Xiaomi Mi Mix 2S Review - A Worthwhile Upgrade?

by 13. December 2018
Hardly any other (China) smartphone has caused such a sensation in recent months. After months of leaks, Xiaomi finally dropped the covers on the 27.03 and introduced the Xiaomi Mi Mix 2S. In the meantime a test copy has reached me and has been accompanying me as a "daily driver" for 6 weeks. How the smartphone strikes, you'll find out in the following review!



Xiaomi Mi Mix 2S


Processor and memory
CPU: Qualcomm Snapdragon 845
GPU: Adreno 630
RAM: 6GB / 8GB (LPDDR4x)
Internal memory: 128GB / 256GB (UFS2.1)
Memory extension: no

Display diagonal: 5.99 inches
Display resolution: 2160 x 1080 pixels
Screen protector: Toughened protective glass
Multitouch: 10 fingers

Main camera: 2 x 12 megapixels
* Aperture f / 1.8 and f / 2.4
* 4 axes OIS
* AI mode
* Autofocus
* Dual Tone LED Flash
Front camera: 5 megapixel
* bokeh
* AI Beauty

Dual SIM: Yes
SIM size: Nano SIM

GSM 850 / 900 / 1800 / 1900 MHz
CDMA BC0 / BC1 / BC6 / BC10
WCDMA B1 / B2 / B3 / B4 / B5 / B6 / B8 / B9 / B19
TD-SCDMA B34 / B39
CDMA EVDO BC0 / BC1 / BC6 / BC10
FDD-LTE B1 / B2 / B3 / B4 / B5 / B7 / B8 / B12 / B13 / B17 / B18 / B19 / B20 / B25 / B26 / B27 / B28 / B29 / B30
TDD-LTE B34 / B38 / B39 / B40 / B41

WiFi: 802.11 a / b / g / n / ac MU-MIMO
Bluetooth: 5.0
GPS: Yes

* Ultrasonic distance sensor
* Ambient light sensor
* Accelerometer
* Proximity Sensor
* Hall sensor
* E-Compass
* Fingerprint Sensor

Battery: 3.400 mAh
Quick charge function: Quick Charge 3.0
Qi store: Yes
Connection: USB-C

Operating system: MIUI 9
Size: 150.86 74.9 x x 8.1 mm
Weight: 189g

What's in the box

1x smartphone
1x protective cover
1x SIM needle
1x charging cable
1x charger
1x adapter
1x user manual

Foreword: Xiaomi Mi Mix 2S

Xiaomi has ushered in 3's round of its tri-bezel-less smartphone lineup. The Xiaomi Mi Mix 2S cleverly combines the advantages of both previous models (Xiaomi Mi Mix and Xiaomi Mi Mix 2) and can come up with significant hardware upgrades.

Design, workmanship and delivery

Decisive for each Xiaomi mix smartphone has always been almost-rimless design, At times it was mentioned that the smartphone with "Notch" will appear. Again, other leaks made the smartphone a completely borderless mobile device with a small front camera recess.

Look at the display of the Xiaomi Mi Mix 2S

Ultimately, Xiaomi remains true to the previous design line and publishes the mix 2S in the design of its predecessor. In addition to the tri-bezel-less design also remain the Aluminum frame and the high quality Ceramic back receive. Meanwhile, the tri-bezel-less design type is no longer all that spectacular, but Xiaomi was able to do so many times Design Award (iF Design / IDEA Gold Award).

The smartphone is set up as follows:

As befits a tri-bezel-less smartphone, most of the front taken by the 5.99 inch large screen. Despite the comparatively large display, the smartphone is included Dimensions of 150.86 x 74.9 x 8.1 mm and a Weight of 189g barely larger than a traditional 5.5 inch handheld.

Back of the Xiaomi Mi Mix 2S

The distance of the display to the side Changing the case (Bezel) is just 2 mm. Slightly larger is the upper distance. There, the narrow receiver will find its place in the middle. The front camera is located on the right below the display. The distance to the edge of the housing measured there is 9 mm. Also housed in the lower section is one white-shining LEDthat notifies you of incoming calls or notifications.

