The quality of mobile communications directly depends on signal levelwhich your smartphone receives. A weak signal leads to dropped calls, slow Internet and problems with SMS - this is especially true for residents of remote areas or users of budget tariffs. But how do you know exactly how good the signal is on your Androiddevice? It turns out that the standard “sticks” in the status bar show only an approximate picture.

In this article we will analyze all possible ways to check the signal level on Android from basic to professional. You will learn how to read technical parameters like dBm, ASU i RSSI, which applications provide the most accurate data, and how to use hidden engineering menus even on new versions of the system. We’ll also find out why sometimes the signal “deceives” and how to fix it.

1. Standard methods: what Android indicators show

The most obvious way to assess the signal level is to look at indicator in the status bar (upper right corner of the screen). “Sticks” are displayed here (usually from 1 to 4), and next to them there may be a letter H, H+, 4G or 5G, indicating the network type. But this method has serious limitations:

  • 📶 Subjectivity: the number of sticks depends on the manufacturer (the Samsung and Xiaomi scale may differ).
  • 🔍 No exact data: the indicator does not show the real signal strength in decibels (dBm).
  • 📡 Firmware dependence: some shells (for example, MIUI or One UI) smooth out signal changes for a “beautiful” picture.

To see more detailed information, expand notification panel (swipe down from the top edge of the screen). On some devices, additional information is displayed here, for example:

  • 📱 Samsung Galaxy: when you hold your finger on the signal indicator, it may a pop-up window with network data will appear.
  • 🤖 Stock Android (pure Android): sometimes shows the name of the operator and connection type (LTE, WCDMA).
📊 How often do you check the signal level on your phone?
Only when there are problems
Regularly, for control
I have never checked
I don’t know how to do this

However, even the expanded notification panel does not provide technical details. To do this, you will have to look into the system settings.

2. Checking through Android settings: step-by-step guide

Most modern smartphones allow this. view extended network information through standard settings. Here is a universal algorithm for devices on Android 10 and newer:

  1. Open the application Settings (gear icon).
  2. Go to section Network and Internet (or Connections on Samsung).
  3. Select Mobile network → Point name access (APN) or Network type.
  4. On some devices there is an item here Network information or SIM card status.

In this menu you can see:

  • 📡 Network type: GSM, LTE, 5G NR etc.
  • 📶 Signal level: sometimes indicated in dBm (for example, -95 dBm).
  • 🔄 Roaming status: enabled or disabled.

Item "Network type" (must correspond to the tariff)

Signal level in dBm (optimally: from -70 to -90)

Operator name (sometimes displayed incorrectly in roaming)

SIM card status (active/inactive)

-->

If your settings do not have an item with detailed information about the signal, do not be upset - this is normal for many firmwares. In this case, engineering menu or third-party applications will help.

⚠️ Attention: On some devices (for example, Xiaomi s MIUI 14), the network information section may be hidden. If you do not find it, try using the settings search (magnifying glass icon at the top of the screen) and enter the query "network status" or "signal".

3. Engineering menu: hidden signal data

For advanced users, the most accurate way to check the signal is engineering menu (Engineer Mode or Service Mode). It is available on all Android devices, but access to it differs depending on the manufacturer. Important: not all parameters in this menu are safe to change!

To open the engineering menu, use secret codes:

Manufacturer Login code Signal section
Samsung *#0011# Serving Cell Info
Xiaomi/Redmi/POCO ##4636## Information about phone → Network status
Huawei/Honor ##2846579## → ProjectMenu Network Info
Google Pixel ##4636## Phone Information
Realme/Oppo ##4636## or *#808# Network Info

After entering the code, you will be taken to a menu with technical data. Look for the parameters:

  • 📌 RSSI (Received Signal Strength Indicator) - relative signal level (the higher the better).
  • 📌 dBm - absolute signal strength in decibels (optimally: from -70 to -90 dBm).
  • 📌 ASU (Arbitrary Strength Unit) - another scale measurements (maximum 31 or 97 depending on the network).
  • 📌 CQI (Channel Quality Indicator) - channel quality (relevant for 4G/5G).
How to decipher dBm values?

Values dBm indicate signal strength in decibels relative to milliwatt. The closer the number is to zero, the stronger the signal:

  • -50 dBm - excellent signal (rarely found in real conditions).
  • -70 dBm - very good signal (ideal for calls and the Internet).
  • -90 dBm - average signal (small interference is possible).
  • -110 dBm - weak signal (connection breaks, slow Internet).
  • -120 dBm - almost no signal (communication is only possible near the tower).

