The full-screen is a mainstream. Now all smartphone makers think only about one thing – to come in with a smartphone with a higher screen ratio. As a result, there have been a few designs for this technology. The Xiaomi Mi MIX 2 uses a tri-bezel-less appearance with no forehead. The iPhone X uses a bangs screen with no forehead and chin. And Huawei uses a full-screen with both the forehead as well as the chin. However, this new trend caused a real problem for the security of a phone. Earlier the manufacturers placed the fingerprint scanner under the home button. With the increasing popularity of full-screen, it was moved back to the rear panel. There were some models with a fingerprint reader on the side. But this is a step back. So Apple decided to bring another security option, Face ID. As for Android-running smartphones, VIVO was the first to announce an innovative and revolutionary technology that should come from Xiaomi much earlier. The under-display fingerprint technology was assumed to appear on the Xiaomi Mi 5S. But later it became known there is much work to be done to finish the development of this technology. The world’s first smartphone with the under-glass fingerprint identification is the VIVO X20 Plus UD. This is the slightly enhanced variant of the original VIVO X20 Plus. Moreover, everything remains the same but the fingerprint identification process. So keep on reading the VIVO X20 Plus UD review to learn everything about this new technology and key features of this amazing handset.
VIVO X20 Plus UD Review of Design
The main difference of this handset in comparison to the original model is the lack of rear-mounted fingerprint scanner. So the overall strength of the phone has increased a lot. Moreover, if the original VIVO X20 Plus came in with various color options including the matte black, gold, and rose gold, the UD variant is available only in black.
On the front, the VIVO X20 Plus UD carries a 6.43-inch screen with a resolution of 2160 x 1080 pixels and an aspect ratio of 18:9. The display uses a Super AMOLED technology. Many have been thinking this new technology will affect the viewing performance because of an additional glass layer. But the truth is the company has been thinking about it as well and could come in with a great solution. So the screen still provides a great performance with a high precision and a wide color gamut.
When looking at the screen at 90 degrees you won’t note anything new or strange. It will look like a regular screen. But at a certain angle and through a certain amount of light you can see the embedded fingerprint identification module.
Many would like to see a front panel with no chin and forehead, but this is a large-display handset. So the existence of those parts doesn’t affect the screen proportion at all. As for the chin, it is blank and has been put there to provide a symmetrical design. But the forehead carries all the necessary sensors including the camera, speaker, proximity sensor, soft light, and so on.
Though the VIVO X20 Plus UD review showcases everything in this model is made in black, there is the second color used for details. It’s gold. The logo on the back, the ring around the camera use this color. So the phone looks amazing and brings a feeling of a top-notch smartphone.
The body is made of metal. So it’s reasonable to see a double-U-shaped antenna design with a 1.8mm distance from the edges. The ribbons have the same black coloring to provide a great look. Apart from this, the back panel uses a 3D curving for better grip.
Those who are not aware of the selling point of this device will think it lacks a fingerprint scanner. But such a design is the biggest bright spot.
To make the design part of the VIVO X20 Plus UD review complete we should say it comes with dimensions of 165.2 * 80.02 * 7.35mm and weight of 183.1g. Thus the 6.43-inch screen with an 18:9 aspect ratio was placed on a body that should carry a 5.7-inch screen with a regular 16:9 aspect ratio.
On the top, we have a microphone hole. The bottom side comes with a 3.5mm audio jack, another microphone hold, a micro USB port, and speakers. The left side carries a SIM card slot, which supports dual-card dual-standby or single-card +TF card combination. The right side only has a power button and a volume rocker.
So we can state the overall design of the VIVO X20 Plus UD is familiar to us. With the fingerprint scanner removal from the back, it has become even more luxurious.
Also Read: VIVO X20 Plus UD Unboxing
VIVO X20 Plus UD Review of Camera
There are no differences between the cameras of the regular version and this version. Thus it comes with a 12+5MP dual-camera on the back. The smaller sensor is there to provide the bokeh effect. But we are more interested in the large lens. Thanks to its own algorithms and imaging technology it is capable to output 24MP resolution images. Plus, it supports OIS.
