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Home > New Gear > Xiaomi Mijia smart door lock review: a good-value lock with high security and sensitivity  
Xiaomi Mijia smart door lock review: a good-value lock with high security and sensitivity  

Xiaomi Mijia smart door lock review: a good-value lock with high security and sensitivity  

By  Linky Johnson 2019-01-05 30357 0

Smart door lock has been used in many "luxury houses" a few years ago. With smart lock, you don’t need to worry about forgetting taking keys or illegal break-in. However, the smart door lock is becoming affordable for most of us, such as the Xiaomi Smart door lock, with which you can unlock your door via fingerprint, NFC or password. Like some other Mijia products, this smart door is not only full of black technology, but have a high price-performance ratio. How about it on earth? Let's explore it.


Xiaomi Mijia Smart Door Lock 3D Fingerprint Password NFC Bluetooth Unlock - BLACK

Xiaomi Mijia Smart Door Lock 3D Fingerprint Password NFC Bluetooth Unlock - BLACK


Xiaomi Mijia smart door lock design

Like Mijia products, the appearance of Mijia smart door lock is simple and low-key style. The color matching is simple. The whole body is black in the non-operating state. The door handle and the lock hole cover are made of sandy texture materials.

Xiaomi Mijia smart door lock design 

The whole panel material of the smart door lock of Xiaomi is explosion-proof tempered glass made by acrylic IML technology. As a door lock, it is no blame. If the safety problem is neglected, the designer must be “Shi Lezhi”. The strength of the panel material of smart door lock of Xiaomi is comparable to the mainstream smart door lock in the market.

The design of UI interface of door lock is the same as that of ordinary smart door lock. The upper part of the panel is a digital password disk without operation hiding state. It can hide quickly after we input the password or touch it by mistake. Generally speaking, the design of hidden digital password disk has high security performance. It would be better if the display residence time can be set independently.

The design of UI interface of door lock 

The fingerprint recognition area of the door lock is on the door handle. In order to better conform to the ergonomics, the smart door lock of Xiaomi adopts the elliptical groove design. The recognition area is large and the recognition rate is very accurate. In addition, Xiaomi smart door lock also uses sapphire material with Mohs hardness up to 9 to make fingerprint identification area cover. The cost performance is really good.

The fingerprint recognition area of the door lock  

As for the key fingerprint opening of smart door lock, I can say very responsibly that it is the same as our usual door opening operation. When we grasp the door handle, the thumb will naturally be placed in the fingerprint area. While the fingerprint area can quickly identify fingerprints, we can press down the door handle to open the door. In addition, the bottom of the smart door lock is the USB emergency power jack and speaker. The emergency power jack is arranged in a place that is not conspicuous and hardly used in daily life.

The emergency power jack 

The lower part of the outer part of the door lock is the keyhole, which is covered by a circular shell that is pushed up and rotated by a press. When opening a door with a key, we only need to press the circular shell with our thumb, and the key hole can be leaked by the homeopathic rotating shell. Inside the door lock is the anti-lock rotating knob of millet smart door lock, which is a set of almost all anti-theft doors. After entering the door, turning the button, and anti-locking the door, the security performance is higher.

the security performance 

What are the unlock ways of the Xiaomi Mijia smart door lock?

There are up to 5 ways to unlock the Xiaomi Mijia smart door lock, and they are:  Password, keyhole, NFC, Bluetooth, fingerprint.

1. Living fingerprint unlocking

What I have to mention here is the fingerprint unlocking method of Xiaomi smart door lock. It is known that the door lock adopts the living fingerprint unlocking method. Most of the non-living fingerprint unlocking methods on the market use optical fingerprint unlocking, which leads to most unlocking methods being like those in the movie. Illegal persons or protagonists make fingerprint unlocking module by residual fingerprints, then press on the fingerprint unlocking area and open the fingerprint lock to achieve their own purposes.

