Xiaomi Mijia LDS version Vacuum robot: A sensible upgrade?

Hey, guys! Just a heads up: The linked offer is already a bit older and the price of the gadget might have changed or it might not be available anymore.

The Chinese tech giant never tires of developing: Xiaomi launches an improved version of the Mi Robot. It features minimally more suction power, a wiping function with a large water tank and an improved laser distance sensor (LDS). A sensible upgrade? Our review.

Xiaomi Mijia LDS Version Vacuum Robot Comparison Mi Robot

Xiaomi Mijia LDS at GearBest for $311.99

Xiaomi Mijia LDS at Geekbuying for $404.99

Technical data: Comparison to Mi Robot

Mijia Robot STYJ02YM

Xiaomi Mijia Robot 1S Vacuum Robot Black

Mi Robot


Xiaomi MI Robot Vacuum Robot Model

Suction power2100 pa2000 pa
NavigationLaser Space SurveyingLaser Space Surveying
Noise level50-65 dB (depending on suction stage)67 dB
Battery3200 mAh5200 mAh
Dust chamber/water tank0.55 l/0.55 l0.42 l/ no wiping function
Working time2 h2.5 h
Weight3,6 kg3,8 kg
Dimensions34.5 x 34.5 x 9.4 cm34.5 x 34.5 x 9.6 cm
Inclinations15°, up to 2 cm15°, up to 2 cm
  • Room division (single and multi-room cleaning)
  • card storage
  • mapping
  • wipe function
  • Voice control via Xiaomi AI Speaker
  • Laser room measurement
  • mapping
  • carpet detection
  • Alexa control

Scope of delivery of the Xiaomi Mijia LDS

The scope of delivery includes other than the robot:

  • Charging station with CN charging cable
  • 0.55 l large dust chamber
  • 0.55 l large water tank (very large)
  • one additional brush head
  • additional microfibre cloth for wiping
  • small cleaning tool
  • Operating instructions in Chinese (graphics are sufficient)
The scope of delivery of the Mijia LDS.

The relatively large water tank for a hybrid model is a direct eye-catcher. You can also look forward to an additional brush head (works with one) and an additional wipe. Since the model is designed for China, there is no US charging cable, no operating instructions in several languages or CE mark. Whether there will be an international version of the robot is still unclear, we know the uncertainty of the Mi Robot 1S, for which there is still no international version.

Design and Processing: Comparison with the 1st Gen.

Compared to the new Mi Robot, the robot is barely noticeable to be slightly flatter (0.2 cm) and lighter (0.2 kg). With a height of 9.4 cm through the LDS (Laser Distance Sensor) on the upper side, you should check whether the robot fits under some pieces of furniture before buying. The Mijia LDS looks good, it looks flat, modern and also the workmanship is top. As with all Xiaomi generations to date, the plastic used is of very high quality.

Generation change.

The individual parts and accessories are compatible with those of the other models, allowing owners of another Xiaomi vacuum robot to apply their purchased accessory packages directly to the new model.

The bottom clearly shows: Never change a running system.

There’s nothing more to say here either, with this valuation factor you can only seldom blame the Chinese tech giant.

Performance: Sensible upgrade to Mi Robot?

Laser room measurement via LDS, mapping, room division … The list of concentrated vacuum robot technology in the new version is long. In fact, the upgrade was only optimized, but nothing was functionally removed. Accordingly, we will deal with the differences here, for all further information we recommend a look at the Mi Robot review.

One without, one with a wipe.

The suction power was increased from 1800 pa to 2100 pa – the current best value for vacuum robots. This is only 300 pa more than its predecessor, and is only marginally noticeable. The laser distance sensor has also been optimised and can now detect obstacles and contours up to a distance of 8 m. However, the navigation of the Mi Robot of the past days is already very mature and absolutely sufficient.

The LDS of the Mijia is even more powerful.

The new LDS is extremely precise

The new LDS, however, has it all: not only the distance at which it determines obstacles is impressive, but also the sensitivity. The Mijia LDS is almost too sensitive, so he hardly uses his bumper at all and docks almost no obstacles, but turns a few centimeters before. However, this also leads to some dirt and dust being kept out of the way around these obstacles. But if you own sensitive furniture, you should be happy about it. He even recognizes glass doors.