In addition, the phone is still equipped with a VIVO Image Rubik’s Cube technology, a built-in an independent DSP image optimization chip. So taking awesome photos in any condition is not a problem anymore.
As for the front shooter, it uses another 12MP sensor with a professional DOF that is used to accurately record the depth of field information. Plus, there is a softlight.
VIVO X20 Plus UD Review of Software and Under-Display Fingerprint Technology
After many iterations of the Funtouch OS, it has also become a well-established and deeply customized Android system. The VIVO X20 Plus UD’s software runs on Android 7.1.1 and carries a version of Funtouch OS 3.2 system.
The UI style is simple and fresh. It comes with a flat design. Moreover, it provides a fluent and stable work. But there are many built-in features making the overall use quite pleasant.
The best thing we liked in the Funtouch OS 3.2 is the built-in Smart Engine 4.0, which allows users to allocate more CPU and memory resources according to different user habits. Thanks to it the software startup is way faster, while the performance is smoother. Users can set the length of time according to which the system will automatically kill the apps that are out of it. So the power consumption is controlled more smartly.
The biggest highlight of this UI is the support for under-glass fingerprint identification.
In comparison to other full-screen phones, the unlocking process of this device is more acceptable as the positive thumb operation is more convenient and natural rather than the back fingerprint solution. Plus, the phone gets stronger without an additional opening for the fingerprint scanner on the back. This will become a mainstream, undoubtedly.
As the company claims and the VIVO X20 Plus review shows, the phone uses the photoelectric reflection technology (optical fingerprint recognition). A specifically adapted to the RGB Pixel OLED screen emits light through the 0.68mm thickness of the glass cover to reach the fingers. As they have different lines, there will be different reflected lights. Therefore, the reflected light will form different ‘pictures’. This program has been developed by Synaptic.
Based on the principle of optical fingerprint technology, in order to unlock the screen, the fingerprint recognition module must be triggered first. Therefore, the fingerprint recognition mark of the screen must be ON first.
There are three ways to light the screen up and use this technology to unlock the phone – lift the phone, double-click the screen, and press the power button.
At the same time, VIVO X20 Plus UD also supports fingerprint payment.
Not all of you know the phone supports facial recognition like many other phones, and especially the iPhone X. And though this is another way to protect your data, there is a danger. Even the Face ID doesn’t work perfectly.
At last, the Funtouch OS 3.2 comes with the game-oriented VIVO Game Engine. It makes some analysis to achieve smooth gaming experience. Plus, there is ‘do not disturb’ mode.
VIVO X20 Plus UD Review of Hardware
Though many people think the VIVO X20 Plus and the UD variant are top-notch models. Maybe it doesn’t yield the true premium phones, but its hardware is not the best. We’ll try to show the advantages of this phone in the VIVO X20 Plus UD review.
This handset is packed with a Snapdragon 660 chip, which is considered to be the best offer in the super mid-range market. Actually, Qualcomm created this chip as something between the mid-range and high-end SoCs. The Snapdragon 660 is based on a 14nm process node and uses eight cores of Kryo260 CPU. It is also paired with an Adreno 512 GPU, X12 LTE modem, 4GB of RAM, and 128GB of internal storage.
The benchmark tests show quite respectable results.
In terms of gaming, the VIVO X20 Plus UD is capable of playing any game including the Honor of Kings at the high-frame mode.
This handset comes with a 3905mAh battery. The addition of the new fingerprint unlock feature didn’t affect the endurance at all. So a day use is not a problem.
When tested for the charging it took 94 minutes to charge the battery fully. 30 minutes of that time charged the phone up to 57%.
Before I started writing the VIVO X20 Plus UD review I was sure there is no real difference between the original phone and this model. This is the old good VIVO X20 Plus with an additional layer on the screen that makes it the world’s first under-display fingerprint phone. This is a real advantage in comparison to other full-screen smartphones. Because they have had to move the scanner to the back or the side, while VIVO went further and invent a new technology that will become a mainstream in the nearest future. Generally, this phone is incredible and is commendable.