AMOLED display and autonomy make the difference

OPPO A91, review: AMOLED display and autonomy make the difference

OPPO is no longer the newcomer, that position is held by realme. However, its journey in our territory is still short when compared to other companies. Of course, it has made good use of time and currently has a wide catalog covering different ranges. Its flagship is the OPPO Find X2 Pro, a terminal designed to compete with the high-end of more traditional manufacturers in price and performance. And, although this may be the one that captures the most looks, OPPO is also committed to the mid-range and for this period of 2020 it has presented the OPPO A91. I have spent a month using this smartphone as my primary device and I am going to tell you if this OPPO A91 has what it takes to gain a foothold in such a competitive range.

OPPO A91, design made in OPPO

OPPO A91, review: AMOLED display and autonomy make the difference

In the short time that OPPO has been in our market, it has made its design recognizable, both among those of us dedicated to analyzing devices and for those less familiar with this sector of technology. Yes, it is true that there are more than reasonable similarities with the OnePlus and realme terminals, but it is logical considering that they are part of the same business conglomerate. And, in the end, what I have said means that the OPPO A91 is very pleasing to the eye. At a quick glance it may even look like a high-end terminal. Although by holding it, it is perfectly appreciated the sector to which it is destined.

OPPO A91, review: AMOLED display and autonomy make the difference

The construction of the OPPO A91 allows it to be lightweight, at least by current standards, They are 172 grams of weight. This lightness is achieved by using plastic on the back and sides. The choice of materials does not detract from elegance and sensations. It is not as premium as other OPPO terminals, but at the same time we will not have to treat it as a relic either since the plastic gives a certain tranquility in terms of falls and blows. Although if you want to protect it entirely you can make use of the transparent TPU case that is included in the box of the OPPO A91. Of course, if you have small hands it is possible that this case adds a few extra millimeters to the 17 centimeters that this terminal has.

OPPO A91, review: AMOLED display and autonomy make the difference

Even with these dimensions, in hand it feels good. It is a comfortable terminal to hold thanks to the slight curvature that its rear has on the sides. This allows it to sit in the palm of my hand without having to force the pose to hold it properly. And, after having talked about the visual and physical sensations, it is time to be objective and review the design. Since we have started at the rear, we will continue until we reach the front. The unit that I have had to analyze is black and with a glossy finish, which allows the light to reflect when it hits, creating a rainbow. But not everything is good, This finish turns the back into a magnet for prints.

The elements that make up this rear are: a string of cameras encapsulated vertically and placed in the upper left area, a dual-tone flash parallel to these cameras and the serigraphy of the signature in the lower left area. As for the sides, the right is reserved for the lock and unlock button, while the left houses the volume keypad and the tray for two NanoSIMs in addition to a microSD. In both cases the buttons are firmly pressed and do not dance too much, in addition to responding well when pressed.. Both the USB C charging port and the microphone and speaker are located on the bottom of the OPPO A91, in addition to the surprise of a headphone port that is so scarce in 2020.

OPPO A91, review: AMOLED display and autonomy make the difference

And finally, we have reached the front of the OPPO A91. This terminal integrates a screen of good dimensions, they are 6.4 inches and has a more than decent use. Almost all the frames that surround this screen are small, not as much as in other OPPO terminals, but enough to allow a good use of the front. The only frame that separates from this trend is the lower one, it is noticeably thicker than the rest. If you have been reading and wondering where the fingerprint reader is, the answer is that it is integrated in this screen. It keeps the camera that is housed in the notch or notch of the upper frame.

Display and sound: mono speaker and a good quality display

OPPO A91, review: AMOLED display and autonomy make the difference

In the multimedia section of the OPPO A91 there is good and bad news. I’ll start with the good news: your screen. This terminal boasts a 6.4-inch AMOLED panel coated by Corning Gorilla Glass 5. As for the OPPO resolution has decided to be conservative, this screen remains in Full HD + or 2,400 x 1,080 pixels. The extra vertical pixels is given by the elongated format of the screen, the ratio being 20: 9 being concrete. As for brightness, the figure provided by OPPO is 430 nits. And, since we are giving data, the utilization ratio of this front is 90.7%. In addition, it is a flat screen and therefore we will not have accidental touches or the rainbow effect on the sides.

OPPO A91, review: AMOLED display and autonomy make the difference

After the string of data about the screen of the OPPO A91 let’s move on to what really matters, the experience. This screen is one of the best features of this terminal. Betting on AMOLED technology in the mid-range is good news for users. When consuming multimedia content the screen is perfectly done, the colors are vivid and have a correct representation. Wide viewing angles allow chromatic aberrations to be minimized. Of course, this screen comes warm from the factory and you can solve that in the screen section within the settings. Also, if you spend a lot of time with your smartphone, OPPO has included a blue light filter that can be programmed to work in different time zones.

