Starting with Katalon Studio version 6.3.0, you can test your mobile applications on such custom cloud devices as Sauce Labs, BrowserStack, etc.
Katalon Studio supports running a Mobile script on both remote and custom cloud devices.
You can configure a remote device in 2 ways:
Project -> Settings -> Desired Capabilities -> Remote -> Enter the server URL, server type and desired capabilities.
Select Mobile Object Spy/Mobile Recorder -> Remote Devices. In the configurations field, click Edit. In the pop-up, users can enter the server URL, server type, and desired capabilities.
Please refer to this guide for details https://docs.katalon.com/katalon-studio/docs/mobile-testing-apps-cloud-devices.html#configure-a-remote-device