How to Test Signal Strength on Android Devices: A Comprehensive Guide

Curious about the actual signal strength on your Android device? Whether you're troubleshooting connectivity issues or simply want to understand your network better, knowing how to accurately measure signal strength can be incredibly useful. In this guide, we'll explore several methods to test the signal strength on your Android device, ranging from built-in features to third-party apps and professional equipment.

 

1. Using "Engineering Mode"

Similar to the iPhone's "Field Test Mode," Android devices have a hidden Engineering Mode that can display detailed signal information. The method to access this mode may vary depending on the brand and model of your phone. Here are some common methods:

Method 1:
1. Open the dialer app.
2. Enter the following code and press the call button: *#*#4636#*#*.
3. This will open the "Testing" menu. Select "Phone information" or "Device information."
4. Here, you can see signal strength information displayed in dBm.

Method 2:(For specific brands like Samsung)
1. Open the dialer app.
2. Enter the following code and press the call button: *#0011#.
3. This will directly display signal strength information.

 

2. Using Third-Party Applications

Several third-party applications can help you test and monitor the signal strength of your Android device.

Recommended Apps:
- OpenSignal: Provides coverage maps, signal strength readings, speed tests, and more.
- Network Cell Info Lite: Offers detailed signal information and coverage maps.
- CellMapper: Helps you find nearby cell towers and view signal coverage.

 3. Observing Signal Bars

While not the most precise method, you can get a general sense of your signal strength by observing the number of signal bars at the top of your Android device screen. More bars typically indicate a stronger signal, but this method lacks the granularity of other approaches.

 

4. Testing in Different Locations and Times

Signal strength can vary significantly depending on your location and the time of day due to factors like obstacles, network congestion, and distance from cell towers. To get a comprehensive understanding of your signal strength, test it in various locations and at different times.

 

5. Using Professional Equipment

For the most accurate and professional-level testing, consider using signal analyzers or network testing equipment. These tools are typically used by network engineers and professional technicians and can provide highly detailed readings.

 

Example Calculation

Suppose you see a signal strength of -85 dBm in Engineering Mode. This value indicates a medium signal strength. Generally, -50 dBm to -70 dBm indicates a strong signal, -70 dBm to -90 dBm indicates a medium signal, and below -90 dBm indicates a weaker signal.

By utilizing these methods, you can accurately test and monitor the signal strength of your Android device, gaining a better understanding of your network coverage and signal quality. Whether you're facing connectivity issues or simply want to know more about your device, these techniques will provide valuable insights.