OPPO A91, review: AMOLED display and autonomy make the difference

The only downside to this screen is the brightness, the 430 nits fall a bit short in situations where the sun hits directly. Right now we are in summer and many times I have found myself needing to put myself in the shade to be able to read a message from Telegram or WhatsApp. We have seen the good news in the multimedia section, it’s time to give you the bad news: the speaker. The sound of the OPPO A91 has an approved scratch, it is solvent in certain situations, but it is not to be enjoyed for a long period of time. The main problem is that it only has one loudspeaker and that it is 100% volume distorted as well as having a metallic sound. It is best not to exceed 70% to minimize both distortion and canned sound. My recommendation is to always use headphones with the OPPO A91.

OPPO A91, technical sheet

OPPO A91
screen 6.4-inch AMOLED screen with Full HD + resolution (2,400 x 1080 pixels)
Wide format, 20: 9 ratio
Notch or water drop shaped notch
430 nits of brightness
Contrast 1000000: 1
Use of the front 90.7% (data taken from the manufacturer’s website)
Protected by Corning Gorilla Glass 5
Main camera Quad rear camera:
– 48-megapixel main sensor with focal aperture f / 1.79
– 8 megapixel ultra wide-angle sensor with focal aperture f / 2.25
– 2-megapixel portrait photography sensor (monochrome) with focal aperture f / 2.4
– Sensor for macro photography with focal aperture f / 2.4
Video:
– Full HD at 30 frames per second
– HD at 30 frames per second
Camera passes selfies 16 megapixel sensor with focal aperture f / 2.0
Internal memory 128 GB
Extension Via micro SD cards
Processor and RAM MediaTek Helio P70 2.1GHz
GPU Mali G72 MP3
8GB of RAM
Battery 4,025 mAh with 20W VOOC 3.0 fast charge
Operating system Android 9 Pie under the ColorOS 6.1 customization layer
Connections 4G Dual, WiFi 2.4 / 5GHz 892.11 a / b / g / n / ac, Bluetooth 4.2, OTG, GPS, A-GPS, Beidou, GLONASS, USB 2.0 Type-C
SIM Dual nano SIM
Design Glass front and plastic back
Colors: Blazing Blue (dark blue), Lightening Black (black) both with glossy finish
Dimensions 160.2 x 73.3 x 7.9 mm
172 grams of weight
Featured Features Fingerprint reader under the screen, quad camera, fast charge, dual nanoSIM
Release date Available
Price 300 euros

MediaTek as the brain on the OPPO A91

The innards of the OPPO A91 are those of a mid-range terminal. The processor that OPPO has chosen for this device is the MediaTek Helio P70 that runs at 2.1GHzIt is accompanied by the Mali G72 MP3 graphics for graphics, 8GB of RAM for multitasking and 128GB of expandable storage via microSD. And with a 4,025 mAh battery that we will talk about later. They are specifications that augur a more than solvent performance for any user and situation. The problem is that this does not happen and I am clear that the culprit is the choice of the processor. Yes, I admit, I’m not a fan of MediaTek processors, but I admit that they currently don’t have much to envy Qualcomm’s Snapdragon processors in terms of raw power. What happens is that, sometimes, they impair the general performance of the terminal.

OPPO A91, review: AMOLED display and autonomy make the difference

This is the fourth OPPO terminal that passes through my hands, both the OPPO Reno and the OPPO Reno2 seem to me very great terminals, however, the Reno2 Z and the protagonist of this analysis suffer from the same: a performance that is not at the same time. height. The main problem is that slowdowns and lag are present in almost all the actions we carry out with this terminal. When switching between applications there are a couple of seconds when the screen does not show one application or the other. If we go to more specific uses such as Twitter, when it comes to moving between the different tweets there are jerks and not everything is as smooth as it should be. But it is not an isolated case, this is repeated both on Instagram, Slack, Telegram (large groups or channels), Reddit and a long etcetera of applications.

I do not rule out that it is partly a personal problem, being an extremely demanding user who is allergic to lag. A more conventional usage profile with less baggage may not be able to appreciate the few seconds it takes for the OPPO A91 to respond. Nor do I rule out that this can be solved with a software update. Although performance has surprised me the most is that When it comes to playing the GPU Mali behaves with a fluency that I did not expect. There are times when the frames drop, but it is only a couple of seconds and then everything returns to normal. There are games like Call of Duty in which it is mandatory to lower the visual quality a few points, but the reward is to be able to play fluently.