For example, on Samsung Galaxy after entering *#0011# you will see a table with data about the current cell (Serving Cell). Pay attention to the lines:

  • RX Power — received signal power (analog dBm).
  • RSCP — pilot signal power (for 3G networks).
  • EC/IO — signal-to-noise ratio (the higher the better).
⚠️ Attention: Do not change no parameters in the engineering menu if you do not know their purpose! This can lead to loss of the network or even damage to the communication module. The menu is intended only for viewing data.

4. Applications for signal monitoring: top 5 solutions

If standard methods do not provide enough information, they will come to the rescue third-party applications. They not only show the current signal level, but also build graphs, save measurement history, and even help you find the best location for reception. Here are the best options for 2026:

  1. NetMonster (free, without unnecessary water)

    Shows dBm, ASU, CQI, as well as information about the cell (Cell ID, LAC, MCC/MNC). There is a coverage map and the ability to export data.

  2. Network Signal Info (free and Pro version)

    Displays the signal in real time with graphs. Supports 2G/3G/4G/5G and Wi-Fi. In the Pro version, notifications about a weak signal are available.

  3. LTE Discovery (for advanced users)

    Specializes in LTE/5Gnetworks. Shows frequency ranges (Band), channel width (Bandwidth) and modulation type.

  4. OpenSignal (with coverage maps)

    In addition to the signal level, it shows the Internet speed and compares your operator with competitors. There are crowdsourcing coverage maps.

  5. G-NetTrack Pro (for engineers)

    Professional tool with support 5G NSA/SA, analysis of neighboring cells and speed tests.

💡

If you need to check the signal at different points in your home or office, use the application NetMonster with logging function. Start recording, walk around the room, and then analyze where the signal is weakest. This will help to optimally place the repeater (signal amplifier).

When choosing an application, pay attention to:

  • 🔧 Support for your version of Android (some applications do not work on Android 14+ without root).
  • 📊 Availability of graphs (convenient for analysis of signal changes over time).
  • 🌍 Coverage maps (useful for travel).

5. Hidden tricks: ADB and technical commands

For those who are ready to dive into technical details, there is a way to get signal data through ADB (Android Debug Bridge). This requires connecting the phone to the computer, but gives the most accurate information.

Here's how to do it:

  1. Turn on mode 7 times Developer on your phone: go to Settings → About phone and click on Build number.
  2. Go back to Settings → System → For developers and enable USB debugging.
  3. Connect your phone to the PC, install ADB drivers and open the command line.
  4. Enter the command:
adb shell

su


dumpsys telephony.registry

In the output, look for the lines:

  • mSignalStrength=SignalStrength: — here there will be values for GSM, LTE and other networks.
  • mGsmSignalStrength=-92 —an example of the value in dBm.
  • mLteSignalStrength= —data for 4G (including rsrp, rsrq, rssnr).

For 5G use the command:

adb shell

su


dumpsys telephony.registry | grep "Nr"

💡

ADB method is suitable for diagnosing communication problems when standard methods do not provide enough data. For example, if the phone shows 4 signal bars, but calls are constantly dropped, through ADB you can find out the real power in dBm and compare with normal.

⚠️ Attention: Using ADB requires caution. Do not change system parameters through these commands if you are not sure of their purpose. Also note that on some firmware (for example, MIUI), access to some data through ADB may be limited.

6. Why the signal “deceives”: common problems

Sometimes the signal indicator shows full scale, but the connection does not work well. Or vice versa: one stick, and the Internet flies. What's the matter?

Here are the main reasons for the discrepancies:

  • 📡 Type networks: The phone may cling to 3G with a strong signal, although there is nearby 4G with a weaker but faster connection.
  • 🏙️ Cell overload: In the city center the signal can be strong, but due to the large number of users the speed drops.
  • 🔄 Roaming: When roaming, the phone sometimes shows the signal of the “native” operator, although it is actually connected to a partner network.
  • 📱 Firmware: Some shells (for example, ColorOS or Funtouch OS) artificially “inflate” the signal indicator.
  • 🛡️ Shielding: Metal phone case or case may weaken the real signal, but the indicator does not take this into account.

How to check if your phone is deceiving you?

