133 facts in comparison
Oppo A71vs Oppo A9 (2020)vs Oppo A9 (2020) (128GB / 4GB RAM)
Oppo A71
Oppo A9 (2020)
Oppo A9 (2020) (128GB / 4GB RAM)
Why is Oppo A71 better than the others?
- Pixel density?
282ppivs270,270ppi - Has a removable battery?
- Weight?
137gvs195,195g - Thickness?
7.6mmvs9.1,9.1mm - Width?
73.8mmvs75.6,75.6mm - Height?
148.1mmvs163.6,163.6mm - Volume?
83.07cm³vs112.55025599999998,112.55025599999998cm³
Why is Oppo A9 (2020) better than the others?
- RAM?
8GBvs3,4GB
Why is Oppo A9 (2020) (128GB / 4GB RAM) better than the others?
Price comparison
Oppo A71
| Product | Store | Price | ||
|---|---|---|---|---|
| Original Oppo Reno 2 8GB+128GB Mobile Ph...Original Oppo Reno 2 8GB+128GB Mobile Phone Snapdragon 730G Octa Core NFC 48MP Camera VOOC 3.0 AMOLED Screen Fingerprint 5X Zoom OIS Support Google by-（Real Star Technology） (Navy Blue) | $558.11 | |||
| Oppo R17 128GB/8GB (Blue) 4G LTE 6.4" 23...Oppo R17 128GB/8GB (Blue) 4G LTE 6.4" 2340x1080 AMOLED - Factory Unlocked - GSM ONLY, NO CDMA - No Warranty in The USA | $499.00 | |||
| Oppo A71 Case, Premium Handcrafted Print...Oppo A71 Case, Premium Handcrafted Printed Designer Hard ShockProof Case Back Cover with Screen Cleaning Kit for Oppo A71 - Hanukkah 1 | $9.95 | |||
Oppo A9 (2020)
Buy used:
$178.10
| Product | Store | Price | ||
|---|---|---|---|---|
| Oppo 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) | $244.99 | |||
| Samsung 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) | $324.99 | |||
| OUKITEL C21 Unlocked Cell Phones, 64GB/4...OUKITEL C21 Unlocked Cell Phones, 64GB/4GB Helio P60 20MP Selfie Unlocked Smartphone Dual Sim Android Mobile Phones with 6.4'' FHD+ Octa Core 4000mah Face ID + Fingerprint International Version | $149.99 | |||
| Unlocked Apple iPhone SE (2020) w/ 64GB,...Unlocked Apple iPhone SE (2020) w/ 64GB, Black | $9.95 | |||
Design
The device is protected with extra seals to prevent failures caused by dust, raindrops, and water splashes.
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.
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.
The width represents the horizontal dimension of the product. We consider a smaller width better because it assures easy maneuverability.
The height represents the vertical dimension of the product. We consider a smaller height better because it assures easy maneuverability.
Volume is the quantity of three-dimensional space enclosed by the product's chassis or, in simpler terms, the space the product occupies.
Display
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.
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.
The bigger the screen size is, the better the user experience.
Damage-resistant glass (such as Corning Gorilla Glass or Asahi Dragontrail Glass) is thin, lightweight, and can withstand high levels of force.
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.
You can operate the device easily, by pressing the screen with your fingers.
Performance
1.CPU speed
4 x 1.5GHz & 4 x 1GHz (MediaTek MT6750)
4 x 2GHz & 4 x 1.8GHz (Qualcomm Snapdragon 665)
4 x 2GHz & 4 x 1.8GHz (Qualcomm Snapdragon 665)
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.
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.
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.
The internal storage 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 A71 (MediaTek MT6750)
Oppo A9 (2020) (Qualcomm Snapdragon 665)
Oppo A9 (2020) (128GB / 4GB RAM) (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
28nm (MediaTek MT6750)
11nm (Qualcomm Snapdragon 665)
11nm (Qualcomm Snapdragon 665)
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
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.
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.
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.
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.
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.
A dual-tone flash has LED lights with different color temperatures, delivering a better color balance to photos and videos.
Audio
Devices with stereo speakers deliver sound from independent channels on both left and right sides, creating a richer sound and a better experience.
With a standard mini jack socket, you can use the device with most headphones.
A built-in FM radio tuner allows you to listen to most of the live-broadcasted FM radio stations without using the internet.
More microphones result in better sound quality and enable the device to filter out background noise.
Battery
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.
The manufacturer offers a branded wireless charging kit. To charge the device, you simply put it down on its charging base.
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.
The battery is removable and can be replaced by the user if broken.
5.Has an ultra power-saving mode
Oppo A71 (Android 7.0 Nougat)
Oppo A9 (2020) (Android 9.0 Pie)
Oppo A9 (2020) (128GB / 4GB RAM) (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.
An indicator shows you when the device has low battery.
Features
The download speed is a measurement of the internet connection bandwidth, representing the maximum data transfer rate at which a device can access online content.
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.
NFC (near-field communication) allows a device to perform simple wireless transactions.
The device has a fingerprint scanner which identifies the user.
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.
Bluetooth is a wireless technology standard that allows data transfers between devices placed in close proximity, using short-wavelength, ultra-high frequency radio waves. Newer versions provide faster data transfers.
Price comparison
Oppo A71
| Product | Store | Price | ||
|---|---|---|---|---|
| Original Oppo Reno 2 8GB+128GB Mobile Ph...Original Oppo Reno 2 8GB+128GB Mobile Phone Snapdragon 730G Octa Core NFC 48MP Camera VOOC 3.0 AMOLED Screen Fingerprint 5X Zoom OIS Support Google by-（Real Star Technology） (Navy Blue) | $558.11 | |||
| Oppo R17 128GB/8GB (Blue) 4G LTE 6.4" 23...Oppo R17 128GB/8GB (Blue) 4G LTE 6.4" 2340x1080 AMOLED - Factory Unlocked - GSM ONLY, NO CDMA - No Warranty in The USA | $499.00 | |||
| Oppo A71 Case, Premium Handcrafted Print...Oppo A71 Case, Premium Handcrafted Printed Designer Hard ShockProof Case Back Cover with Screen Cleaning Kit for Oppo A71 - Hanukkah 1 | $9.95 | |||
Oppo A9 (2020)
Buy used:
$178.10
| Product | Store | Price | ||
|---|---|---|---|---|
| Oppo 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) | $244.99 | |||
| Samsung 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) | $324.99 | |||
| OUKITEL C21 Unlocked Cell Phones, 64GB/4...OUKITEL C21 Unlocked Cell Phones, 64GB/4GB Helio P60 20MP Selfie Unlocked Smartphone Dual Sim Android Mobile Phones with 6.4'' FHD+ Octa Core 4000mah Face ID + Fingerprint International Version | $149.99 | |||
| Unlocked Apple iPhone SE (2020) w/ 64GB,...Unlocked Apple iPhone SE (2020) w/ 64GB, Black | $9.95 | |||
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