ColorOS with Android 9

OPPO A91, review: AMOLED display and autonomy make the difference

There are fewer and fewer months for this 2020 to end, but There are still releases like the OPPO A91 in which the operating system is Android 9. Yes, you have read correctly, Android 9 in the middle of 2020. The truth is that this is a problem, not only because it is unacceptable but because ColorOS with Android 10 is a radical change in terms of user experience. At least, OPPO keeps the A91 updated thanks to security patches, but we hope sooner than later an update to ColorOS 7 with Android 10. Now, this customization layer has a more than correct operation and is a cocktail of options, However, it has details that do not convince me.

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My first complaint is that, on the main screen, where we have our applications and widgets, we do not have the gesture to lower the notification curtain. Instead what this gesture does is open an application search engine, which is also present in the application drawer. I do not understand the redundancy of this and neither does it dispense with a gesture as basic as that of lowering the notification curtain, also taking into account the diagonal of this screen. My second and last complaint is that aesthetically ColorOS is very far from Android and from Europe, this design usually has a different kind of audience. Despite everything, it has interesting options such as space for games, multiple options for gestures and an application cloner.

OPPO A91, review: AMOLED display and autonomy make the difference

Screen fingerprint and face unlock on the OPPO A91

OPPO A91, review: AMOLED display and autonomy make the difference

In the biometrics section The OPPO A91 opts for the integrated screen fingerprint reader that works really well. I did not expect less from OPPO, since all the terminals that I have tried of the brand excel in this. The position in which it is placed is comfortable and allows the finger to be supported without forcing the hand posture. Once the thumb is supported, unlocking is almost instantaneous. In addition, despite being an optical reader, it is always ready for us to support our footprint, thanks to the fact that by slightly moving the terminal the area of ​​operation is illuminated. This is not the only method of unlocking, we can also use facial recognition which, in turn, also responds quickly. Of course, this is done using the front camera and therefore it is not so safe since it does not have a 3D sensor to make a map of our face.

Autonomy to forget the charger at home

OPPO A91, review: AMOLED display and autonomy make the difference

The OPPO A91’s 4,025 mAh is accompanied by a 20W VOOC 3.0 fast charge. What does it mean? That if we leave the terminal dry we would only have to wait 1 hour to have it again at 100%, a more than acceptable wait for the milliamps that this battery has. Although if we are in a hurry, in more or less 30 minutes the battery will touch 50% of charge. So with a connect for a couple of minutes, we will have autonomy for the rest of the day. Because the OPPO A91 has a surprising duration. I have gotten to make almost 8 hours of screen in a day more relaxed and not so demanding use, but putting more cane I have been close to 6 and even having played or browsing with 4G connectivity. If you are not a demanding user, you will most likely reach a day and a half or two of autonomy.

The strategy of the four cameras in the OPPO A91

When talking about the design, I commented that the back of the OPPO A91 was inhabited by a string of cameras, there are four in total. Yes, four cameras. Although this figure has a trick, because for practical purposes we only have two useful cameras or three if we are somewhat more permissive. Why? Well, because OPPO has joined the fashion of adding sensors that add in number, but not in functionality. I am talking about the macro and depth sensors present in this terminal. But this applies to the vast majority of mid-range that include monochrome sensors, sensors for low-light photography and any example you can think of.

OPPO A91, review: AMOLED display and autonomy make the difference

Having made the subject of cameras clear, let’s talk specifically about the configuration of the OPPO A91. The main sensor is 48 megapixels with focal f / 1.8, the secondary one is an 8 megapixel ultra wide angle with f / 2.25 focal length, the third is intended for portrait photography (monochrome) and has 2 megapixels with f / 2.4 focal length and the last one is a 2 megapixel macro sensor with focal length f / 2.4. Before evaluating the photographs taken with this terminal, I must talk about the camera application. OPPO has a camera app that works well, there are no crashes and the response is almost instantaneous. The biggest drawback is that the menus are not as clear as they should be and that there are items in positions that don’t make much sense. I explain. If we want to change to the ultra wide-angle sensor, we have to press its icon, located in the upper bar of the application, when the most logical thing is that it was in the bottom bar.

Day photographs

OPPO A91, review: AMOLED display and autonomy make the difference

Ultra wide angle sensor.

OPPO A91, review: AMOLED display and autonomy make the difference

Main sensor.

OPPO A91, review: AMOLED display and autonomy make the difference

Main digital zoom sensor x2.

OPPO A91, review: AMOLED display and autonomy make the difference

Main digital zoom sensor x5.

OPPO A91, review: AMOLED display and autonomy make the difference

Main sensor.

OPPO A91, review: AMOLED display and autonomy make the difference

Camera for selfies.