Living fingerprint unlocking 

But the smart door lock of Xiaomi adopts the technology of living fingerprint, so it can be recognized in many environments, such as dry fingerprint, cut, wet water and so on. Rubber and other simulated fingers can not pass it. Another advantage of living fingerprint is that even wet fingers can be quickly identified, and their safety and convenience are excellent.

2. Password unlocking

Smart door locks on the market almost support password unlocking. The smart door lock of millet house supports the function of virtual password. That is to say, consumers can actually set their own open-door password. They can also be set to the first few bits of password chaotic code, random input, follow-up correct password can still open the smart door lock.

3. Bluetooth unlocking

There are many ways to unlock the smart door lock of Xiaomi, among which Bluetooth is the most convenient way to unlock the door. Because the door lock is equipped with Mijia security chip, it can encrypt all Bluetooth communication content, so the whole unlocking process is safe and reliable. The Bluetooth is also a simple way to unlock mobile phones. As long as you open the main interface of Mijia APP, you can easily click on the lock icon of the main interface to open the door.

4. NFC unlocking

At present, there are many mobile phones supporting NFC function, and they are popular in some of its flagship models. So as long as they are supported, they can be unlocked through NFC function, just like we use mobile phones to brush Metro cards.

Users only need to open a new "door card" in the "Mi wallet" of the Xiaomi mobile phone which supports the NFC function, then write the key of the door card, touch the door lock with the mobile phone, and the door lock responds instantaneously to complete the unlocking. According to official data, the Xiaomi smart door lock can bind 25 NFC devices.

5. Key unlocking

Although the biggest selling point of Xiaomi smart door lock is to let people say goodbye to the trouble of the key, as a door lock, an emergency key is still necessary to open the door. The key hole is designed under the external panel and an integrated concealed design is adopted. There is a small cover plate on the lock hole. The key hole can be seen by pressing down and sliding the cover plate.

Are there any other functions of the Xiaomi Mijia smart door lock?

First of all, the smart door lock of Xiaomi carries a variety of safety sensors.

1. If the keyhole is inserted many times and the lock is not unlocked for a long time, the door lock will give an alarm.

2. The smart door lock panel of Mijia house has abnormal prizing, and the smart door lock will give an alarm. In addition to the alarm on the lock panel, when the lock is closed, the lock tongue inside the lock also has sensors, and abnormal opening of the door can trigger the alarm. Compared with ordinary anti-theft doors, this kind of sensor mounting scheme from inside to outside can be said to be very safe.

the lock tongue inside the lock

Generally speaking, all the above alerts will be updated on Mijia app, which can leave a log record on the user's mobile phone and synchronously push relevant messages. Especially, the latch state detection sensor can detect the latch state. When the door is not locked or concealed, it will remind the user. In addition, the smart door lock of Mijia has mechanical safety bolt, so it is. It is an anti-lock device and can also be regarded as a child safety lock. It needs to press down and rotate hard to lock back. It can prevent children from operating the door back-lock by mistake when they are at home and can't open the door.

Xiaomi smart door lock supports setting temporary password in APP terminal. When there are visitors at home, it can generate a temporary password, and can customize the valid date and valid period. This is also the intimate setting that many smart door locks have in the market at present. The Mijia APP can not only link the smart door lock of Mijia for status viewing, log browsing, remote settings and other operations as mentioned above.


In terms of appearance, Xiaomi smart locks adopt acrylic IML process explosion-proof toughened glass, and follow the traditional simple route. In addition, the smart door lock can be used with Mijia APP. The operation is simple, and it can also connect its home equipment through Mijia App. In addition to the stability of fingerprint unlocking, the security performance of door lock is also very sensitive. In addition, the smart Xiaomi door lock also provides a mobile phone Bluetooth unlock, password unlock, and the emergency key multiple complete use scheme. This Mijia smart door lock can be yours for just $416.06 on GearBest now, which is very cost-effective.


 You may also want to read:
 Mijia intelligent remote control lock: lock and unlock your drawers remotely for $25.99
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 Xiaomi Mijia smart IP camera vs. Xiaomi Xiaofang smart IP camera


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