65points

Oppo A9 (2020)

61points

Vivo S1

Oppo A9 (2020)
Comparison winner
Vivo S1
vs
vs

144 facts in comparison

Oppo A9 (2020) vs Vivo S1

Oppo A9 (2020)
Vivo S1
65
points
Oppo A9 (2020)
61
points
Vivo S1

Why is Oppo A9 (2020) better than Vivo S1?

  • 11.11% more battery power
    ?

    5000mAhvs4500mAh
  • 2GB more RAM memory
    ?

    8GBvs6GB
  • 2.31x more megapixels (main camera)
    ?

    48MP & 8MP & 2MP & 2MPvs16 & 8 & 2MP
  • 1.88% bigger screen size
    ?

    6.5"vs6.38"
  • Has branded damage-resistant glass
    ?
  • LCD display with 3 subpixels per pixels
    ?
  • Has stereo speakers
    ?
  • Has NFC
    ?

Why is Vivo S1 better than Oppo A9 (2020)?

  • 46.3% higher pixel density
    ?

    395ppivs270ppi
  • 3.29% faster CPU speed
    ?

    2 x 2GHz & 6 x 1.95GHzvs4 x 2 & 4 x 1.8GHz
  • 2.19x higher resolution
    ?

    1080 x 2340pxvs720 x 1600px
  • 2x more megapixels (front camera)
    ?

    32MPvs16MP
  • Supports fast charging
    ?
  • 16g lighter
    ?

    179gvs195g
  • 1mm thinner
    ?

    8.1mmvs9.1mm
  • Has an OLED or AMOLED display
    ?

Price comparison

Oppo A9 (2020)

ProductStorePrice
Oppo A9 (2020) AmazonSamsung Galaxy A9 2018 (SM-A920F/DS) 6GB...Samsung Galaxy A9 2018 (SM-A920F/DS) 6GB / 128GB 6.3-inches LTE Dual SIM Factory Unlocked - International Stock No Warranty (Lemonade Blue)
Amazon logo
$369.99
Oppo A9 (2020) AmazonOppo A9 6.53 Inch Mobile Phone 4G LTE An...Oppo A9 6.53 Inch Mobile Phone 4G LTE Android 8.1 Octa Core Cellphone Back Fingerprint 16MP 3D Body 4020mAh (Green 4GB+128GB)
Amazon logo
$249.99
Oppo A9 (2020) AmazonOppo A9 6.53 Inch Mobile Phone 4G LTE An...Oppo A9 6.53 Inch Mobile Phone 4G LTE Android 8.1 Octa Core Cellphone Back Fingerprint 16MP 3D Body 4020mAh (Purple 4GB+128GB)
Amazon logo
$249.99
Oppo A9 (2020) AmazonOppo A9 6.53 Inch Mobile Phone 4G LTE An...Oppo A9 6.53 Inch Mobile Phone 4G LTE Android 8.1 Octa Core Cellphone Back Fingerprint 16MP 3D Body 4020mAh (White 4GB+128GB)
Amazon logo
$455.27
Oppo A9 (2020) AmazonOppo A9 6.53 Inch Mobile Phone 4G LTE An...Oppo A9 6.53 Inch Mobile Phone 4G LTE Android 8.1 Octa Core Cellphone Back Fingerprint 16MP 3D Body 4020mAh (Purple 6GB+128GB)
Amazon logo
$523.04
Oppo A9 (2020) aliexpress[Official Spanish version warranty] Oppo...[Official Spanish version warranty] Oppo A9 2020 - Smartphone 6.5 "HD +, 4G Dual Sim, 8 Core/ 128 GB/ 4 GB RAM
aliexpress logo
$409.00

Design

1.weather-sealed (splashproof)
Oppo A9 (2020)
Vivo S1
The device is protected with extra seals to prevent failures caused by dust, raindrops, and water splashes.
2.weight

195g

179g

We consider a lower weight better because lighter devices are more comfortable to carry. A lower weight is also an advantage for home appliances, as it makes transportation easier, and for many other types of products.
3.thickness

9.1mm

8.1mm

We consider a thinner chassis better because it makes the product more compact and portable. Thinness is a feature highlighted by many manufacturers of mobile devices, but it is essential for a wide range of products.
4.height

163.6mm

159.5mm

The height represents the vertical dimension of the product. We consider a smaller height better because it assures easy maneuverability.
5.width

75.6mm

75.2mm

The width represents the horizontal dimension of the product. We consider a smaller width better because it assures easy maneuverability.
6.volume

112.55cm³

97.15cm³

Volume is the quantity of three-dimensional space enclosed by the product's chassis or, in simpler terms, the space the product occupies.