The housing frame is made of metal. Only the special edition of the smartphone relies on a full ceramic housing. On the left is the dual SIM card slot, On the opposite side are the power button and the volume rocker. The frame top includes a microphone. The frame underside is also equipped with a microphone, a speaker and a center USB-C socket equipped. On a 3.5 mm jack audio jack is omitted.

The aluminum frame of the Xiaomi Mi Mix 2S

The high quality Ceramic back Not only is it scratch-resistant, it also makes a lot of visual sense. Compared to the predecessor models, the grip has improved. The smartphone is surprisingly less slippery in the hand. However, the vulnerability to fingerprints has remained. The rear construction hardly differs from the previously tested one Xiaomi Note 5 Redmire, The smartphone is arranged with a vertically main camera equipped, which is located at the top left of the case back. In the middle, in the upper third of the back, is also a circular Fingerprint scanner.

Front with display

The Build quality of the smartphone is not to complain about. The individual elements are composed cleanly without gaps. The side buttons sit firmly in the case and have a good pressure point.

To complain about, however, is the Processing quality of the supplied protective shell, After removing the smartphone from the shell twice, cracks appeared on the edges of the shell! Of the What's in the box includes the smartphone, a protective plastic shell, a charger (5V 2.5A), a USB-C cable, a USB-C to 3.5 mm jack adapter, a SIM needle and a user manual.


5.99 inch large display (Japan Display Inc.) solve with 2160 1080 x pixels and thus comes on Aspect ratio of 18: 9, An advantage of this format is the handiness. Despite the large 5.99 inch display, the smartphone is in its entire size Narrower than comparable 16: 9 devices and can thus continue to be easily operated from left to right with one hand. From the information on the display diagonal, the resolution and the dimensions results Screen-to-body ratio of 81.95%, A point density of 403 DPI ensures a pin-sharp presentation.

Other display features are Contrast ratio of 1500: 1 (manufacturer) and the support of the DCI-P3 color space, A particularly interesting display feature is the output of Mobile HDR (HDR10), which enhances the display presentation with corresponding HDR content.

display measurement

Display measurements showed a maximum luminance of about 438 cd / m² and one Black value of about 0.47 cd / m², This results in a Contrast ratio of 932: 1, For an IPS panel, this value is acceptable, but in no way comparable to an AMOLED panel of other high-end smartphones.

Compared with last year Xiaomi Mi Mix 2 Above all, the color fastness has improved. Measured with default settings, the average color difference is one Delta E of 2.3, Both the DCI-P3 and the sRGB color space, the Xiaomi Mi Mix 2S holds in the standard color mode as far as possible. The illumination of the panel is even.

Display in everyday life

In everyday life, the display convinces by a pleasant rich color representation, Also convincing is the good viewing angle stability, Even from very flat viewing angles, no serious color and brightness deviations can be detected. Readability in high ambient brightness, especially outdoors, is good.

Display settings and functions

Within the settings, the display can be extensively adjusted. The color temperature is in the given Warm, Standard, and Cool modes selectable. A stepless color adjustment is possible. Both the brightness and the contrast can be automatically adjusted to the ambient brightness. The ambient light sensor works quickly and accurately. Also available is a Reading and night modetime-controlled filtering blue light. With "Tap-to-Wake" The screen can be activated by tapping twice.


The Touchscreen proved to be very precise in the test. Multitouch is supported with up to 10 concurrent inputs. An input delay does not occur. To protect the display, the Mi Mix uses 2S tempered protective glass an unspecified manufacturer. After the 6-week everyday use, no scratches on the display glass remained. The lubricity is good, without the appearance of too much fingerprints and streaks.


Processor and memory

You do not have to worry about performance problems. The Xiaomi Mi Mix 2S is one of the first smartphones in addition to the Samsung Galaxy S9 (International) High-end SoC "Qualcomm Snapdragon 845" are equipped. The system-on-chip is composed of, among other things 8 Kryo 385 processor cores together clocking up to 2.8 GHz.

Compared to last year's SoC, the Snapdragon 835, the new Snapdragon 845 works faster up to 25%. Despite the extra power Qualcomm has the Energy Efficiency optimized again. Also new is the processor graphics of the SoC. The Adreno GPU 630 promises enough power to play current mobile and AR games fluently.

