How to Check Your Wi-Fi Router's Signal Strength in Your Apartment: A Step-by-Step Guide

A weak Wi-Fi signal in an apartment is one of the most common problems users face. The hotspot may be stable, but in some rooms the speed drops, video lags, and pages take forever to load. The cause is often insufficient signal level, which is weakened by walls, furniture, or interference from neighboring networks. Before buying a repeater or replacing a router, it's worth accurately measuring the signal strength in different areas of the apartment—this will help you make an informed decision.

In this article you will find 7 proven methods Measuring Wi-Fi signal strength on any device, from smartphones to laptops. We'll explore what's considered normal, how to interpret the results, and what to do if the signal is weak. You'll also learn why Even a router with Wi-Fi 6 support can show poor coverage in an apartment building due to congested airwaves..

Why is it important to check your Wi-Fi signal strength, not just speed?

Many users are confused Internet speed And Wi-Fi signal strengthSpeed ​​shows how quickly data is transferred from the router to the device, and signal strength shows how much stable this connection. For example, you may have a speed of 100 Mbps, but if the signal is weak (-80 dBm), then the connection will constantly break, and the ping in games will jump.

Here's why checking your signal strength is more important than testing your speed:

• 📶 Connection stability. Signal -50 dBm provides a reliable connection, and -90 dBm - constant breaks, even at high speed.
• 🔄 Switching between frequenciesThe router can automatically switch the device from 5 GHz on 2.4 GHz, if the signal is weak, which reduces the speed.
• 🏠 Coverage planningKnowing the signal strength in each room will help you properly place your repeater or mesh system.

Moreover, a weak signal is often disguised as other problems: "the router is slow," "the ISP is throttling the speed," or "there's a virus on the computer." Before calling support or resetting the settings, check the signal level — it will take 5 minutes, but will save hours on diagnostics.

Normal and critical Wi-Fi signal strength values

Wi-Fi signal strength is measured in decibels-milliwatts (dBm). How closer to zero, the stronger the signal. For example, -30 dBm - excellent signal, and -90 dBm — virtually no connection. Below is a table explaining the meanings:

Please note: in practice, even with -65 dBm Problems may arise if there is a lot of interference from neighboring networks. For example, in an apartment building on the frequency 2.4 GHz The channels are often overloaded, and the router is forced to reduce the speed, despite the seemingly normal signal level.

Method 1: Checking the signal strength on Windows (without programs)

If you have a laptop or PC with Wi-Fi adapter, you can find out the signal strength using standard Windows tools. This method works on Windows 10/11 and does not require installation of additional software.

Instructions:

1. Click the Wi-Fi icon in the lower right corner of the taskbar.
2. Find your network in the list and hover over it. A tooltip will appear showing the signal strength as a percentage.
3. For the exact value in dBm open Settings → Network and Internet → Wi-Fi.
4. Click on your network name, then scroll down to the block "Properties"There will be a line there. Signal Level with a precise meaning.

If your network properties only show percentages, use command line:

netsh wlan show interfaces

Find the line in the results "Signal" - there will be a level in percentage and dBm.

Hover over the Wi-Fi icon | Open "Network settings" | Use the command netsh wlan show interfaces|Compare with the table of normal values-->

⚠️ Attention: In some versions of Windows (especially after updates) the line with dBm may be missing. In this case, use third-party utilities (see Method 3).

Method 2: Measuring the signal on an Android smartphone

On Android there is no built-in tool to display the signal level in dBm, but there are workarounds. The easiest one is to use hidden engineering menu (does not work on all models).

Instructions for the engineering menu:

1. Open the app "Telephone" and enter the combination: ##4636##.
2. In the menu that appears, select "Wi-Fi Information".
3. In the block "Wi-Fi signal strength" there will be a value in dBm.

If the engineering menu is not available, install one of these applications:

• 📱 WiFi Analyzer (displays signal in real time + channel analysis).
• 📊 NetSpot (allows you to create a heat map of the signal in the apartment).
• 🔍 WiFi Signal Meter (minimalistic interface with precise data).

When using applications, please pay attention to:

• 📡 Current channelIf there are many networks nearby on the same channel, this creates interference.
• 🔄 Frequency (2.4 GHz or 5 GHz). On 5 GHz the signal is weaker, but the speed is higher.
• 📈 Signal graphSharp jumps indicate interference.

Why don't some smartphones have an engineering menu?

Manufacturers (eg Samsung, Xiaomi) often block access to the engineering menu in the latest firmware versions. In this case, the only options are to use third-party apps or ADB commands (for advanced users).