At a distance of 8 m, the robot precisely detects obstacles.

During some test rounds it is noticeable: The working speed is quite high, the working method is the same as with the previous Xiaomi models: First the outer edges, corners and walls are removed and then the inner area is worked off. So the robot works its way through the walls, the tester is satisfied until something unforeseen happens:

“No, I’d rather not, it’s too high for me.”

Although the robot approaches it smartly by trying it sideways over the cable cover, it gives up after two attempts, and no other new model has failed for several months. Bitter, that’s not enough for the top rating. After all, the cable cover is only 2 cm high and even rounded, which should be possible with a model above $250. Well, here the Mijia LDS gets a few minus points. The autonomous retrieval of the charging station is no problem.

Control via Xiaomi Home App

Ladies and gentlemen, the well known Xiaomi Home App (Android, iOS) is back! Before we ask our robot to enter the WLAN stage, please pay attention to a short security checklist so that everyone can use the robot properly:

  1. Download App (Android, iOS)
  2. Registration via disposable e-mail address
  3. Select China as the region in the app settings.
  4. Switch on Bluetooth and WLAN on smartphone, robot will be found automatically via “Add device”.
  5. WLAN password entered (2.4 GHz network required, switch off 5 GHz only in case of doubt)
The connection works as fast and problem-free as usual.

If the connection with the robot should cause difficulties, you can reset the WLAN – as with the other generations – by holding down both buttons at the same time (3 sec. for example). If there are any difficulties, just tell us your difficulties in the comments and we will help you.

Although you can use the vacuum robot in this country without any problems, you have to use Chinese servers with the app. This is a problem if you already have several devices on other servers in the Xiaomi Home App. Both servers can only be used simultaneously with one trick: Use two app versions (keyword Dual Apps).

After the connection, the typical, tidy Xiaomi interface for vacuum robots awaits us.

Fortunately, the language set in the Xiaomi Home App is transferred to the robot’s interface, so English is available (although not always clearly named). The robot “speaks” Mandarin (at least I think so), but that can be expected. Generally you should know some settings and do them before the first cleaning, let’s have a look.

Settings and functions

Within the app you have the choice between four suction levels. Here with operating volume and suction power information:

  1. Silent (50 dB, 1200 pa)
  2. Standard (55 dB, 1500 pa)
  3. Medium (60 dB, 1800 pa)
  4. Turbo (65 dB, 2100 pa)

Depending on the suction level, the battery performance naturally decreases at different rates. Due to the high working speed, the robot can also be easily vacuumed on “turbo” up to 100 m².

An overview of the individual functions and setting options:

  • Determine suction power: Quiet, Standard, Medium, Turbo
  • Vacuuming, wiping, vacuuming and simultaneous wiping adjustment
  • Determine the amount of water to be transferred from the water tank to the wipe: Low, Medium, High
  • Send back to charging station
  • Start/Stop
  • View cleaning process
  • Schedule working times
  • Vacuum along the edges (Edge function): Robot specifically moves walls and corners.
  • Continued cleaning: As the battery level decreases, the robot returns to the station, recharges the battery and continues cleaning.
  • DND mode (Do Not Disturb mode): Set times at which the robot should not operate.
  • Switching the voice of the robot on and off
  • Divide, connect, change rooms
  • Draw virtual walls and no-go zones on the map
  • Determine the go-to zone: Have the robot clean at a specific point on the map.
  • Locating the robot
  • remote control
On the left the remote control, in the middle schedule working hours, on the right the cleaning history.

Firmware Updates

Firmware updates can be downloaded at the charging station and integrated into the WLAN. Xiaomi’s update policy has been exemplary in recent years, let’s see what’s coming for the Mijia.

Firmware updates must be downloaded from the charging station.

Now what? Let the robot complete a complete journey through the four walls from the charging station (elementary for mapping and room division). Without interruptions, just let it go. Then you get a visual map of the rooms in the app, which you can use to get started. Different from the Mi Robot 1C.