The can also be seen storage facilities. Das "Standard Model" offers one 6GB LPDDR4X Memory and one optional 64GB or 128GB UFS2.1 flash memory. Das "Premium" model is in turn with one 8GB LPDDR4X Memory and a full 256GB UFS2.1 flash memory equipped. A memory expansion by means of MicroSD memory card is not provided.


Thermal throttling of the Xiaomi Mi Mix 2SIn the benchmark tests, the Xiaomi handheld consistently performs very well. Both CPU, GPU and memory tests achieve top-notch scores. Conspicuous, however, is a relatively fast eintretendes Thermal throttling, Already after 5 minutes under full load, the performance is greatly reduced. In everyday life, however, this fact is not noticeable.

Performance in everyday life

Referring to the everyday performance, the Xiaomi Mi Mix 2S leaves nothing to be desired. The MIUI user interface can be operated smoothly throughout. Animations are displayed smoothly and fast scrolling movements are done without a trailer.

The transition between apps is fluent. The large and fast 6GB memory instantly loads already opened apps from the clipboard. Even after countless open apps, the smartphone does not noticeably slow down.


Also in gaming, the smartphone is a very good figure. current Mobile games, such as PUBG are playable even on high settings without picture dips. Textures are loaded without delay. Thermal throttling is not noticeable in contrast to the benchmark test. The heat is after 30 minutes of gaming at mild 39 ° C.

PUBG Gaming with the Xiaomi Mi Mix 2S

User Interface

The smartphone is delivered with the in-house MIUI 9.5 user interfacethat on Android 8.0 based. MIUI is a "total conversion" that is visually and functionally different from Stock-Android. Meanwhile, MIUI 10 Global Stable with Android 9 Pie is also available for the Mi Mix 2S. New are above all AI improvements, which improve the interaction with the user. The update will be distributed to OTA.

To give a few examples, MIUI waives, among other things, an app drawer so that all apps are stored directly on the home screen. Useful features are the Split-screen mode, with which two apps can be operated simultaneously in the foreground. The Second-space function allows multiple user profiles to be created so that the smartphone can be used as a private as well as a business mobile device.

The settings from MIUI are comprehensive. Due to the lush range of functions you are hardly dependent on additional, system-extending apps. In the MIUI Security Center apps can be monitored in detail and their permissions can be customized. Various Google Apps, including the Google Play Store, as Microsoft Office applications are already preinstalled in the Global Version of MIUI. Updates are distributed regularly to OTA (Over The Air).


The smartphone is equipped with a dual main camerawhose sensors are in one 12 Megapixel Sony IMX363 Sensor with an Wide-angle lens, f / 1.8 aperture and optical image stabilization, as well as one 12 Megapixel Samsung S5K3M3 Sensor with an Telephoto or portrait lens and f / 2.4 aperture divide. The front camera solve with 5 Megapixel on. The sensor used is on Omnivision OV5675 CMOS.

Tip: You want to find out which image sensors are installed in your Xiaomi smartphone? Go to Settings> My Device and click on "Kernel-Version". The "HW Test" window opens. Under "Software Version" you will find all information about individual hardware drivers.

Practical test of the main camera

Photo mode

In terms of recording quality, the Xiaomi Mi Mix 2S delivers a head-to-head race with other flagship smartphones.

Colors, details and noise

Image captures appear very lively. The Color reproduction is fullbut without losing any of its naturalness. Aberrations in the form of chromatic aberration may occur, but are more of a rarity. The color fidelity is maintained even in low light conditions, although the color saturation decreases.

More full-resolution test shots can be found at this one article

Captured under good lighting shots shine through a high detail reproduction, A uniform definition is given from the center of the image to the edges. noise The smartphone has a good grip on both good and bad lighting conditions. Especially under poor lighting conditions arise surprisingly low-noise images. However, a certain loss of sharpness and detail is noticeable with increasingly weaker ambient light.

dynamic Range

A automatic HDR mode also helps to capture high-contrast scenes. Of the dynamic Range is good, even if he does not quite get to other flagship smartphones. In bright image areas, there may be loss of detail.


