Modern Xiaomi, Redmi and POCO smartphones are equipped with advanced navigation chips, but sometimes users face inaccurate positioning or complete card failure. The problem can be either a software failure of the MIUI or HyperOS shell, or a physical damage to the antenna after a fall. Before carrying the device into the service, you need to conduct a deep diagnosis to understand the real cause of the malfunction.
In this article, we will look at all the verification methods available, from basic settings to professional developer tools, and you will learn to see the number of satellites visible, the signal level and the accuracy of coordinates, which will help you determine exactly whether hardware repair is needed or software calibration is sufficient.
Users often confuse the lack of internet and the lack of it. GPS-It's important to understand that the navigation module works independently of the data transmission, although the Internet is necessary to display the map on the screen. If the satellites are not caught at all, this may indicate a critical failure in the operation of the receiver.
Basic diagnostics through system settings
The first step should always be to check the obvious. On Android, geolocation settings can be knocked down or limited to power saving mode. Go to Settings → Location and make sure the switch is activated. Select GPS, Wi-Fi and mobile mode for maximum accuracy.
If geolocation is on, but the maps are slow, try rebooting the module, and you can do this through the notification curtain: turn off the geolocation icon, wait 10 seconds, and turn it on again. This simple technique often helps to reset the frozen scanning process.
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Use GPS only mode to check the clean satellite signal without using Wi-Fi networks, this will help to understand whether the module itself is working.
It’s also worth checking the permissions for applications. If the navigator doesn’t have access to the geo-location, it won’t be able to determine your status. Go to Settings → Applications → All apps, find your navigator (like Yandex.Maps or Google Maps) and make sure that the permissions are “always allowed” or “only allowed when used.”
Using an Engineering Menu for In-depth Analysis
The most accurate information about antenna status and signal reception is provided by the engineering menu, a hidden part of the system designed for technicians, but accessible to ordinary users, and the most common way to log in on Xiaomi devices is using a universal code.
Open the Phone app and dial the combination ##3646633#. If the code didn't work, your firmware may be restricting access and you'll need to install a special activator app. From the menu that opens, go to the Location tab, then select Location Based Service.
What if the code doesn't work?
Inside the AGPS section, you can see the connection status and run the testing. This shows technical parameters, like NMEA strings, which contain raw data from satellites, and if there's no data in the logs, then the module is not receiving the signal from orbit.
⚠️ Warning: Be careful in the engineering menu. Changing unknown settings in the Telephony or Connectivity section may lead to unstable network operation or signal loss.
Professional applications for testing GPS
Standard tools are often not enough for detailed visualization, and to see the real-life sky above your phone, it is best to use specialized software, the leading utility in this field is considered to be GPS Test or GPS Status & Toolbox.
Once installed, launch the app and go out into the open space, and the program will show you a list of visible satellites (GPS, GLONASS, Galileo, BeiDou), satellites that the phone sees but the signal from them is weak will be displayed in gray, and those used to calculate the position will be shown in green or blue.
Note the SNR (Signal-to-Noise Ratio) which is the signal-to-noise ratio. The higher the value, the better the reception. Normal is a value above 20-25 dB. If all satellites show SNR below 15 dB even on the street, this is a sign of antenna problems.
- 📡 Accuracy: shows error in meters (ideally) 3-5 meters).
- 🛰️ Satellites: number of visible and used vehicles (normality — 8-12 active).
- ⏱️ TTFF: time of first place determination (cold start should take up to 30-40 seconds).
- 📍 Coordinates: Latitude and Longitude in Real Time.
Comparative table of verification methods
To make it easier for you to navigate diagnostic methods, we have compiled a summary table that will help you quickly choose the right tool depending on your goals and level of training.
| Method | Difficulty | Informativeness | Need for installation |
|---|---|---|---|
| Android settings | Low. | Minimum | No. |
| Engineering menu | Tall. | Maximum | No. |
| Applications (GPS Test) | Medium | Tall. | Yes. |
| Online maps | Low. | Medium | No. |
As you can see from the table, there are enough maps to check quickly, but for a deep diagnosis of hardware problems, it is better to use a bunch of engineering menus and specialized applications, which will give a complete picture of what is happening.
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The combination of the engineering menu and the GPS Test app gives you a 100% understanding of the technical condition of your smartphone’s navigation module.
A-GPS data reset procedure
Sometimes the smartphone remembers old satellite position data that is no longer relevant, and that leads to a long search for the signal, and the solution is to reset the A-GPS cache, and the ephemerides data is re-downloaded from the network.
To do this, you can use the GPS Status & Toolbox app to do this. Inside the menu, find the A-GPS Status Management and select Reset. Then click Download to get the latest data.
☑️ Checklist of discharge A-GPS
This method is especially effective if you have travelled a long distance (for example, come to another city or country) and the navigator "thinks" you are still at home.
Typical causes of failures and their elimination
If software methods didn't work, there are other factors to consider, and often the problem is not with the chip itself, but with the external circumstances, for example, a thick case with a metal back cover can shield the signal, making it impossible to receive indoors.
It’s also worth checking whether flight or power saving modes are on, which aggressively restrict the operation of communication modules, and in some cases, the fault of the MIUI system itself, which is treated by resetting network settings.
⚠️ Warning: If the phone falls or falls into the water, no GPS This could be a consequence of the antenna plume moving away from the motherboard, and the software methods are powerless.
Try resetting your network settings. Go to Settings → Connection and Sharing → Reset Wi-Fi, mobile networks and Bluetooth. This action will not delete your personal files, but will return network settings to factory values, which often eliminates software conflicts.