Method 3: Check on iPhone or iPad

On devices Apple (iPhone, iPad) There is no built-in way to see the signal strength in dBm, but there are two working methods: through airplane mode and third-party applications.

Method 1: Using Airplane Mode (Without Jailbreaking)

1. Activate Airplane mode V Control center.
2. Turn on Wi-Fi manually (in Settings).
3. Open the app "Compass" (included in the standard set).
4. Tap the screen - a small window with the signal level will appear in the upper left corner dBm.

Method 2: Apps from the App Store

• 📲 AirPort Utility (official app from Apple, but requires enabling advanced mode).
• 📊 WiFi SweetSpots (builds a heat map of the signal).
• 🔍 Network Analyzer (shows signal + analyzes network).

On iOS it is also useful to check connection quality through Settings → Wi-Fi → (tap your network). The following are displayed there:

• 🔗 IP address (must be within your router's range, for example, 192.168.1.x).
• 📡 Router (MAC address of the router).
• 📶 Signal level (in iOS 16+ it is displayed as graphic stripes, but not in dBm).

⚠️ AttentionOn iPhones with iOS 15 and later, Apple has restricted access to accurate signal strength data for third-party apps. If an app stops showing dBm, update it or use it AirPort Utility.

Method 4: Measuring the signal on macOS

On computers MacBook or iMac You can check the signal level through wireless network monitorThis method works on all versions of macOS, including Sonoma And Ventura.

Instructions:

1. Hold down the key Option (⌥) and click on the Wi-Fi icon in the menu bar.
2. The drop-down list will display additional information, including the line "RSSI" - this is the signal level in dBm.

For a more detailed analysis, use built-in utility Wireless Diagnostics:

1. Open Spotlight (Cmd + Space) and enter "Wireless Diagnostics".
2. Run the utility and select "Monitor Performance" (Performance Monitoring).
3. In real time, you will see a graph of the signal level, speed and connection quality.

Advantage Wireless Diagnostics:

• 📈 Shows history of changes signal (useful for detecting interference).
• 🔍 Analyzes neighboring networks and channel congestion.
• 📡 Offers optimal settings for the router.

Method 5: Using professional utilities (for advanced users)

If you need to not only measure the signal level, but also analyze the network for interference, the best solution is professional utilitiesThey are suitable for Windows, macOS and Linux.

Top 3 programs for deep diagnostics:

• 🖥️ inSSIDer (Paid, but there's a free version with limitations). Shows all networks in range, their channels, bandwidth, and signal strength. Suitable for selecting the least congested channel.
• 📊 Acrylic Wi-Fi (Free for home use). Generates signal graphs, analyzes interference, and suggests optimal router settings.
• 🔧 Wireshark (for experts). Allows you to capture packets and analyze connection quality at a low level.

Example of use inSSIDer:

1. Download and install the program from official website.
2. Run a scan. The table will display all available networks with the following parameters:
• SSID — network name.
• BSSID — MAC address of the router.
• Channel — the channel used.
• RSSI — signal level in dBm.

Pay attention to the column "Max Rate" - it shows the maximum speed that the network can provide at the current signal level.

If you see that your router is operating on the same channel as 5-10 neighboring networks, this explains the low speed even with a good signal strength. The solution is change the channel in the router settings (read about this in the next section).

⚠️ Attention: In apartment buildings, channels 2.4 GHz (especially 1, 6, and 11) are often overloaded. If your router automatically selects a channel, try manually selecting a less crowded one (for example, 3 or 9).

Method 6: Creating a Wi-Fi heat map in an apartment

If you need to not just measure the signal at one point, but visualize the coverage throughout the apartment, use programs to build heat mapThis will help you find "dead zones" and optimally place your router or repeater.

Best Heatmap Tools:

• 🗺️ NetSpot (Windows/macOS). Allows you to upload an apartment plan and plot signal levels on it.
• 📱 WiFi Heatmap (Android). Builds a map right on your smartphone.
• 🖥️ Ekahau HeatMapper (Free, but requires registration). Suitable for professional analysis.

Instructions for NetSpot:

1. Download and install the program. Select the mode "Discover".
2. Upload a floor plan of your apartment (you can draw it by hand and take a photo) or create a diagram in a program.
3. Walk around your apartment with your laptop, marking measurement points. The program automatically records the signal level.
4. Upon completion, you will receive a color map showing:
• 🟢 Green - strong signal.
• 🟡 Yellow - average.
• 🔴 Red - weak or absent.