Telephoto or portrait lens of the second image sensor allows one lossless 2 zoom, 2-zoom recorded images are high-resolution and convince by a pleasantly high degree of detail. If you zoom in addition, takes place in flowing change in the digital zoom, The recording quality decreases accordingly.

Autofocus, shutter speed and LED flash

The Dual-phase auto-focus detection focuses precisely and fast. The trip time It is extremely low and will not be delayed too much even in low light conditions. With switched on LED flash can be evenly lit, true color and at the same time also low-noise image recordings.

AI and bokeh

A newly introduced features is the support by Artificial Intelligence (AI), Among other things, this will make it possible dynamic bokeh effect, One Image enhancement by scene detection, as well as the automatic recognition and translation of business cards, currencies and other texts. In the test, the AI ​​mode proved less helpful. Although the AI ​​has a high recognition rate for objects and scenes, the image improvement is limited. Only colors appear stronger as a result of the activated AI and the contrast is slightly increased. Unfortunately, this also suffers from the naturalness of the recordings.

Another feature of the main camera is the so-called "Bokeh mode", This is a photographic sharpness effect that puts people and objects in the foreground. The background should blur unfocused. The implementation is only partially successful. For the most part, people and objects are neatly extracted, but the slightest movements can quickly increase Extrahierungsfehlern to lead. The transition between superficial sharpness and blurred background is pleasantly soft.

video mode

Videos takes the main camera with maximum 4K resolution at 30 images-per-second on. Unfortunately, Xiaomi has once again decided to limit the full-HD video capture capability to 30 images-per-second. Slow motion are in turn in Full HD with up to 240 pictures-per-second possible!

The Video recording quality is good overall. The image stabilization but quickly reaches its limits and is inferior compared to other smartphones similar price range. The same applies to the recording quality, Although the sound is recorded at a high bitrate, it sounds unnatural and tinny. Commendable again is the very fast-reacting autofocus.

Practical test of the front camera

The Front camera mode The MIUI camera app comes with numerous Beauty Filter fitted. Furthermore, stand Auto-HDR mode, Portrait mode (bokeh effect) and different (Color) Filters to select.

With the 5 megapixel front camera made recordings convince by a high level of detail and uniform distribution of sharpness, Unfortunately, many pictures are overexposed. Increasingly worse light conditions increase the noise component the recordings. Videos captures the front camera with maximum Full HD resolution.



The Xiaomi Mi Mix 2S supports the the world's most popular mobile radio frequencies and bands, In terms of frequency diversity, Xiaomi distinguishes between the standard model and the premium model. Here is an overview of the individual frequency bands.

Standard Model (64GB / 128GB)Premium model (256GB)
GSM: B2 / B3 / B5 / B8
WCDMA: B1 / B2 / B4 / B5 / B8
TD-SCDMA: B34 / B39
TD-LTE: B34 / B38 / B39 / B40 / B41
FDD-LTE: B1 / B2 / B3 / B4 / B5 / B7 / B8 / B12 / B17 / B20
GSM: B2 / B3 / B5 / B8
CDMAlX / EVDO: BC0 / BC1 / BC6 / BC10
WCDMA: B1 / B2 / B3 / B4 / B5 / B6 / B8 / B9 / B19
TD-SCDMA: B34 / B39
TD-LTE: B34 / B38 / B39 / B40 / B41 (2496-2690)
FDD-LTE: B1 / B2 / B3 / B4 / B5 / B7 / B8 / B12 / B13 / B17 / B18 / B19 / B20 / B25 / B26 / B27 / B28 / B29 / B30

It can be seen that both the standard model and the premium model are straight Well prepared for the German market are. The usual LTE frequencies in this country are all supported. As Dual SIM smartphone The Mix 2S can be equipped with two SIM cards. Each of the two slots is LTE-capable. Volta is supported. VoWiFi not (yet). In mobile, the smartphone convinced by a high signal strength and good voice quality, Spoken words are transmitted clearly and intelligibly in both directions.

