test repeatedly with different types of data.
There is a pool of OS and devices to target thus, compile the list of devices your users use to test its accuracy and identify any bugs.