Many Xiaomi smartphone owners face a paradox: the unlock feature, which should make life easier, disappears from the menu or works incorrectly. Users look for Smart Lock settings in familiar security sections, but the MIUI or HyperOS shell interface often hides these options deeper than in pure Android.
Google’s Smart Lock feature allows you to automatically keep your device unlocked in certain situations, such as when your phone is in your pocket, next to a trusted Bluetooth device, or in a safe place, but on Xiaomi, Redmi, and Poco gadgets, the path to these settings may vary depending on the firmware version and region.
In this guide, we will break down the exact activation paths, trusted device nuances and locations, and solve typical problems when an option becomes unavailable, learn why a feature can be hidden due to lack of geolocation data, and how to fix it without losing data.
Location of Smart Lock settings in MIUI and HyperOS
Finding the right switch is the first and often the most confusing step. Unlike stock Android, where the path is standard, it can vary in Xiaomi shells. Most often, the login is through global system settings. You need to open the Settings app and go to Password and Security.
Then the algorithm of actions depends on the version of the operating system. In older versions of MIUI, you had to select Unlock by fingerprint, and then search the Smart Lock tab at the bottom. However, in current builds of HyperOS and MIUI 14, the logic has changed. Now the feature you want is often hidden inside the Advanced Settings menu or directly in the Security section under Trusted Agents.
If you can't find the option on the standard path, try the built-in search. Click on the magnifying glass at the top of the settings menu and type in "Smart Lock" or "Smart Lock." The system will prompt you to go to the desired screen. This is the fastest way, since it ignores the changes in the menu structure that Xiaomi makes with each update.
It is worth considering that on some models with global firmware, but Chinese origin, some of the functions of Google may be limited. In this case, the standard path through Settings → Password and Security → Privacy → Special access can also lead to the goal.
⚠️ Note: If the Smart Lock is gray or missing, make sure the device has the primary screen lock method (PIN, pattern lock or password.
Activation through the developer menu and special features
Sometimes standard paths are not working because of interface bugs or region-specific settings, and in these cases, the Android Special Features menu comes to the rescue, which is a universal key to many hidden features of the system. Go to Settings, select Advanced Settings, and find Special Features.
In the list that opens, you need to find Trusted Agents, where you can manage the smart unlock components, find Smart Lock or Trusted Places on the list, and make sure the switch is activated, and if the slider is turned off, the system won't respond to your actions, even if the settings are set correctly.
For advanced users who aren't afraid to experiment, there's access through the developer menu. To get there, you have to click on the build number several times in the About Phone section. Once the developer mode is activated, a new section will appear in the advanced settings. Although there's no direct Smart Lock settings, you can reset trusted agents if the system is not working properly.
Also worth checking is the settings of Google Play Services. Since Smart Lock is part of the Google ecosystem, its operation is directly dependent on the state of services. Go to Settings → Apps → All apps, find Google Play Services and check if it is not limited in the background or access to geolocation.
- 📍 Make sure that geolocation is enabled globally, otherwise location determination will not work.
- 🔐 Check if a reliable screen locking method is installed as the primary method.
- 📱 Update Google Play Services to the latest version through the Play Market Store.
Configure trusted devices and Bluetooth
One of the most useful features is unlocking when you have a trusted device nearby, which can be a Bluetooth headset, a smartwatch, or an in-car multimedia system. To get started, you need the external device to be paired with a Xiaomi smartphone via the standard Bluetooth menu.
Once paired, go back to your Smart Lock settings and select Trusted Devices. Press the add button and the system will prompt you to select from the list of available gadgets. Choose the device you want. Now that the phone detects a signal from that headset or watch, it will automatically remain unlocked even if the screen is gone.
It's important to understand the range of the phone. The smartphone is constantly scanning the airwaves for the signal of a trusted device. If the connection is interrupted (you've removed the clock in the closet or left the Bluetooth range), the phone is instantly locked, which provides a balance between convenience and security.
Some users complain about increased battery consumption when using this feature. Indeed, the constant search for a Bluetooth signal consumes energy. However, modern Bluetooth Low Energy (BLE) modules used in most wearable devices minimize this effect. If the consumption seems critical, you can customize the feature only for the car, not for a constantly worn watch.
☑️ Checking Bluetooth connection
Use of trusted locations and geolocation
Trusted Places allows your phone to remain unlocked when you are at home or at work. To work correctly, geolocation accuracy is critical. In your location settings on Xiaomi, you need to select High Precision Mode that uses GPS, Wi-Fi and mobile networks.
To add space, go to the appropriate menu in the Smart Lock settings and click Add Trusted Place. You will be asked to select a dot on the map or use your current location. It is recommended that the range is not too small so that the fluctuations of the GPS signal do not lead to permanent locking of the screen when walking around the room.
The system periodically checks your location in the background. On Xiaomi smartphones with their aggressive energy savings, this can cause problems. If the feature stops working, go to the battery settings, find the Google Play Services app and set the Unlimited mode. This will prevent the system from "killing" the geolocation verification process.
⚠️ Attention: Using trusted locations reduces overall security.If you lose your phone at home, anyone who finds a device within a given radius will have access to the data without a password.
Functions "With You" and "Unlocking by Voice"
The On-body detection option uses an accelerometer and a gyroscope to determine whether the phone is in motion with you or lying on the table. If you put the phone on the table in a cafe, it locks. Once you pick it up, it unlocks (provided that a password has been entered before), a feature that sometimes works with delay or false positives on Xiaomi.
Voice Match allows you to unlock your device with OK Google, which is convenient when your hands are busy, but it's not a highly secure feature. You can play a voice mold from a good recording, so you shouldn't rely on it to protect your banking apps or sensitive data.
To activate voice control, you need to configure Google Assistant. Go to the assistant settings, select Hey Google & Voice Match and do the training procedure by repeating the activation several times. After that, the Smart Lock menu will allow you to use the voice to unlock.
It’s worth noting that on some Xiaomi models, especially custom builds or in certain regions, features tied to Google Assistant may not work smoothly, and in such cases, it’s better to rely on Bluetooth unlocking or biometrics that work faster and more reliable.
| Smart Lock function | Requirements | Impact on the battery | Level of security |
|---|---|---|---|
| Trusted devices | Bluetooth, pairing | Low (BLE) | Medium. |
| Trusted seats | GPS, geolocation | Average. | Low. |
| With you. | Accelerometer, gyroscope | Low. | Low. |
| Voice unlocking | Microphone, Internet | Minimum | Very low. |
Resolving problems and frequently asked questions
If none of the features work, try resetting Smart Lock. This won’t delete your data, but will return the security settings to factory values. Go to Settings → Apps → Show all the apps, find Settings (system app), select Storage and click Clear (be careful, this may reset some system preferences, it’s better to look for a cleanup specifically for the Smart Lock component in the special features menu).
A common problem is conflict with antivirus or third-party launchers. If you use a custom interface, try temporarily returning the standard launcher and checking the function. Also make sure that the date and time on the device are set automatically, since security certificates depend on the current time.
What to do if the Smart Lock is lost after the upgrade?
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For maximum compatibility, use the original Xiaomi accessories for Bluetooth unlock function, as they have deep integration with the MIUI system.
Why doesn’t Smart Lock work with my Bluetooth headphones?
Is it safe to use a smart lock in a public place?
Can I set up a Smart Lock for multiple users?
Does the enabled Smart Lock affect the operation of banking applications?
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Smart Lock on Xiaomi is a balance between convenience and risk.Use trusted devices for everyday wear, but turn off geolocation unlock in crowded areas.