OnePlus 8 5G UW (Verizon) vs Samsung Galaxy S9 vs Tecno Spark 8 Pro

Specifications score

Specifications score:

5.4/10    4.8/10    2.9/10

Specifications score for smartphones calculated as a summary of the next device components: chipset, RAM, storage, main camera, display, material, selfie camera, battery, sensors and some separated features like double SIM, sound jack, etc. It does not include network, because network compatibility mostly location-dependent. It also does not include software, because it makes very little difference which exact version of Android or iPhone runs on this device. It also does not takes in consideration brand, as brand value hard to calculate. It also ignores user ratings as user ratings are not available at the moment of smartphone release. Therefore, when choosing new gadget, those additional parameters should be considered as well.

Value for money

Value for money:	9.4/10    4.2/10    3.4/10
Value for money of smartphones calculated by dividing Specifications Score by price. The nature of this parameter is such, that cheap devices tend to have higher Value for Money than expensive ones. Therefore, it makes sense only to use this parameter while comparing devices with similar prices or similar Specification Scores.

Hardware

Chipset 5.9/10    3.7/10    2.1/10

Name:	Snapdragon 865    Exynos 9810    Helio G85
Rank:	26    67    116
Chipset (SoC or System on Chip) is the most expensive and important part of device. It commits the bigger part of smartphone's specification score and value for money. But it is usually very hard to evaluate chipset based on typical info like number of cores and clock rate. Instead, we maintain a list of chipsets used in modern smartphones sorted by all available data including benchmark tests like AnTuTu and GeekBench. (Look below).
Number of cores:	8 (1+3+4)    8 (4+4)    8 (2+6)
Number of cores is the number of microprocessors built in current chipset. Generally, the more cores the better. Number of cores defines the number of tasks that smartphone can process simultaneously. Most of the modern chipsets, both cheap and expensive have 8 cores. Also, cheap inefficient chipset can have more processors than expensive performent one. Therefore, this parameter alone is not very informative.
Max clock rate:	2840    2900    2000
Max clock rate is the maximum frequency at which microprocessor is running. One MHz, for example, means that processor makes one million cycles per second. Generally, the higher clock rate the better, but other factors should be considered as well. Some processors can perform only one action per cycle, while others can do two or more. Some chipsets have 1x3x4 architecture with one "fast" processor and seven "slow" processors, while other chipsets can have 4x4 architecture with four "fast" and four "slow" processors. Old, inefficient chipset can have higher clock rate than new efficient one. Therefore, this parameter taken separately is not very informative.
Technology process:	7 nm    10 nm    14 nm
Technology process refers to the size of transistors and the distance between two transistors on a microprocessor. The smaller this parameter the better. Meaning, that more transistors can be packed on the same square. Nanometer means one billionth (1/1000,000,000) of a meter. Currently, the most advanced microprocessors use a 5nm technology process. This parameter is very unambiguous and allows easily separate high-end devices (5-7nm) from cheap devices that use old chipsets with 14-28nm process.
CPU:	Octa-core (1x2.84 GHz Kryo 585 & 3x2.42 GHz Kryo 585 & 4x1.8 GHz Kryo 585)    Octa-core (4x2.7 GHz Mongoose M3 & 4x1.8 GHz Cortex-A55) - EMEA Octa-core (4x2.8 GHz Kryo 385 Gold & 4x1.7 GHz Kryo 385 Silver) - USA/LATAM, China    Octa-core (2x2.0 GHz Cortex-A75 & 6x1.8 GHz Cortex-A55)
Central processing unit. The most important part of a chipset. Consists of several (usually 8) microprocessors each boards millions of transistors.
GPU:	Adreno 650    Mali-G72MP18    Mali-G52 MP2
Graphic processing unit. Graphic processing unit process instructions related to graphics: rendering images, playing videos, etc.
AnTuTu benchmark score:	601283    321731    195901
AnTuTu is a Chinese software benchmark tool usually used to test smartphones performance.
GeekBench benchmark score:	946 / 3494    686 / 2018    357 / 1279
GeekBench is another benchmark tool usually used to test performance of smartphones. It separates single-core test results from multi-core tests.

