The problem with geolocation on Xiaomi and Redmi smartphones is a common scenario that users face when installing navigation apps. The device can take a long time to "think" before starting a route, lose satellites in dense development or even show your location in the next block. GPS It is especially annoying when you are driving in an unfamiliar city or using a taxi.
The reasons can be both software limitations of the MIUI or HyperOS shell and physical obstacles. Often, aggressive power-saving settings that force the navigation module to be turned off to save battery power. Understanding how a satellite receiver works can help you quickly diagnose the source of the problem and fix it without visiting a service center.
In this article, we will explore all the available methods, from simple menu switching to the use of specialized diagnostic tools, how to properly configure accesses for cards and why cheap security glasses can impair the quality of reception.
Diagnostics of the current state of the receiver
Before making changes to the system, you need to get objective data about how the smartphone sees satellite space. Standard maps Google or Yandex do not provide detailed technical information, showing only the final point on the map. Deep diagnostics will require the installation of specialized software, such as GPS Test or GPS Status & Toolbox.
Run your chosen app outdoors, away from tall buildings and metal structures. Pay attention to the number of satellites visible and those used for fixation (usually marked in green). If the phone can't catch at least 4-5 satellites even under ideal conditions, the problem can be hardware.
- 📡 Satellite visibility: number of spacecraft available to connect.
- 📍 Accuracy: the error in meters with which the coordinates are determined.
- 🔋 SNR (Signal-to-Noise Ratio: Signal-to-Noise Ratio, which shows the quality of the reception.
- ⏱ Time to First Fix: Time required to determine the location.
It is important to understand the difference between a cold start and a hot start GPS. In a cold start, when the almanac cache is reset or outdated, the search for satellites can take up to 5-10 minutes. A hot start, where current data is already in memory, occurs in a few seconds. If your device constantly performs a cold start, then it can not store the supporting data.
⚠️ Warning: Do not conduct initial indoor diagnostics with metal frames or thick concrete walls. Satellite signal is very weak and may not break through the floors, which will create a false impression of a malfunction of the module.
Basic location settings and operating modes
The first step in optimization is to check the system settings of Android. Xiaomi smartphones by default can be turned on energy saving mode for geolocation, which uses only Wi-Fi network and mobile towers, ignoring satellites.
To do this, go to Settings → Location → Mode. Make sure you choose to use GPS, Wi-Fi and mobile networks at the same time. It is also worth checking whether the “Perfection Improvement” feature is included in additional location settings. This option allows you to use scanning of Bluetooth devices and Wi-Fi points for a faster start.
Special attention should be paid to the permission to access geodata for specific applications. MIUI system strictly controls background activity. If the navigator is not allowed to determine the location in the background, the map can “freeze” when you fold the application or extinguish the screen. Go to Settings → Applications → (your navigator) → Permissions and select the option “allow always”.
Users often forget that they are working properly. GPS-If the time on the phone is knocked down, the satellite sync protocols are not working correctly. Make sure that the date and time settings are ticked with the "Use network time" box».
Resetting and calibrating GPS through engineering codes
If the software settings don't work, reset the data with A-GPS (Assisted GPS), which contains information about the orbits of satellites that helps the phone find them in the sky faster, and over time, the data can become outdated or corrupted, leading to long search signals.
You can use third-party utilities like GPS Status & Toolbox to perform the reset. Inside the app, find the A-GPS status management menu and select Reset. After that, click Download to get fresh satellite almanacs from the Internet. This action often solves the problem when the phone "sees" satellites but cannot fix the coordinates.
☑️ Checklist of discharge A-GPS
There is also a hidden Xiaomi engineering menu available through dialing. Enter the code ##6484### (or #4636## on some models) to enter the testing mode. Here you can find a section related to GPS and check the status of the module or restart it. However, be careful: changing unknown parameters in the engineering menu can lead to unstable system operation.
After the cache is reset, you need to give the device 2-3 minutes in the open to recapture the satellites. Don't expect instant results if the module has been operating incorrectly for a long time. Primary calibration takes time and direct contact of the antenna with the sky.
⚠️ Warning: The engineering menu is for professionals. Don't change the values you're not 100% sure about, especially the options associated with frequencies or regional modem settings.
Effect of protective glasses and covers on the signal
One of the most unexpected reasons for Xiaomi's poor GPS signal is a physical obstacle: the GPS antenna in modern smartphones is located at the top of the case. If you use a thick, protected case with metal inserts or magnetic mounts, it can shield the signal.
Even more critical is the cheap metallic or tinted protective glass, which blocks radio waves, and the antenna simply doesn't see the sky. If you notice a signal deterioration after sticking a new glass or buying a new case, do the test without them.
It’s also worth checking if the hand is covering the antenna area when holding the phone horizontally (landscape orientation), and many drivers hold the phone this way, covering the upper end with their palm, creating a “dead zone” for reception.
| Accessory type | Impact on GPS | Recommendation |
|---|---|---|
| Silicone case | Minimum | Safe. |
| Metal bumper | Critical (shielding) | Remove while navigating |
| Colored glass | High (if the frame is metal) | Replace it with transparent |
| Magnetic anchorage | Medium/High (magnetic field) | Use with caution |
Why are metallic films dangerous?
Optimization of navigation applications
Even with a perfect satellite signal, the navigator can work in snags due to operating system limitations. MIUI and HyperOS are known for their aggressive policy of “killing” background processes. For a navigation application (Yandex.Maps, 2GIS, Google Maps, Waze) to work stably, it must be added to the exceptions.
Open the Safety app (green zipper icon), go to the Battery section» → «Find your navigator and set the "No Limits" mode, which will prevent the system from turning off. GPS-module or freeze the application when the screen is turned off or other software is running.
It is also useful to disable traffic savings for maps if you use online navigation. In some cases, data saving mode blocks the loading of new sections of the map or the update of the road situation, which creates the illusion of signal loss. → SIM-maps and mobile networks → Save traffic and add maps to exceptions.
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Download maps of the region in advance via Wi-Fi will reduce the load on the data channel and speed up the mapping of the route, since the phone does not have to constantly request card tiles over the mobile Internet.
Don't keep multiple navigators open at the same time. This creates a GPS resource access conflict. If you switch between applications, completely close the previous one through the task menu to free up the geolocation port.
Alternative solutions: Bluetooth GPS and external antennas
For owners of older Xiaomi models or situations where professional accuracy is required (geodesy, aeromodelism), the built-in module may not be enough. GPS-These devices have their own powerful antenna and transmit coordinates to the phone over Bluetooth.
Connecting such a gadget usually happens automatically through a standard Android stack, and pairing in location settings will create a new data source, which dramatically solves the problem of “glass skyscrapers” and dense urban development, where built-in antennas of smartphones often lose signal.
There are also applications that allow one phone’s GPS (like a car on the roof or a passenger’s) to be used as a source for another device, which turns the second smartphone into a simple screen, and the best-reception device takes over the coordinates.
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External Bluetooth GPS-module is the only guaranteed solution for situations where the built-in antenna of the smartphone physically can not cope with the reception of the signal due to the design features of the housing or external conditions.