Vivo is one of the pioneers of display scanners. Vivo X51 gives the feeling that the manufacturer have been developing this technology for a long time and it led it to a truly satisfactory level. This is a rare case when the scanner was almost errorless and it worked fast enough so that it could compete with good, classic scanners.
Truth be told, this is the first smartphone, which convinced me to this solution in 100%. The sensor of Vivo X51 connects good reads with speed, which goes in pair rarely. The facial recognition works nicely as well. I have no concerns towards this solution – though I remind you that a fingerprint scanner is a better protection, than an image captured by the selfie camera. The camera reacts to changes in facial hair nicely, it does not unlock the phone when our eyes are closed, and in weak lighting – it can help us with flashing the display.
The phone is fully equipped with communication interfaces. Vivo X51 supports 5G networks, it has NFC, a dual-channel Wi-Fi or Bluetooth 5.0. All connectivity modules work without any problems, just like navigation systems.
I tried GPS with a few most popular apps and I did not notice any alarming symptoms. The quality of calls is great.
However, I have major issues with the work of the proximity sensor. It works randomly. When we hold the device with our hand, it works rather appropriately, but if we just slightly move the device, the display unlocks, which might result in, for example, muting the microphone or ending a call.
It happened to me a lot, especially that I often make calls by holding the phone with my shoulder. With Vivo X51 we cannot talk this way… The voice and the text communication is handled to Google solutions, so there is nothing to be criticized. The quality of the sound during calls is good.
The multimedia speaker is rather average. There is a single one and no matter how much it tries, it will not replace stereo. What is worse, the phone does not have a minijack.
It is a pity, but fortunately Vivo adds great, or should I even say perfect (for a manufacturers set!) earphones. They are inconspicuous, but they are remarkably comfortable and they sound decently. There is a nice bass, higher tones are clear and not aggressive, vocals are reflected nicely… For earphones from a “box” – they are great. What is more, they fit perfectly to my ear, which rarely happens. They do not fall out, they are not bothering me…
I cannot remember when was the last time that I had such comfortable in-ear earphones. What is interesting, I do not know why, but these earphones have a removable USB-C adapter, thanks to which we can use them with other devices with a minijack.
I am glad, because I like them a lot. Vivo X51 in pair with its earphones work great. It has an AK4377A chip and a rather enhanced audio settings section. We can even adjust the sound to our ears capabilities, like in Samsungs.