Wi-Fi and Bluetooth

For wireless data transfer, the handheld with a Dual AC MU-MIMO WiFi module and a Bluetooth 5.0 module fitted. In WLAN, a high data throughput is achieved. The signal quality and signal strength remain constant at a greater distance to the transmitter. The same applies to the Bluetooth connection stability and connection strength. A connected Bluetooth speaker and a Bluetooth hands-free device could be connected and used correctly in the test.

GPS and sensors

The location done over GPS, Galileo, GLONASS or Beidou, A GPS fix comes about quickly outdoors. The location is determined exactly down to a few meters, so that error-free navigation is possible. Inside the building, too high-signal GPS module, albeit somewhat delayed, a GPS fix. An additional one E-Compass Helps to determine the direction and facilitates pedestrian navigation.

The sensory equipment includes a proximity sensor, a gyroscope, an accelerometer, an e-compass, a barometer, an ambient light sensor, and a Hall sensor. NFC is available and convinces with a wide reception area. On Fingerprint scanner for safe unlocking the smartphone is located on the back. The detection rate is high and the unlocking time is relatively low. Face Unlock was not yet implemented at the time of the test.


Like the previous model, the Xiaomi Mi Mix 2S is also available with one Stereo Speaker System fitted. In addition to the speaker in the frame, the smartphone also uses the earphone as a speaker. The sound quality is consistently good from low to high playback volume. The stereo sound comes to high volume but less apparent. The earphone speaker is inferior to the speaker housed in the rack just in terms of the playback volume.

On a 3.5 mm jack audio jack is omitted. Instead, headphones can only be connected via USB-C. In order to be able to use also "old" 3.5 mm jack headphones, Xiaomi places the appropriate Smartphone USB-C to 3.5 mm jack adapter at. The sound quality via the adapter leaves nothing to be desired. Different sound profiles and an equalizer can be configured individually via the settings menu.


The predecessor model remained the same battery capacitywho Xiaomi with 3.400 mAh indicates. In retrospect, this value also corresponds to reality. In the everyday test, the smartphone reaches an average Screen-on-time of 5 ½ - 6 hours, Ideally, about 7 hours are possible. At the latest after 1 ½ days the smartphone must be recharged.

Charging the smartphone can be wired via USB-C or via wireless Qi charging function. If Quick Charge coming Quick Charge 3.0 for use. A full charge with the supplied charger takes just under 100 minutes. A likewise tested charging process with the help of the Xiaomi Qi charging station, which can be purchased separately, takes just under 180 minutes.

Price Comparison

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Prices last updated on: April 5st, 2020 14:03

Price history

Current prices

1-5 working days
3-7 working days
Buy geekbuying
1-5 working days

Price too high? Use our price alarm clock!

Prices last updated on: April 5st, 2020 14:03

Final Words


Attractive design
Very good build quality
Powerful hardware
Current Android OS
Excellent display
Very good camera equipment
Comprehensive mobile phone support
Good reception quality
Fast fingerprint scanner
Good battery life, Quick Charge 3.0 and Qi charging


Processing quality of the supplied protective shell
Vulnerable to fingerprints
No 3.5 mm jack socket
No memory expansion
White LED notification LED only
Unhelpful camera AI
Video image stabilization and sound recording quality
Weak stereo sound

First impression
User Interface
Fingerprint scanner
GPS & sensors

With the Xiaomi Mi Mix 2S, the Xiaomi Mix series is upgraded again. The design remains the same, but on the hardware side a lot has happened. Equipped with the high-performance Qualcomm Snapdragon 845, no performance losses are expected in the long term. The high-resolution display is colorful and based on the DCI-P3 color space. There is a major upgrade to last year's Xiaomi Mi Mix 2 regarding the camera set. The dual main camera delivers excellent recording quality and is similar to other high-end devices.

Because of the local mobile phone use you do not have to worry. The mobile radio frequencies and bands usual in this country are all supported. The voice quality is first class. You have to do without a 3.5 mm jack audio jack and a memory expansion option. Overall, the Xiaomi Mi Mix 2S is a successful and highly recommended high-end smartphone.

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Hey Timo, yesterday my Mi Mix 2S 128GB arrived. In your review, I read that there are already Android 9 for the smartphone. Mine is still running on Android 8. How can I update this? Would be great if you could give me a tip there.