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UMIDIGI S2 Pro test

UMIDIGI S2 Pro - Waterproof ?! 18: 9 China smartphone

The UMIDIGI S2 Pro is the new 18: 9 smartphone from the Chinese manufacturer "UMIDIGI", which was once only known as "UMI". The smartphone was announced in August 2017, and it is now available, which is why we will take a closer look at the final specifications of the smartphone in this article.


The UMIDIGI S2 Pro is, after the recently released S2 without the “Pro addition”, the second smartphone from the Chinese manufacturer that is based on the design of a Samsung Galaxy S8. The main focus is on the large, high-resolution 6 inch display with an aspect ratio of 18: 9.


display information

The smartphone's display has a diagonal of 6 inches and has a resolution of 2160 x 1080 pixels. UMIDIGI itself speaks of a screen-to-body ratio, i.e. a ratio of display to housing, of a full 90%. Regardless of whether they are large or small smartphone manufacturers, almost every manufacturer has whispered about this information. Based on the case dimensions, which are 158.1 x 74.6 x 8.8 mm for this smartphone, as well as the display diagonal and the display resolution, you get a value of only 78.77%. A  Xiaomi Mi Mix 2  For comparison, for example, one reaches 80.79%. Even if UMIDIGI flunkert with this indication, the Smartphone offers a comparatively large display, whose housing dimensions are not however over a 5.5 Zoll Smartphone lie.

The panel comes from Sharp and is of the "TDDI In-Cell" type. Such in-cell panels are primarily characterized by the fact that the LCD and the touchscreen are connected to one another without intermediate layers, which at the same time allows the production of a lighter and more compact panel. The display is protected by Corning Gorilla Glass 4, which is characterized by high scratch resistance and break resistance.

Processor and memory

processor information

Every year the UMIDIGI S2 Pro also relies on the tried and tested MediaTek Helio P25 processor, which can also be found in many other mid-range China smartphones. It is an octa-core processor whose Cortex-A53 cores clock with up to 2.6 GHz. The graphics processor of the system-on-chip is a so-called Mali-T880 MP2 GPU. The Helio P25 System-on-Chip has already proven itself in many other smartphones that we have tested. Although the system will not be able to keep up with other high-end smartphones in terms of performance, almost all of the smartphones with Helio P25 SoC that we tested convinced with adequate everyday performance with smooth multitasking and sufficient gaming suitability. The storage equipment of the S2 Pro is generous. A 6GB DDR4X memory and a 128GB eMMC5.1 flash memory are installed. A memory expansion using a microSD memory card is possible at the expense of the second nano-SIM slot.

Overview of the smartphone


The smartphone has a dual main camera on the back. When choosing a sensor, UMIDIGI opted for a 13 megapixel Sony IMX258 main sensor and an additional, unspecified, 5 megapixel sensor. It is very likely that it is the same sensor combination that has already been used in the smaller UMIDIGI S2. Incidentally, despite the specification of a 2 megapixel sensor, the first model of the S5 did not have such a built-in. To what extent this also applies to the S2 Pro will have to be shown in the test. Further information about the camera would be an F2.0 aperture and PD autofocus. The front camera uses an unspecified 16 megapixel image sensor. In general, UMIDIGI only lets a little information about the front camera through with this smartphone, which is why you can (possibly) expect a "surprise".

Design, battery and others

Information on water protection

As already mentioned, the dimensions of the case are 158.1 x 74.6 x 8.8 mm with a weight of 186g. Thus, the UMIDIGI S2 Pro is a large smartphone in a compact housing. The housing itself is made of one piece according to the so-called “unibody” design and is made of metal. As a further highlight, in addition to the 18: 9 display, UMIDIGI promises protection against water and dust. This protection is realized by a special nano-coating. In the test it could be interesting to what extent the UMIDIGI S2 Pro is actually waterproof, or whether the manufacturer has gone too far again. Other features include a smart unlocking function using face recognition, a large 5.100 mAh battery, which is supposed to ensure a long battery life, and a fingerprint scanner. The usual mobile radio frequencies in this country are fully supported. As a dual SIM smartphone, the S2 Pro can be operated with two nano SIM cards. GPS / GLONASS, as well as the usual sensors (acceleration, proximity and brightness) are available. The smartphone supports dual-band WiFi (802.11 a / b / g / n) and Bluetooth 4.0 for wireless transmission. Android 7.0 is preinstalled as the operating system.


UMIDIGI has its permanent place in the field of China smartphones and is already one of the better-known producers. Nevertheless, the manufacturer is often criticized for giving incorrect information more often, especially with regard to the hardware specifications. The same could also apply to the UMIDIGI S2 Pro. The "nano-coating" in particular, which is intended to provide protection against water and dust, leaves questions unanswered. Although there are actually such (spray) coatings that can protect the hardware from water, there is no question of complete and long-lasting water protection. If you already order the UMIDIGI S2 Pro now, you shouldn't be one of the first to go swimming with it as a precaution and should rather wait for the first reviews of the device.

 The UMIDIGI S2 Pro is available now and costs £ 1 in Presale on GearBest 255.10 €. Shipping will take place from mid-December. 

Timo Altmeyer Avatar

Launched the website in 2016 and has been an active editor of news and test reports in all areas of technology ever since.

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 Processor and memory 
CPU: MediaTek Helio P25 (MTK6757)
GPU: Mali T-880 MP2
Internal memory: 128GB eMMC5.1
Memory extension: Yes

Display Type: Sharp TDDI In-Cell
Display diagonal: 6 inches
Display resolution: 2160 x 1080 pixels
Screen Protector: Corning Gorilla Glass 4

Main Camera: 13MP (Sony IMX258) + 5MP
Front camera: 16MP

Dual SIM: Yes
SIM size: 2x Nano SIM

WiFi: 802.11a / b / g / n
Bluetooth: 4.0
GPS: Yes

* Accelerometer
* Proximity Sensor
* Brightness sensor

Battery: 5.100 mAh
Connection: USB-C

Operating system: Android 7
Size: 158.1 74.6 x x 8.8 mm
Weight: 186g

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