  1. Compare the indicator readings with data from engineering menu or applications like NetMonster.
  2. Check Internet speed via Speedtest. If the speed is low with a “full” signal, the problem is network congestion.
  3. Try force switch to another type networks (for example, from 4G to 3G) in the settings.
How to force select the network type?

On most Android devices this is done like this:

  1. Open Settings → Network and Internet → Mobile network.
  2. Select Network type (or Preferred network type).
  3. Install LTE only (or 3G only, if necessary).

On Samsung path may differ: Settings → Connections → Mobile networks → Network mode.

7. Strengthening the signal: practical tips

If the test shows that the signal is weak (-100 dBm or worse), try these ways to improve the situation:

  • 📍 Changing location: Even moving 1-2 meters can greatly affect reception. Go to the window or go out onto the balcony.
  • 🔄 Rebooting the phone: Sometimes the communication module freezes, and a reboot helps to reconnect to a more powerful cell.
  • 📱 Software update: Manufacturers regularly release fixes for the communication module. Check for updates in Settings → System → System update.
  • 🛠️ Signal booster (repeater): If the problem is persistent, consider purchasing a repeater (for example, Huawei 4G Signal Booster or TP-Link 4G Antenna).
  • 📡 External antenna: For stationary use (for example, in a country house), you can connect a directional antenna via a special adapter.
  • 🔧 Reset settings. network: Sometimes resetting the communication module to factory settings helps. To do this, go to Settings → System → Reset → Reset network settings.

If you often travel to places with poor signal, pay attention to phones with an improved communication moduleFor example:

  • Samsung Galaxy XCover Pro 2 — has a reinforced antenna for extreme conditions.
  • CAT S75 —phone with satellite communication support Iridium for places without coverage.
  • Doogee S98 Pro —equipped with external antenna connectors.
⚠️ Attention: Before purchasing a signal booster (repeater), make sure it is certified for use in your country. In some regions (for example, in Russia), installation of powerful repeaters requires permission from the telecom operator.

FAQ: Frequently asked questions about the signal level on Android

🔍 Why do different phones show different signal levels in the same place?

This depends on several factors:

  • Antenna sensitivity: Different models have different receiver quality. For example, flagship Samsung or iPhone usually pick up the signal better than budget phones.
  • Firmware: Manufacturers process signal data differently. For example, Xiaomi may show more "optimistic" values.
  • Support frequencies: If the phone does not support the frequency range (Band) that the local tower uses, the signal will be weaker.
📶 Which is better: 3 4G sticks or 4 3G sticks?

Usually 3 4G sticks preferable because:

  • Internet speed is 4G (LTE) even with a weak signal higher than 3G.
  • Delays (ping) are 4G lower, which is important for calls on VoLTE.
  • Modern networks 4G/5G are better optimized for working in conditions of weak signal.

However, if you only need a voice call (without the Internet), and 3G the signal is more stable, then in some cases 4 sticks 3G can provide a clearer connection.

🔋 Does the signal level affect battery consumption?

Yes, and very much! When the signal is weak, the phone:

  • Constantly searches for a network, which increases the load on the processor.
  • Increases transmission power in order to “shout” to the tower.
  • Switches between cells more often, which also wastes energy.

According to observations, with a weaker signal -100 dBm battery consumption can increase by 20-30%. If you notice that the phone quickly discharges in places with a poor signal, try turning it on airplane mode for a time when the connection is not needed.

🌐 Is it possible to check the signal without a SIM card?

No, the phone cannot connect without a SIM card to the mobile network, so signal data will not be available. However, there are two workarounds:

  • Use Wi-Fi Calling (if the operator supports this function). In this case, calls will go through Wi-Fi, but the mobile network indicator will still not work.
  • Connect to the network via hotspot another phone (but this will not give data about the signal of your device).

If you need to test the phone's antenna without SIM, you can use test modes (for example, ##4636##), but they will only show the technical capabilities of the module, not the real signal.

📡 How to find out which tower my phone serves?

To do this you will need data from engineering menu or specialized applications:

  1. Open NetMonster or Network Signal Info.
  2. Find parameters Cell ID (identifier cell), LAC (area code), MCC and MNC (country and operator codes).
  3. Enter this data on sites like CellIDFinder or OpenCelliDto see location of the tower on the map.

Please note that the accuracy of tower identification depends on the service database. In some regions, information may be incomplete.