How to check a phone's tilt response on a flat surface

Your phone may not respond to a tilt gesture, or you may want to check its motion sensors before using a compass, game, or navigation app. A browser test can show whether the phone detects movement and rotation while it rests on a flat surface.

Use the Sensors Test to check motion and gyroscope readings. The test can help you spot an absent or erratic response, but it cannot prove that a table is perfectly level or certify the sensor's accuracy.

Test the phone's tilt response

1. Open the Sensors Test on the phone you want to check. If the browser asks for access to motion or orientation data, allow it.
2. Put the phone face up on a firm, level surface. Keep it still for a few seconds and note whether the motion and gyroscope readings settle.
3. Without sliding the phone, gently lift one edge a small amount, then lower it back to the surface. Repeat with a different edge. Do not twist or flex the phone.
4. Watch for a change while the phone tilts and for the readings to settle again after it is flat and still. Repeat the same movement once to see whether the response is similar.

A phone resting on a surface should not show constant large movement when nobody is touching it. A gentle, repeatable change during a tilt is more useful than a particular number, since sensor scales and display formats vary by device.

What the result means

Readings change during the tilt, then settle

This is the expected pattern. As you tilt the phone, its motion sensors detect the change in orientation. When you stop moving it, the gyroscope reading should generally settle because the phone is no longer rotating. Motion readings may still show the steady effect of gravity, depending on which values the browser exposes.

Readings keep moving while the phone is untouched

First check for a wobbly table, vibration from a nearby appliance, or a phone case that rocks on the surface. Small variations can also come from sensor noise, meaning minor fluctuations that do not indicate a fault. Repeat the test on a stable surface and do not touch the phone while observing it.

There is no visible change when you tilt the phone

The browser may not have permission to read motion data, the browser may not expose that sensor, or the test may be showing a different sensor than the one you expect. Reload the page, allow any sensor request, and try a slow, slightly larger tilt. If the test still shows no response, check another browser on the same phone before concluding the hardware is broken.

Only one direction responds, or the result varies each time

Make sure you are lifting an edge rather than sliding the phone across the table. Repeat the movement slowly in two directions. If one direction consistently fails in more than one browser, while other motion is detected, the phone may have a sensor or software problem.

The screen does not rotate

Screen rotation is not the same as sensor input. Rotation lock, an app's own settings, or a screen that does not support a particular orientation can prevent the display from turning even when the sensor detects a tilt.

How to fix a missing or inconsistent response

1. Allow motion access. On an iPhone using Safari, check Settings › Apps › Safari › Motion & Orientation Access. On some iOS versions, Safari appears directly under Settings › Safari. Reload the test after changing access.
2. Check the browser's site settings. In Chrome on Android, open Chrome › ⋮ › Settings › Site settings and look for a motion sensor permission if it is available. Browser versions and device makers differ, and some do not show a separate control.
3. Keep the phone stable. Use a rigid table and remove anything that makes the phone rock. Avoid testing on a bed, cushion, or surface that moves when you touch it.
4. Repeat with a slow tilt. Lift one edge gently and return the phone to the same starting position. A fast shake can make it harder to tell a real tilt response from vibration or handling.
5. Close and reopen the browser. Another page or app may be using sensor data, or the browser tab may not have recovered after a permission change. Reopen the test and grant access if prompted.
6. Try another browser on the phone. If sensor readings work there, the issue is likely browser support or a permission setting rather than a failed sensor. If the same direction remains unresponsive across browsers, restart the phone and test again.

When it may be a hardware problem

Suspect a fault if the phone repeatedly shows no motion response, or a consistent missing direction, after you have allowed sensor access, restarted the phone, and tried another browser. A browser test cannot diagnose the sensor's circuit or calibrate it precisely. If the problem affects navigation or other built-in features too, contact the phone maker or a repair shop. Check warranty coverage before paying for a repair.

Why a flat surface is only a starting point

The test checks whether sensor readings react to movement. It does not measure the exact angle of your table, and it cannot tell you whether the phone is perfectly level. A phone's frame, case, and the way it rests on the surface can all affect the result. For a useful comparison, use the same surface and repeat the same small tilt rather than comparing the displayed values with another phone.

Motion sensors can also be restricted by the phone's browser, so a missing reading is not proof of broken hardware. The test runs on the phone, and its sensor readings stay on the device.