RAM 4.4/10    2.2/10    3.3/10

RAM:	8 Gb    4 Gb    6 Gb
RAM (Random access memory) is a fast temporary memory. This memory is used for running apps. When a smartphone is off all information from RAM is destroyed. RAM measured in GB. One GB approximately equals 1000,000,000 bytes and can be used for storing 800,000 pages of plain text (4,000 books). Modern smartphones typically have from 1 up to 12 GB RAM. The more RAM device has the better. On the other side, if you are not a gamer, you, probably, will never need more than 4GB.
has model variants with different memory sets: Samsung Galaxy S9 has model variants with different memory sets: 4Gb 64Gb, 4Gb 128Gb Tecno Spark 8 Pro has model variants with different memory sets: 4Gb 64Gb, 4Gb 128Gb

Storage 0.3/10    2.5/10    0.6/10

Storage:	128 Gb    256 Gb    64 Gb
Storage (internal memory or hard disc) is a (relatively to RAM)slow persistent memory. This memory is used for storing data like texts, images, videos. When a smartphone is off all information from Storage is saved. Modern smartphones typically have from 16 up to 256 GB of internal memory. The more memory device has the better.

Software

Operating system:	Android 10, OxygenOS 10.0    Android 8.0 (Oreo), upgradable to Android 10, One UI 2.1    Android 11, HIOS 7.6
Some smartphone manufacturers like Xiaomi, Samsung, Huawei have developed their own operating systems. Those operating systems are Android-based and actually just provide a slightly different UI - user interface. Also, different manufacturers can have different sets of pre-installed apps.

Design

Material 8.3/10    8.3/10    3.0/10

Front:	glass    glass (gorilla glass 5)    glass
Most modern handsets have a screen made of glass. Only some foldable devices have a plastic screen.
Back:	glass (gorilla glass 5)    glass (gorilla glass 5)    plastic
Most modern cheap and budget handsets have a back panel made of plastic. More expensive devices have an aluminum back panel. High-end flagships frequently have a back panel made from glass or ceramic.
Frame:	aluminum    aluminum    plastic
Most modern cheap and budget handsets have a frame made of plastic. More expensive devices have an aluminum frame. High-end flagships frequently have a frame made of steel.

Dimensions

Length:	160.2 mm (6.31 inch)    147.7 mm (5.81 inch)    169 mm (6.65 inch)
Width:	72.9 mm (2.87 inch)    68.7 mm (2.70 inch)    76.8 mm (3.02 inch)
Thickness:	8 mm (0.31 inch)    8.5 mm (0.33 inch)    8.8 mm (0.35 inch)
On the graphic below you can see dimensions of smartphones compared one to another. If your display has PPI (pixel per inch) equals 96, the graphic below will show real sizes (except corner radius).

Weight

Weight:	180 gm (6.35 oz)    163 gm (5.75 oz)    null gm (null oz)
Modern smartphones typically have weights from 150 to 250g. (Exception is a rugged smartphone that can weight up to 400 gram.) Cheaper smartphones usually are lighter than more expensive ones, as they are built from plastic, have less memory, have fewer camera sensors, fewer sensors, and so on.

