In devtodev you can mark a device as a test device. You can do so in the Users & Segments section or in Settings -> SDK -> Test Devices.
The system will exclude from the reports all incoming events from the test devices (except Real-time dashboard). You can check the evets in Settings -> SDK -> Integration -> Event Log or in the Users & Segments section.
In the Users & Segment section you can find a specific user using filters. For example, search a specific Advertisig ID or IDFA.
Open the User Card and mark the User as a Tester.
You can check and configure your list of test devices in Settings -> SDK -> Test Devices.