Example of heat map interpretation:

• If in the bedroom red zone, and the router is in the hallway, consider moving the router or installing Mesh systems.
• If the signal is weak only in one corner, it is enough repeater or Powerline adapter.
• If yellow zones prevail throughout the apartment, check your router settings (channel, transmission power, Wi-Fi standard).

What to do if your Wi-Fi signal is weak: 5 practical solutions

If after measurements it turns out that the signal level in some areas of the apartment -70 dBm and below, here 5 ways to improve coverage:

1. Optimize your router's location

• 📍 Place the router in the center of the apartment, and not in the corner.
• 🚫 Get him away from microwaves, cordless phones And metal objects.
• 📶 Raise the router to a height of 1-1.5 meters (for example, on a shelf).

2. Change the channel and frequency

• 🔄 In the router settings (192.168.1.1 or 192.168.0.1) select the channel with the least interference (use WiFi Analyzer for analysis).
• 📡 If possible, switch from 2.4 GHz on 5 GHz (less interference, but shorter range).

3. Update your router firmware

• 🔧 Go to the router's web interface and check for updates in the section "System" or "Administration".
• 📥 Download the latest firmware from the manufacturer's website (for example, TP-Link, ASUS, Keenetic).

4. Use additional equipment

• 📶 Repeater (amplifier) — repeats the router signal, but may reduce speed.
• 🔗 Mesh system — several access points working as one network (ideal for large apartments).
• ⚡ Powerline adapter — transmits the Internet through electrical wiring (useful if the router cannot be moved).

5. Check the transmit power settings

• ⚡ In some routers (for example, ASUS RT-AX88U) you can increase the transmission power in the settings Wireless Network → Professional.
• ⚠️ Do not set the maximum power level - this may cause the router to overheat and interfere with neighboring networks.

⚠️ AttentionIf you live in an apartment building, increasing your router's transmit power could make things worse for everyone. The best solution is to coordinate a switch to 5 GHz or use Mesh systems with automatic channel selection.

FAQ: Frequently asked questions about checking your Wi-Fi signal

Is it possible to check the signal strength on a Smart TV?

On the majority Smart TV (Samsung, LG, Sony) there are no built-in tools to display the signal level in dBmHowever, you can:

1. Run a speed test in an app (e.g. Speedtest) - if the speed is significantly lower than on other devices, the signal is weak.
2. Connect an external Wi-Fi adapter with monitoring support to the TV (for example, TP-Link TL-WN725N) and use a laptop for measurements.

If your TV keeps losing connection, consider connecting via cable (Ethernet) or Powerline adapter.

Why does the signal level show differently on different devices?

This is normal! The signal level depends on:

• 📱 Wi-Fi adapter sensitivity (in smartphones it is usually lower than in laptops).
• 📡 Wi-Fi standard (devices with Wi-Fi 6 may show a more stable signal).
• 🔋 Battery status (On some smartphones, when the battery is low, the power of the Wi-Fi module is reduced).

For an objective assessment, measure the signal on multiple devices and take the average value.

How to check the Wi-Fi signal on devices without a screen (e.g., a smart speaker)?

For devices like Amazon Echo, Google Nest or Yandex Stations There is no direct signal verification. But you can:

1. Rate quality of work: If the speaker does not respond well to commands or the music is interrupted, the signal is weak.
2. Use mobile application devices (for example, Google Home), where the connection status is sometimes displayed.
3. Connect a laptop or smartphone to the same network and measure the signal in the same place.

If the problem persists, move the router closer to the device or use Mesh system.

Can a weak Wi-Fi signal affect your health?

No, the Wi-Fi signal is weak. not hazardous to healthThe router's radiation power is hundreds of times lower than that of a mobile phone and comparable to the background radiation of household appliances. However:

• 📵 If you experience headaches or insomnia, it is most likely due to electromagnetic background from all devices in the house, not specifically from Wi-Fi.
• 🛌 To reduce the impact, you can turn off Wi-Fi at night or use a router with a function Eco mode (reduces power at night).

The WHO and other authoritative organizations confirm that Wi-Fi radiation does not cause harm to health under standard use.

How often should I check my Wi-Fi signal strength?

Recommended frequency of checking:

• 🏠 After rearranging the furniture or changes in the layout of the apartment.
• 📡 After updating the router firmware or changing its settings.
• 📱 If new devices have appeared, connected to the network (especially smart gadgets).
• 📈 Once every 3-6 months for prevention (especially if you live in an apartment building where neighbors can change their routers).

If you have Mesh system, check the signal once a month - such systems automatically optimize coverage, but sometimes require manual adjustments.