Screenshots

Capture the device screen from your computer. You do not need to touch the device, and images are not saved to its photo library.

Take a screenshot

1. Select the device.
2. Click Capture.
3. The image is saved to the folder you selected.

The screenshot is the actual screen at native resolution.

Take screenshots on a timer

Set an interval and a number of screenshots. KeyMob captures the screen repeatedly while the device is in use. Common uses:

Catching intermittent issues. A flicker that appears once in twenty scrolls is hard to capture by hand but easy to catch at 500 ms intervals.

Documenting a flow. Capture a full onboarding flow as an ordered, timestamped series.

Monitoring a long-running process. Capture a sync, upload or migration every ten seconds and review the series afterwards.

Recording a session remotely. The device can be in a test rig, in another room, or connected over Wi-Fi while someone carries it.

Compared with on-device screenshots

Pressing the side and volume buttons works for a single image. It is less suitable when:

• Both hands are needed to reproduce the bug.
• The button press interrupts what you are capturing, such as a drag, a long press or a transition.
• The images must be moved off the device, which means going through the photo library of the device owner.
• You need many images at a fixed interval.

Notes

• Keep the screen on. If the device sleeps during a series, the remaining images show the Lock Screen.
• Use USB for short intervals. Wi-Fi adds latency and jitter. Intervals around 200 ms are not reliable over Wi-Fi.
• Plan for storage. A long series at native resolution on a large-screen device uses significant disk space.
• Nothing is saved on the device. Images go directly to your computer, which makes this the right way to capture someone else’s device.

Combine with a performance capture

A screenshot series together with a performance capture makes a clear bug report. It shows both the frame-rate drop and what was on screen at that moment.

Next steps

Simulated location · Device information · Performance monitoring