Main camera 4.2/10    4.1/10    1.3/10

Camera sensors

Number of camera sensors:	3    1    3
Modern smartphones usually have a rear camera which consists of several cameras/sensors. Why smartphone cameras need multiple sensors? It is because of the smartphone's low thickness. Smartphones are very thin and cannot have pullout lenses. Therefore each camera sensor has its fixed focal length and angle. Ultrawide sensors have a smaller focal length. Telephoto sensors have a bigger focal length. The main camera sensor usually "wide" and its focal length somewhere in between telephoto and ultrawide.
Wide:	Yes No   Yes No   Yes No
Phones usually have a wide-angle primary sensor.
Focal length:	25 mm    26 mm    --
Focal length is the distance from the focal point to the sensor. Wide-angle cameras have a focal length in a range between 22 and 30mm.
Angle of view:	69 °    67 °    --
The Angle of View (or The Field of View) is a value that describes how much of the scene will be captured by a camera shot. The maximum possible value is 180 °. Wide-angle cameras typically have Angle of View in a range between 60 and 85 °
Image resolution:	48 MP    12 MP    48 MP
Image resolution refers to the number of pixels on the photo. The more the better, but when two cameras are compared, pixel size should be considered as well. For example, a 10Mp camera with pixel size 2µm better than a 16Mp camera with a pixel of 1µm. Generally high resolution good for printing posters, but bigger pixels important when shooting in low light conditions. Because of this, cameras with high-resolution use pixel binning by default. Pixel binning means that several pixels joined in one. For example, a 48Mp camera with a pixel of 0.8µm turns into 12Mp one with 1.6 µm pixel. Today devices usually have image resolution from 5 up to 108Mp.
Pixel size:	0.8µm    1.4µm    --
Pixels are tiny dots that image consists of. For example, an image with a resolution of 12Mp roughly contains 12 million pixels. The size of pixels (or photosites) is important because the bigger the photosite the more light can be captured by the sensor. Smartphones usually have pixel size in a range between 0.7 and 2.4µm. By using binning, cameras with high resolution can create super-pixels with a 4 or even 9 ratio.
Sensor size (diagonal):	1/2.0"    1/2.55"    --
The bigger sensor the better. Meaning, the more light can go through and more quality photos can be captured. Especially in a low light condition. Sensor size is strongly related to resolution and pixel size. The larger the sensor, the higher can be the resolution and the bigger the pixel size.
Aperture (f-number):	f/1.8    f/1.5-2.4    f/1.8
Aperture, in simple words, is just a size of a hole through which light goes inside the camera. Aperture is expressed in f-numbers (f-stop numbers) and calculated as focal length divided by aperture diameter. A bigger aperture is better for shooting in low light conditions. A smaller aperture can produce more contrast pictures in daylight. The smaller the number after slash "/" the bigger the aperture. For example, an aperture with f/1.4 is bigger than an aperture with f/2.2. Smartphone devices usually have cameras with the fixed aperture in a range between f/1.4 and f/3.0.
Ultrawide:	Yes No    Yes No    Yes No
Ultrawide cameras are used for shooting utra-wide angle panoramic photos.
Focal length:	14 mm
Ultrawide angle cameras usually have the focal length in a range between 10 and 18mm.
Angle of view:	116 (ultrawide) °
Ultrawide angle cameras typically have the Angle of View in a range between 90 and 120 °
Image resolution:	16 MP
Pixel size:	--
Sensor size (diagonal):	--
Aperture (f-number):	f/2.2
Telephoto:	Yes No    Yes No    Yes No
Telephoto cameras are used for shooting photos from a big distance. They usually have up to X3 optical zoom.
Focal length:
Telephoto cameras usually have the focal length in a range between 50 and 80 mm.
Angle of view:
Telephoto cameras typically have the Angle of View in a range between 25 and 40 °
Image resolution:
Pixel size:
Sensor size (diagonal):
Aperture (f-number):
Periscope:	Yes No    Yes No    Yes No
Periscope cameras are telephoto cameras on steroids. They have lenses that placed vertically in the smartphone body, resulting in that whole camera construction shape reminds periscope. They usually have up to X10 optical zoom. Periscope camera is expensive and its presence in a smartphone is a sign of a high-end device.
Focal length:
Periscope cameras usually have the focal length in a range between 100 and 125 mm.
Angle of view:
Periscope cameras typically have the Angle of View in a range between 15 and 25 °
Image resolution:
Pixel size:
Sensor size (diagonal):
Aperture (f-number):
Macro:	Yes No    Yes No    Yes No
Macro cameras are used for shooting photos from short distance.
Focal length:	--
Angle of view:	--
Image resolution:	2 MP
Pixel size:	--
Sensor size (diagonal):	--
Aperture (f-number):	f/2.4
Monochrome:	Yes No    Yes No    Yes No
The Monochrome sensor is used to take black-white photos. Black-white photos are known to have better contrast. Some cameras actually allow saving black-white photos from monochrome sensors, while others use data from monochrome sensors to create more contrast color photos.
Focal length:
Angle of view:
Image resolution:
Pixel size:
Sensor size (diagonal):
Aperture (f-number):
Depth:	Yes No    Yes No    Yes No
The Depth sensor is the only sensor that actually is not a camera. It is not used for shooting photos, but for discovering the exact distance to the object. Knowledge of the exact distance to the object allows other cameras (primary, ultrawide, telephoto) to make better photos.
Time of Flight:	Yes No    Yes No    Yes No
Time of Flight (ToF) sensor is a kind of Depth sensor that uses infrared laser to measure the distance to the object.

Main camera features

OIS:	Yes No    Yes No    Yes No
OIS (Optical Image Stabilization) is an image stabilization technology that uses hardware -- gyroscope that stabilizes moveable camera sensor in the moment of shooting photo.
AIS:	Yes No    Yes No    Yes No
AIS (Artificial Intelligence Image Stabilization) is an image stabilization technology powered by AI.
IBIS: