Sensor Test - Test device sensors

You can test sensors in your smartphone.

Advanced Testing

Dynamic Response Testing: Assess the sensor's response time and accuracy at different speeds and acceleration levels. Analyze how quickly the sensor responds to sudden changes in position.

Accuracy and Resolution Testing: Measure the sensor's accuracy by comparing its output to a known reference position. Evaluate the sensor's ability to detect small changes in position and test resolution.

Cross-Talk and Interference Testing: Assess if there is any interference between multiple sensors or other electronic components. Expose the sensor to external sources of interference to evaluate its resilience.

Long-Term Stability Testing: Run the sensor continuously for an extended period to evaluate its long-term stability and performance under continuous use.

Supported sensors:

- Accelerometer

- Light sensor

- Proximity sensor

- Magnetometer

- Gyroscope

- Barometer (pressure sensor)

- Compass

If a sensor is registered in the system, it will have a green indicator; otherwise, it will be red. If a sensor doesn't report any data, it will display "no data" on the sensor test screen. In most cases, this means that the device doesn't have that type of sensor, or it is not functioning properly. If all sensors fail to report any data, it usually indicates a communication issue with the sensor service, which commonly occurs after a firmware update. In such cases, sensors may not work in all apps.

The total number of available sensors is displayed. By pressing on it, you can view a list of the sensors and test each of them with a graph view. This feature is also useful for developers working on custom kernels.

Details:

Accelerometer

- Measures acceleration along three axes: x, y, z; units of measurement: m/s^2

When oriented vertically, the standard value is equal to gravitational acceleration (approximately 9.8 m/s^2).

In a horizontal position, the values along the axes are: z ≈ 9.8 m/s^2, x = 0, y = 0

Functionality:

Used for automatic screen orientation changes when device rotation occurs, in games, etc.

Test Description:

Play a football game. Tilt the device to move the ball in the direction of inclination, try to score a goal.

Light sensor

- Measures illumination; units of measurement: lux

Functionality:

Used for automatic brightness adjustment (auto-brightness)

Test Description:

Place a lamp near the sensor. Changing illumination should cause the glow around the lamp to shift from white to bright yellow.

Move the device into the light or a dark room.

Typical values: room - 150 lux, office - 300 lux, sunny day - 10,000 lux and above

Proximity sensor

- Measures the distance between the device and an object; units of measurement: cm

Many devices only support two values: "far" and "close"

Functionality:

Used to turn off the screen during phone calls

Test Description:

Perform a test with a lamp. Cover the sensor with your hand to turn off the light, then uncover it to turn it back on.

Magnetometer

- Measures magnetic field readings in three axes; resulting value is calculated based on them; units of measurement: mT

Functionality:

Utilized in applications like compasses

Test Description:

View a scale indicating the current value. Moving the device close to a metal object should result in an increased value.

Gyroscope

- Measures rotational speed around three axes: x, y, z; units of measurement: rad/s

Functionality:

Used in various multimedia applications, e.g., creating panoramas in camera apps

Test Description:

Displays a graph of rotational speeds along the three axes. When stationary, the values should tend towards 0.

Barometer (Pressure Sensor)

- Measures atmospheric pressure; measurement units: mbar or mm Hg (changeable in settings)

Test Description:

Showcases a level with the current pressure value.

Normal atmospheric pressure: 100 kPa = 1000 mbar ≈ 750 mm Hg