OPPO has really good image processing, capable of shining even in the mid-range. What happens is that you cannot do miracles with the hardware section either. It is not as good as other terminals of the firm, but at least it complies correctly in terms of colors, dynamic range and detail. Yes, the lens that comes out best stop is the main one. The resulting photographs have a good level of detail and, in general terms, they perfectly comply. If we get finicky and zoom, we realize that there are areas where they are not completely defined or that, for example, there is a certain blurring in certain textures. In addition, we can do digital zoom from the application and the most solvent is the x2, because, although it allows us to do a five-magnification, the resulting photographs will not have any details. The ultra wide-angle sensor manages to offer good daytime results, keeps colors alive and detail is present, although to a lesser extent. In addition, it does not have that fisheye effect that many of these sensors have and therefore the photography does not suffer excessive stretching at the edges. As to the camera designed for selfies, the results are average, it does not stand out for better or for worse.

Night pictures

oppo-a91-analysis-opinions-price-27

Sensor ultra gran angular.

OPPO A91, análisis: la pantalla AMOLED y la autonomía marcan la diferencia

Sensor principal.

OPPO A91, análisis: la pantalla AMOLED y la autonomía marcan la diferencia

Sensor principal x2.

OPPO A91, análisis: la pantalla AMOLED y la autonomía marcan la diferencia

Sensor principal x5.

OPPO A91, análisis: la pantalla AMOLED y la autonomía marcan la diferencia

Sensor principal.

OPPO A91, análisis: la pantalla AMOLED y la autonomía marcan la diferencia

Sensor principal con modo noche.

El OPPO A91 es un terminal de gama media y por lo tanto la noche es su talón de Aquiles. Al igual que de día, la cámara que mejor sale parada es la principal. Las fotografías resultantes tienen un nivel de detalle correcto y un ruido aceptable. Hace acto de presencia el efecto acuarela y los colores están algo lavados, pero consiguen ser salvables y lo más importante, usables. Si utilizamos el zoom digital, las imperfecciones saltan incluso con el x2, siendo el x5 casi inutilizable ya que hay una falta de detalle que salta a simple vista. Eso sí, la lente que sale peor parada en este apartado es el ultra gran angular. Las fotografías que arroja este sensor tienen muy poco detalle y definición, además de ser mucho más oscuras debido a que la focal no es tan amplia. No es algo nuevo que la fotografía nocturna esté reservada para terminales de gamas superiores, pero al menos el OPPO A91 cuenta con un modo noche que consigue transformar una foto pobre en una decente. Es obligatorio utilizar este modo, aunque tengamos que esperar los cinco segundos que tarda en hacer la foto.

Vídeo en el OPPO A91

El apartado de vídeo del OPPO A91 no es de los más completos de la gama media. Tiene las opciones básicas y esperables, de hecho, no graba ni a Full HD a 60 fotogramas por segundo y ni mucho menos a 4K. Está claro que no es un exponente en este apartado, ni tampoco un competidor digno. Los clips de vídeo que genera están en la media e incluso algo por debajo, la estabilización es pobre y hay falta de detalle. Los colores los maneja mediamente bien, pero les falta viveza y en situaciones complicadas no consigue generar un balance correcto. Todo esto que he comentado de día, porque de noche hay todavía menos detalle y el ruido hace tal acto de presencia que consigue eclipsar a todo lo demás.

OPPO A91, buenas ideas con una ejecución mejorable

OPPO A91, análisis: la pantalla AMOLED y la autonomía marcan la diferencia

La fórmula para hacer un terminal de gama media pasa por ofrecer un equilibro en todos los apartados. No hace falta que sea el mejor en ninguno, pero sí necesita ser bueno en todos. Lo que ocurre a muchos fabricantes y a este OPPO A91 es que hay dos apartados que destacan por encima del resto. Estoy hablando del diseño, pantalla y autonomía. Estas son las mejores características de este terminal. La sobriedad, elegancia y ergonomía consiguen que se asiente bien en la mano. Su panel AMOLED permite que consumir contenido multimedia sea una buena experiencia y las ocho horas de pantalla permiten que no tenga que preocuparme por el cargador. Sin embargo, en el día a día el procesador no termina de estar a la altura en cuanto a rendimiento, el software necesita urgentemente una actualización y las cámaras, siendo decentes, no tienen ningún factor diferencial. A todo esto, se suma un precio de 300 euros para el único modelo, 8GB de RAM y 128GB de almacenamiento, que pese a ser competitivo se queda en una tierra de nadie cuando lo ponemos frente a opciones de Xiaomi o realme.





Otras noticias sobre… analisis, gama media, Oppo

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