Mapping, room layout and no-go zones

Vacuum robot with LDS = Live mapping in the app. This looks very attractive on the Mijia LDS robot and is very detailed due to the strong laser distance sensor. Gradually, the robot also optimizes routes. In addition, it updates the map as soon as it detects changes, such as a ball or a toy being in the way.

As usual, the mapping is very detailed.

The automatic room division after the map creation allows you to specify when the robot should vacuum or wipe which room (or both) – also in which order.

The Mijia LDS divides the rooms very well independently.

If you are dissatisfied with the robot’s room layout, you can simply rearrange, connect or change the dimensions of the rooms in the app. Fortunately, the rooms can be named by the user, otherwise we would have almost all difficulties with the Chinese characters (see screenshot above).

The rooms can be named by hand.

No-Go zones (areas that the robot should not move) and virtual walls (which only the robot sees and does not drive over) can be drawn on the map and saved as usual. Also works perfectly.

Walls and no-go zones drawn in as examples.

Wipe, vacuum or both?

Using an app, the user can manually set which of the three different working modes he wants to use: pure wiping, pure vacuuming and simultaneous vacuuming and wiping. The 0.55 l water tank is very large compared to other models and allows rooms above 150 m² to be wiped. The dust chamber comes in the same size, so it offers enough space for more elaborate cleaning.

We’ve seen the wipe function on other models before.

The amount of water dripping from the water tank onto the microfibre cloth can also be adjusted in the app. In general, the water tank is very cleverly designed. It not only releases water, but also collects dust. This gives the user the choice of wiping and vacuuming at the same time, or just one of both.

Vacuuming, wiping or both? You have the choice.
Both are possible with the water tank.
The wiper attachment must be mounted on the underside.
But it is also easy to remove.

Wiping is such a thing with vacuum robots, after all most are not able to remove more stubborn stains. This also applies to a certain extent to the wiping function of the Mijia LDS, which does not perform badly at all. If a stain is not stamped too deep into the ground, it will get rid of it. Definitely enough for weekly wiping, but not as effective as manual wiping with a mop – of course. But definitely a work relief.

Conclusion: Exciting upgrade to the first generation?

The Mijia Robot LDS version is aimed at a target group with a smaller wallet who still don’t want to do without a high-end model with lots of functions. Exactly what the Mi Robot has been for more than three years. If you want a wipe function, you’ll be happy, otherwise the noteworthy differences are to be found especially in the room layout and improved navigation. A change from the Mi Robot to the LDS version is only worthwhile from our point of view if you miss the mentioned advantages of the first generation and don’t want to do without them anymore.

Switching to the Mi Robot? You can do it, but you don’t have to.

If you don’t own a Mi Robot yet, you can look at it and buy it with a clear conscience. After all, the price is absolutely reasonable and the Mijia LDS is once again a Xiaomi model that delivers exactly what it promises. However, we would like to point out that a missing CE mark, the mandatory purchase of an adapter and a Chinese operating manual (as of now) must be taken into account as factors in the purchase decision.

What do you think of the upgrade model?

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Why doesn't this affect our review in any way?
Profile picture from Tim


I'm interested in Gadgets, that make our life at home easier - especially when it comes to cleaning the floor or the windows. I was able to test about fifty robot vacuum cleaners since now.

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Comments (12)

  • Profile picture from randomUser
    # 01.05.20 um 23:20


    STYJ02YM and Viomi v2 Pro are basically the same hardware. Do you know if STYJ02YM can be upgraded with Viomi v2 Pro firmware ?

    • Profile picture from Tim
      # 06.05.20 um 10:16

      Tim CG team

      Hi randomUser, this won't be possible cause both producers have their own sales, marketing etc. They won't see a reason to upgrade in this scenario

  • Profile picture from James molina
    # 02.10.20 um 11:30

    James molina

    I’m looking to buy a robot vacuum and in the Philippines the choices are down to Xiaomi since other companies like roomba & eufy are direct imports by sellers and don’t have any warranties. Even Xiaomi products are given only 3 months warranties. My question is are these Xiaomi robot vacuums durable enough to last at least 2 years? Will i be able to use the app since when i checked it’s in chinese on the app store? And if I’m gonna use the vacuum for 2 levels in my house and i want some kind of area scheduling does it mean i have to get the newer model? Or will the old mi robot still do the job for me? I’m neutral about the mopping function. It’s the area scheduling & mapping I care about.

