Mobile testing is crucial for delivering a superior mobile experience. Android and iOS have distinct differences in their architectures, which impact testing challenges. OS version fragmentation adds complexity to testing on Android, with six versions used by around 7% of users, compared to two versions used by more than 6% of iOS users. Device fragmentation is also significant on Android, with a wide range of devices and screen sizes to account for. This can lead to issues with backwards compatibility, usability, and performance. The Google Play Store has less strict review processes, making thorough testing essential for iOS app distribution. To simplify the mobile testing process, organizations can use cloud infrastructure platforms like Sauce Labs' Real Device Cloud, which eliminates the need for a device lab and increases testing efficiency. Mobile testing frameworks like Appium also help with cross-platform testing by allowing single scripts to run on multiple platforms.