(Image taken from Internet, hacked and deleted)
Mobile phone, full name of a mobile phone, commonly referred to as a mobile phone, was originally just a means of communication. In last century, we called it a mobile phone. It is a portable telephone terminal that can be used over a wide range. It was developed from a field mobile telephone manufactured by Bell Laboratories in USA in 1940.
In 1973, American Motorola engineer Martin Cooper invented world's first commercial mobile phone. After going through 2G era and 3G era, it has grown into 4G era followed by 5G era. There have been 5G pilot projects in China. However, we don't know much about many mobile phone terms. mobile phone encyclopedia includes mobile phone size, resolution, introduction to screen-to-body ratio, pixel density, etc. Let's learn about mobile encyclopedia together!
Size
Mobile phone screen size is divided into two concepts: physical size and screen resolution. For example, screens of two mobile phones are about same size, but one can only display two lines of Chinese characters, while other can display five lines of Chinese characters. Regardless of difference in font size, key is resolution Font size can display more lines of Chinese characters.
Permission
Indicates how many pixels monitor can display, 4K> 2K> 1080P.
3D rendering of a Wi-Fi symbol on a smartphone
Screen to Body Ratio
Indicates relative ratio of screen area to phone front area.
Pixel Density
Also called pixel density and refers to number of pixels per inch. Therefore, higher PPI value, it means that display screen can display images with a higher density. Of course, higher displayed density, higher accuracy.
Screen brightness
The screen's brightness is 504 nits, which is clearly visible in sunlight.
CPU Model
This is control center system of entire mobile phone, as well as control center of logical part. The microprocessor achieves goal of control by running software in memory and calling database in memory. According to AnTuTu performance evaluation software, performance evaluation of product is checked to evaluate performance quality of running game.
CPU frequency
CPU frequency is clock frequency of CPU. Simply put, it's short for CPU's operating frequency (the number of synchronous pulses that occur in 1 second). The unit of measure is Hz. It determines how fast your computer will run.
Number of CPU cores
That is how many cores CPU consists of. The more cores, faster CPU and higher its performance. For processing same data, a single-core CPU is equivalent to one person processing data, a dual-core CPU is equivalent to two people processing same data, and a quad-core CPU is equivalent to four people processing same data. Thus, more processor cores, more processor work, higher efficiency.
Smartphone with eBay mobile app download section
GPU model
Also known as display core, visual processor, and display chip, it is a microprocessor that specializes in image processing in personal computers, workstations, game consoles, and some mobile devices (such as tablets, smartphones). The scoring software checks current score to assess its strength.
RAM capacity/ROM capacity
Actual available capacity will be reduced and changed due to many factors: due to operation of operating system taking up a portion of memory (RAM), actual available capacity is less than marked memory capacity; Due to installation of operating system and pre-installed programs taking up a portion of flash memory (ROM), actual available storage space is less than identified amount of flash memory.
Sensor
Generally, there are two types of camera sensor components on market: CMOS sensor and CCD sensor. CMOS is divided into two types: back-illuminated and multilayer. These are two different crafts, and there is no difference between higher and lower. The advantage of a backlit flashlight is that it has good light sensitivity and good performance even in high or low light conditions. The stack type has advantage of a large photosensitive area.
Aperture
In layman's terms, smaller value, larger aperture, and larger aperture, more light sensor can analyze. This type of camera usually performs better in low light conditions such as dark nights and cloudy days.
NFC
Near Field Communication Feature, NFC is short for Near Field Communication. NFC, jointly developed by Philips and Sony, is a contactless identification and interworking technology that enables short-range wireless communication between mobile devices, consumer electronics, PCs and smart control tools.
Fast charging
After 30 minutes of normal charging, capacity exceeds 60%, which is fast charging.
Hi-Fi
Hi-Fi is an English abbreviation for High-Fidelity, which literally translates as "high fidelity". Its definition is: a reproduction sound very similar to original sound.
Three remedies
The "three protection" function means that mobile phone or camera has functions of "dustproof, shockproof and waterproof".
IP68 is highest standard for waterproof connectors. In order to rate water resistance of waterproof connectors, it mainly depends on two digits XX after IPXX. The first digitX is from 0 to 6 and highest level is 6, second digit of X is from 0 to 8. The highest level is 8.
Gravity Sensor
The gravity sensor, also known as gravity sensor, is a new type of sensor technology. It uses elastic sensing elements to make cantilever biasing devices, and elastic sensing elements are used to make energy storage springs to control electrical contacts. Converting changes into electrical signals. At present, most mid-range and high-end smartphones and tablet computers have built-in gravity sensors, such as Apple iPhone and iPad series of products and Android mobile phone series.
5G network
5G is a fifth-generation communication technology. Its main features are millimeter wave, ultra-wideband, ultra-high speed and ultra-low delay. Its peak theoretical transmission speed can reach tens of Gbps, which is hundreds of times higher than transmission speed of a 4G network. It meets ultra-high network speed requirements for 3D structured light video communication, Internet of Things, automatic driving and other services.
Face recognition
Also known as Face Recognition, Facial Recognition, Face Recognition, etc. This is a biometric-based identification method using a general-purpose camera as an identity capture device. The face image of recognition object is received in a non-contact way, and computer system completes recognition process after comparing received image with image from database. Compared with traditional identification methods such as fingerprint identification, it has characteristics of real-time, accurate, high accuracy, easy to use, high stability, difficult to counterfeit, economical and non-intrusive.
Iris recognition
Iris-based identification. The iris is an annular part between black pupil and white sclera, which contains many details such as interwoven spots, threads, crowns, stripes, crypts, etc. And once iris is formed during fetal development, it remains unchanged throughout all life. These features determine uniqueness of features of iris, and also determine uniqueness of identification.
Wireless charging
Wireless mobile phone charging, using low-power wireless charging, using electromagnetic induction, charger and electric device transmit power through magnetic field, and there is no wired connection between them, so both charger and electric device can be used untiluntil conductive contacts are exposed.
Reverse charging
It refers to process when a mobile phone is connected to other devices, it switches to a mobile power source to discharge and charge other electronic devices. At this time, mobile phone becomes a power bank. When mobile phone with reverse charge function detects that an OTG device supporting device communication is connected, mobile phone at this time outputs voltage to VBUS on USB data line and causes reverse charging.
Sync data with PC
Synchronization of data from PC is an automatic function, that is, after connecting a mobile phone to a computer, many elements are performed automatically, such as synchronizing notes, tasks, backing up contacts, etc., there is no need to search and open folder layer. layer, saving a lot of money less time.
Hall sensor
This is a magnetic field sensor based on Hall effect. Its function is a hall switch, which can make our cell phone case smart. The specific effect is to turn on bright screen and close black screen.
Gyroscope
It is also called an angular rate sensor. On a mobile phone, accelerometer by itself cannot measure or reconstruct full 3D motion. The G-sensor can only detect axial linear motion. However, gyroscope can measure rotation and deflection movements very well, so that actual movements of user can be accurately analyzed and evaluated. Then, according to action, you can perform corresponding operations on mobile phone.
AI Capture
This is a more advanced automatic scene recognition function, but compared to scene recognition on some mobile phones in past, AI shooting is more powerful than night shooting due to a more powerful algorithm. Helps to capture clear night scenes. . Although it has greatly improved over previous automatic shooting, it still has shortcomings, that is, so-called AI shooting of some mobile phones simply integrates previous software and applications, such as beauty filters and so on, into system.