    • Profile picture from Tim
      # 06.10.20 um 14:09

      Tim CG team

      Hi James, yes they definitly live for years. You got to care for them a bit (clean em etc.) but they definitly do. If you want to use it on 2 levels, you have to look for another robot, yes.

  • Profile picture from Moreno Goncalves
    # 17.10.20 um 18:29

    Moreno Goncalves

    Sometimes my robot speaks in english!!! I dont know how or why. But mostly of the time it speaks chinese/mandarin.

    Does anyone knows how to set english voice permanently?

  • Profile picture from Mack
    # 19.11.20 um 10:21


    Hi Tim,
    That's a great review I must say. I'm messaging you as a last resort really. I have purchased one of these robots but I can't get it to work properly as it keeps disconnecting. I've set it up to "Chinese Mainland" region and English language and got it connected to my wifi. It works away and maps out my house. Very impressive and just as you described above. However, it docks before completion (not sure if this is battery related but my ground floor is only around 120m2 so I think it should be able to handle that) but then it disconnects somehow from the wifi and won't work any furhter. I then have to reset it and start again. And worse still, the reset process doesn't ususally work either; it takes several attempts to get it receonnected. And then the same thing again. I've tried the reseller for help but they have no clue. It certainly seems to be software related. App is Xiaomi Home and is up to date. I have both 2.4GHz and 5GHz wifi Not sure if I can reset the robot itself or update the firmware on it? I can't find any reset button, except to press the two main buttons simultaneously (I think that just resets the wifi part?). Of course I only have Chinese manual which is of no use to me! If you can offer any insights, I would be very grateful. It's so frustrating as I can see it's really well made, of good quality, does a really impressive job vacuumming and I'm certain it's just something small that's preventing it from connecting properly.
    Thank you,

    • Profile picture from Tim
      # 19.11.20 um 10:44

      Tim CG team

      Hi Mack, we can handle that. A few things I have to know cause I can't see your phonescreen and how it happens: Does the disconnecting always happen at the same spot? Did you try not using the 5 GHz? And also a factor: In which country are you using the robot? Would you say you have good Wifi in the whole area, the robot should clean?

      Just answer here, I'm quite sure we can make it happen. 🙂

      • Profile picture from Guest
        # 20.11.20 um 21:14


        Hi Tim,
        No, it seems to happen after it returns to dock normally but I'm not sure why it returns as it has never completed the floorplan (I don't think it could be the battery). But from where it starts to return, I can't be certain. And I can't check previous cleans as the app has no history!
        I haven't tried switching off the 5GHz but I will try it and see.
        I'm in Ireland. I've been advised to set my region to Chinese Mainland which I have (I had been trying with region as Ireland with no luck either)
        Yes, the WiFi signal is strong throughout the area

  • Profile picture from Guest
    # 23.11.20 um 11:06


    Update: I tried turning off the 5GHz WiFi but it didn't help. The error was different but I couldn't get the robot to connect at all – see attachment for most recent error.
    The rest of the time, I get a "Device Offline" screen with 4 suggestion to what might be wrong. This happens after partly completing a vacuuming session; the robot returns to dock and next time I open the app, the device is offline.

    Comment picture of Anonymous
    • Profile picture from Mack
      # 28.11.20 um 18:28


      Hi, any further ideas for me? Sorry, I didn't realise that I needed to fill in my name and email address for each message, maybe this affected replies.
      Many thanks,

      • Profile picture from Tim
        # 04.12.20 um 11:45

        Tim CG team

        Hi, maybe start using Great Britain servers if possible? Could you maybe add some screenshots of the mapping?

      • Profile picture from Valdis
        # 08.01.21 um 15:02


        Hi! Had same problem as you and solved. All the drama is hiding in settings. When you set up wifi, in menu at one point are setting, i dont remember exactly, but something with automatic reconnect to wifi, set it to active.
        Problem never come back. If you have any questions, write to email with setting screens. At this point dont wanna reset mine 😀

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