Display

1.pixel density

270ppi

395ppi

Pixel density is a measurement of a screen's resolution, expressed as the number of pixels per inch (PPI) on the screen. A higher pixel density translates into more clarity and sharpness for the images rendered on the screen, thus improving the quality of the viewing experience.
2.resolution

720 x 1600px

1080 x 2340px

Resolution is an essential indicator of a screen's image quality, representing the maximum amount of pixels that can be shown on the screen. The resolution is given as a compound value, comprised of horizontal and vertical pixels.
3.screen size

6.5"

6.38"

The bigger the screen size is, the better the user experience.
4.has branded damage-resistant glass
Oppo A9 (2020)
Vivo S1
Damage-resistant glass (such as Corning Gorilla Glass or Asahi Dragontrail Glass) is thin, lightweight, and can withstand high levels of force.
5.LCD display with 3 subpixels per pixels
Oppo A9 (2020)
Vivo S1
The device has an LCD display with 3 subpixels per pixel, resulting in sharp and crisp images. Pixels in some displays (like AMOLED) share one subpixel to preserve space. This can result in a less crisp, slightly blurred image.
6.has an IPS screen
Oppo A9 (2020)
Vivo S1
IPS (In-Plane Switching) is a technology used for LCDs. It was designed to overcome the main limitations of conventional twisted nematic TFT displays: limited viewing angles and low-quality color reproduction. PLS (Plane-to-Line Switching) is a type of IPS screen developed by Samsung, with increased brightness and lower production costs.

Performance

1.CPU speed

4 x 2GHz & 4 x 1.8GHz (Qualcomm Snapdragon 665)

2 x 2GHz & 6 x 1.95GHz (MediaTek Helio P65)

The CPU speed indicates how many processing cycles per second can be executed by a CPU, considering all of its cores (processing units). It is calculated by adding the clock rates of each core or, in the case of multi-core processors employing different microarchitectures, of each group of cores.
2.RAM

8GB

6GB

Random-access memory (RAM) is a form of volatile memory used to store working data and machine code currently in use. It is a quick-access, temporary virtual storage that can be read and changed in any order, thus enabling fast data processing.
3.has an external memory slot
Oppo A9 (2020)
Vivo S1
The device has a standard memory slot (such as an SD or micro SD card slot) that enables you to extend the built-in internal storage with affordable memory modules, or easily retrieve data, such as photographs, from the memory card.
4.internal storage

128GB

128GB

The internal storage, also called read-only memory (ROM), refers to the built-in storage space available in a device for system data, apps, and user-generated data. With a large amount of internal storage, you can save more files and apps on your device.
5.Has integrated LTE
Oppo A9 (2020) (Qualcomm Snapdragon 665)
The system on a chip (SoC) has an integrated LTE cellular chip. LTE is capable of downloading at faster speeds than older, 3G technology.
6.semiconductor size
Small semiconductors provide better performance and reduced power consumption. Chipsets with a higher number of transistors, semiconductor components of electronic devices, offer more computational power. A small form factor allows more transistors to fit on a chip, therefore increasing its performance.

Cameras

1.megapixels (main camera)

48MP & 8MP & 2MP & 2MP

16MP & 8MP & 2MP

The number of megapixels determines the resolution of the images captured with the main camera. A higher megapixel count means that the camera is capable of capturing more details. However, the megapixel count is not the only important element determining the quality of an image.
2.megapixels (front camera)

16MP

32MP

The number of megapixels determines the resolution of the images captured with the front camera. A higher megapixel count means that the front camera is capable of capturing more details, an essential factor for taking high-resolution selfies.
3.has built-in optical image stabilization
Oppo A9 (2020)
Vivo S1
Optical image stabilization uses gyroscopic sensors to detect the vibrations of the camera. The lens adjusts the optical path accordingly, ensuring that any type of motion blur is corrected before the sensor captures the image.
4.video recording (main camera)

2160 x 30fps

2160 x 30fps

The maximum resolution available for videos shot with the main camera. Although it may be possible to choose among other frame rates, those recordings usually have lower resolutions.
5.wide aperture (main camera)

f/1.8 & f/2.25 & f/2.4 & f/2.4

f/1.8 & f/2.2 & f/2.4

With a wider aperture the sensor can capture more light, helping to avoid blur by enabling a faster shutter speed. It also provides a shallow depth of field, allowing you to blur the background to focus attention on the subject.
6.Has a dual-tone LED flash
Oppo A9 (2020)
Vivo S1
A dual-tone flash has LED lights with different color temperatures, delivering a better color balance to photos and videos.

