The most eye-catching thing about vivo NEX is, of course, its near-infinite screen, which is officially claimed to have a screen-to-body ratio of 91.24%. The upper bezel is slightly wider than the left and right bezels, with an average bezel width of about 3.8mm and a bottom bezel of 6mm, second only to the iPhone X and the Oppo Find X. The design on the back of the NEX is similar to that of the X21, with a hyperboloid back and dual cameras in the vertical row. It is worth mentioning that the back cover of its black version uses a nano laser engraving process, with tens of thousands of optical refractive surfaces, which can reflect colors such as red, green and blue at different angles, presenting a "colorful black". At the same time, the thickness of the body of the NEX reaches 8mm, and the protrusion of the rear dual camera is almost negligible.
 
The reason for the thicker body is that the NEX is equipped with a lifting front camera, which is also the key to its excellent full-screen effect. The lifting lens of the NEX uses a top-of-the-line motor provided by the Japanese manufacturer Minebea, and there is almost no vibration sensation when it is lifted and lowered, so it is only used for "selfies" on a daily basis, and it is not used very frequently. And vivo claims that the lens has a 50,000 lifting life, even if it is lifted 10 times a day, it can be used for 13 or 14 years. However, the NEX does not add much protection to the lifting lens, and it can only be retracted when it is subjected to a certain amount of external force. But fortunately, the structure is relatively strong, and there are many videos on the Internet that damage the NEX lifting lens, such as smashing the desktop when the camera is extended, using the extended camera to pry open the can pull ring, etc., the structure has no obvious damage and can work normally. The known disadvantage of using a lifting lens is that the size of the camera module is limited, and the NEX only puts an 8 million pixel camera, which has poor imaging quality.
 
In order to achieve a better full-screen effect, there is another component that needs to be eliminated, which is the earpiece. For this reason, the NEX uses full-screen sound technology, which produces sound by vibrating the screen. When actually used, its experience is better than the piezoelectric ceramic technology carried by the Xiaomi MIX generation, with loud call volume and high clarity, and there will be no sound leakage on the back. However, the hand holding the NEX, as well as the ear that is close to it, can feel noticeable vibrations when answering the call. At the same time, the sound produced by the technology does not cover the full frequency band, that is, it is not suitable for playing music, only for calls. So, overall, the NEX's full-screen voice technology is highly usable for calls, but the experience is still far from that of phones with traditional handsets.
 
The NEX Ultimate Edition also adds an under-display fingerprint recognition function, which not only reduces the number of openings and makes the phone more integrated, but also makes it more futuristic. The NEX's under-display fingerprint recognition function comes from Goodix, which is currently the third generation of under-display fingerprint adopted by vivo, and the unlocking speed is improved compared to the vivo X21, but there is still a gap compared to the traditional capacitive fingerprint recognition. In addition, the accuracy and frequency of fingerprint entry under the NEX screen are much higher than that of capacitive fingerprints. Its security is not much different from the latter, and it can be used for WeChat and Alipay payment. In other aspects, the NEX adopts a Type-C data interface, retains a 3.5mm headphone jack, and does not support waterproof function.
 
The NEX has a mediocre display, with a 6.59-inch Super AMOLED display with 2316×1080 resolution and a 19.3:9 ratio. In bright light, the maximum brightness of the NEX screen can reach about 540 nits, and the screen content can be presented relatively clearly. However, the color adjustment is not very accurate and cannot be adjusted in the settings, the style is very vibrant, and the color accuracy is not up to the level of flagship phones. In addition, under closer inspection, the screen fineness of the NEX is not high, and it also has the common problem of 1080P AMOLED screen flicker. Due to the different sensitivity of different people to the screen, it is best for consumers to experience the real device offline before deciding whether to buy it.
 
In terms of performance, the NEX is equipped with a Qualcomm Snapdragon 845 processor with a RAM capacity of 8GB, which is one of the best optimized and temperature-controlled 845 models. It can maintain smooth and stable operation in the "Honor of Kings" border breakout mode, "Honkai Impact 3" high-pressure levels, and "PUBG: Exciting Battlefield", and the body temperature of the NEX is not high, running for 2 hours The maximum temperature of "PUBG: Exciting Battlefield" is about 37 degrees, and OnePlus 6, Huawei P20 Pro, iPhone X, etc. have reached more than 40 degrees. When the battery is low, the NEX will not shield the large core, reduce the brightness of the picture, etc., and with the large 4000mAh battery, it can be said to be a perfect gaming phone.
 
The NEX has a good level of photography, with the addition of AI scene recognition, the main camera is 12 million pixels, f/1.8 aperture, and the IMX363 with four-axis optical image stabilization, which is the same as the Xiaomi Mi MIX 2S, Xiaomi Mi 8 and Nut R1; The secondary camera is a 5-megapixel IMX556 with an f/2.4 aperture, which is responsible for depth of field. In practice, the NEX is stable in daylight conditions, with a stable white balance and metering, a saturated color bias, and a huge increase in latitude when shooting backlit portraits. Dynamic range and noise control in low-light conditions aren't as good as the Samsung Galaxy S9's, but they're still remarkable. In extreme low-light environments, the NEX is as detailed as the S9. In other aspects, the NEX's AI can recognize fewer scenes and is less stable, the portrait bokeh effect is average, and the night shooting ability is stronger than that of the Xiaomi Mi 8.
 
In 2019, vivo pushed Funtouch OS 4.5 based on Android 9. Although the official claims that there are many improvements in UI and operation,But the actual use experience is not much different from the previous generation,The full-screen gesture is still based on the transformation of the three major King Kong of Android,The grip of the left and right hands will cause inconvenience in the operation of the keys on the other side,Not as comfortable as the MIUI set。 There are also shortcomings in UI design, which are a bit of a mixture of iOS and Android. There are optimizations in the operating logic, but there are always some features that give the impression that they are underoptimized.
 
Thanks to its thicker body, the NEX is fitted with a 4,000mAh battery, making it one of the flagship phones with the largest battery capacity, making it stress-free for a day of heavy use. It supports its own dual-engine flash charging in charging, using the original fast charger to charge, with a maximum power of about 19W, which can be charged to about 50% in half an hour, and it takes about 1 hour and 40 minutes to fully charge. It should be reminded that the NEX is not compatible with QC fast charging, and the maximum charging power with a QC fast charger is only about 10W, and it does not support wireless charging.