Good WiFi should work where you actually use it — not only next to the router. If one room has fast internet while another has slow loading, unstable video calls or frequent dropouts, test the network throughout your home.
The most reliable approach is to measure several locations instead of relying only on the WiFi bars on your phone.
How do you check WiFi coverage?
Walk through every room with your phone or laptop and test the places where you normally use the internet:
- next to the router,
- the furthest room,
- behind several walls,
- another floor,
- the room where WiFi often drops,
- near your TV, console or work desk.
Check both signal strength and actual performance: download speed, upload speed and latency.
Are WiFi bars enough?
No. The WiFi icon is only a rough indication. A device showing two bars can still work well, while a full signal does not guarantee high speed.
Performance is also affected by interference, network load, the 2.4 GHz or 5 GHz band, the device itself and the quality of your internet connection.
The useful question is therefore: how strong is the signal, and how well does the connection actually work here?
How to create a simple WiFi coverage map
Divide your home into rooms and test each one. In a multi-storey house, test every floor separately.
Record the results in a simple table and mark problem areas. This quickly shows whether the issue is limited to one room, one side of the house or an entire floor.
What does weak WiFi mean?
If only one room has poor coverage, start by checking router placement. Walls, floors, large furniture and metal objects can reduce signal quality.
If an entire floor has weak coverage, moving the router may not be enough. You may need an additional access point, mesh system or another solution based on your home's layout.
Where should you test?
Test where you actually use the internet: at your desk, sofa, TV, bed or kitchen — not only in the doorway.
Closed doors can also change the result, so test under normal conditions.
Key rules
- Test every room.
- Check real speed, not just signal bars.
- Test every floor in a multi-storey home.
- Measure where you actually use the network.
- Mark weak areas on a floor plan.
- Choose a router, mesh point or other solution only after measuring.
PerfectWiFi is designed around this practical approach: understand the real layout and weak spots first, then decide how the WiFi network should be improved. See also Jak poprawić zasięg WiFi w domu? and Jak zaplanować WiFi w domu piętrowym?.