Audio

1.has stereo speakers
Oppo A9 (2020)
Vivo S1
Devices with stereo speakers deliver sound from independent channels on both left and right sides, creating a richer sound and a better experience.
2.has a socket for a 3.5 mm audio jack
Oppo A9 (2020)
Vivo S1
With a standard mini jack socket, you can use the device with most headphones.
3.Has a radio
Oppo A9 (2020)
Vivo S1
A built-in FM radio tuner allows you to listen to most of the live-broadcasted FM radio stations without using the internet.
4.number of microphones

2

2

More microphones result in better sound quality and enable the device to filter out background noise.

Battery

1.battery power

5000mAh

4500mAh

Battery power, or battery capacity, represents the amount of electrical energy that a battery can store. More battery power can be an indication of longer battery life.
2.has a removable battery
Oppo A9 (2020)
Vivo S1
The battery is removable and can be replaced by the user if broken.
3.has wireless charging
Oppo A9 (2020)
Vivo S1
The manufacturer offers a branded wireless charging kit. To charge the device, you simply put it down on its charging base.
4.Supports fast charging
Oppo A9 (2020)
Vivo S1
Fast charging technologies, like Qualcomm’s Quick Charge or MediaTek’s Pump Express, are used to reduce the time it takes to charge a device. For example, with Quick Charge 3.0, the battery can be charged to 50% in just 30 minutes.
5.Has an ultra power-saving mode
Oppo A9 (2020) (Android 9.0 Pie)
Vivo S1 (Android 9.0 Pie)
The ultra power-saving mode, also called low power mode, is an effective way to extend the battery life of the device. Usually, it involves limiting screen brightness and contrast, disabling location services, restricting connectivity, and turning off nonessential apps.
6.has a battery level indicator
Oppo A9 (2020)
Vivo S1
An indicator shows you when the device has low battery.

Features

1.supports Wi-Fi 5 (802.11ac)
Oppo A9 (2020)
Vivo S1
802.11ac wireless works on the 5GHz frequency range. It offers higher transfer rates, improved reliability, and improved power consumption. It provides advantages for gaming and HD video streaming.
2.has NFC
Oppo A9 (2020)
Vivo S1
NFC (near-field communication) allows a device to perform simple wireless transactions.
3.Has a fingerprint scanner
Oppo A9 (2020)
Vivo S1
The device has a fingerprint scanner which identifies the user.
4.is DLNA-certified
Oppo A9 (2020)
Vivo S1
All DLNA-certified products are compatible with one another. When different devices are connected to the same network, data can be transferred easily between them.
5.upload speed

100MBits/s

50MBits/s

The upload speed is a measurement of the internet connection bandwidth, representing the maximum data transfer rate at which a device can send information to a server or another device.
6.supports two SIM cards
Oppo A9 (2020)
Vivo S1
A dual-SIM mobile phone can work with two SIM cards at the same time.

Price comparison

Oppo A9 (2020)

ProductStorePrice
Oppo A9 (2020) AmazonSamsung Galaxy A9 2018 (SM-A920F/DS) 6GB...Samsung Galaxy A9 2018 (SM-A920F/DS) 6GB / 128GB 6.3-inches LTE Dual SIM Factory Unlocked - International Stock No Warranty (Lemonade Blue)
Amazon logo
$369.99
Oppo A9 (2020) AmazonOppo A9 6.53 Inch Mobile Phone 4G LTE An...Oppo A9 6.53 Inch Mobile Phone 4G LTE Android 8.1 Octa Core Cellphone Back Fingerprint 16MP 3D Body 4020mAh (Green 4GB+128GB)
Amazon logo
$249.99
Oppo A9 (2020) AmazonOppo A9 6.53 Inch Mobile Phone 4G LTE An...Oppo A9 6.53 Inch Mobile Phone 4G LTE Android 8.1 Octa Core Cellphone Back Fingerprint 16MP 3D Body 4020mAh (Purple 4GB+128GB)
Amazon logo
$249.99
Oppo A9 (2020) AmazonOppo A9 6.53 Inch Mobile Phone 4G LTE An...Oppo A9 6.53 Inch Mobile Phone 4G LTE Android 8.1 Octa Core Cellphone Back Fingerprint 16MP 3D Body 4020mAh (White 4GB+128GB)
Amazon logo
$455.27
Oppo A9 (2020) AmazonOppo A9 6.53 Inch Mobile Phone 4G LTE An...Oppo A9 6.53 Inch Mobile Phone 4G LTE Android 8.1 Octa Core Cellphone Back Fingerprint 16MP 3D Body 4020mAh (Purple 6GB+128GB)
Amazon logo
$523.04
Oppo A9 (2020) aliexpress[Official Spanish version warranty] Oppo...[Official Spanish version warranty] Oppo A9 2020 - Smartphone 6.5 "HD +, 4G Dual Sim, 8 Core/ 128 GB/ 4 GB RAM
aliexpress logo
$409.00

Which are the best smartphones?

Show all
This page is currently only available in English.