Check the App with different screen size
Apple enforces strict guidelines and size requirements for all iOS app screenshots.
Therefore, I use the simulator to check the App on different sizes of devices. Normally will check the screen size of 5.5 inches, 5.8 inches and 6.5 inches.
Use the tools: Trello
If there is a discrepancy between the interface of the application and the original design, I will have a record of the differences in Trello. It will be convenient for the developer to track every bug or issue. We will have a clear idea of when the problem has been fixed.
Use the tools: Jira
Another UAT tracking platform is Jira.
Here, a more detailed development log can be kept, and the development of different branches is processed and progressed.