What are roms and what are they?

ROM is often used in the circle of mobile phone customization system players, so how much do you know about ROM? Let me give you a popular science about what ROM is.

Definition of ROM

ROM is the abbreviation of ROM image (read-only memory image), which is often used in the circle of mobile phone customization system players.

The ROM in smartphone configuration refers to EEProm (electrically erasable and writable read-only memory), which is similar to a computer’s hard drive. Generally, the process of flashing a mobile phone is to image the read-only memory (ROM image) The process of writing to read-only memory (ROM).

Common ROM images include img, zip and other formats. The former is usually flashed through the data cable using the fastboot program (line flash), the latter is usually flashed from sd (card flash) using recovery mode, and the solid img The image is also called the wire flash package, and the zip image is also called the card flash package.

Because ROM image is the most common release form of customized systems, players usually use the term ROM to refer to the mobile phone’s operating system.

Domestic custom system developers often get into debates about whether their products should be called OS or UI. In order to avoid such debates and show modesty, they will call themselves ROMs. Many custom system players will also refer to custom systems as ROMs.

Because the system source code needs to be packaged to become an image, the ROM is also called a "package". Common Android system distribution ROMs

1. CyanogenMod

CyanogenMod is a modified and customized distribution based on the open source Android system. It provides some functions not provided by the official Android system or mobile phone manufacturers, such as: support for Free Lossless Audio Codec- FLAC (lossless audio compression coding) audio format music, multi-touch, running programs from SD external storage, compressed cache , extensive list of APNs, restart function, Wi-Fi wireless network support, Bluetooth, USB tethering, etc. CyanogenMod is also the first operating system to use BFS as a task manager. CyanogenMod claims to provide higher performance and more reliability than the official firmware version.

2. Smartisan OS

Smartisan OS is a deeply customized Android mobile operating system based on CyanogenMod launched by the Chinese mainland technology company Smartisan Technology. It is commonly known as Smartisan ROM[1] . It has significantly modified the Android native user interface and added a number of personalized features. The system was first announced by Luo Yonghao, the founder of Smartisan Technology, at the Smartisan Smartphone Operating System Launch Conference at the National Convention Center in Beijing on March 27, 2013.

3. IUNI OS

The earliest internal code name of IUNI OS, an Android distribution developed by Gionee, is Aurora, which means "Aurora" in English. The person in charge, Liu Shichao, said that the OS in IUNI OS mainly refers to "OUR SERVICE", and its original meaning is to provide users with unique experiences and services through a deeply customized Android operating system. This uniqueness is mainly reflected in four aspects, namely, elegant and literary design style, streamlined and light practical functions, exquisite and dynamic interactive experience, and pure and excellent service delivery.

4. MIUI

MIUI is a third-party mobile operating system of Xiaomi that is deeply optimized, customized and developed based on the Android system. It can bring domestic users more considerate Android smartphones. experience. Since the first internal beta version was released on August 16, 2010, MIUI has had 100 million enthusiast users at home and abroad, and is well-known in China, the United Kingdom, Germany, Spain, Italy, Australia, the United States, Russia, the Netherlands, Switzerland, Brazil, etc. country. MIUI is a deeply customized Android mobile operating system based on CyanogenMod. It adds a large number of design elements from Apple's iOS. The MIUI system also uses system applications that are different from the original Android, replacing the original music program, calling program, photo album program, camera program and notification bar, adding functions that were not originally available. Since MIUI has remade some of Android's system database tables and significantly modified native system applications, MIUI data and Android data are incompatible with each other, which may directly result in application incompatibility. MIUI is a customized system developed by a group of Chinese enthusiasts. It has been modified according to the needs of Chinese users. It is now in the Beta testing stage. After collecting user opinions, OTA upgrades will be provided every Friday.

The current MIUI system is developed by Xiaomi Technology. In August 2011, Xiaomi Technology released a smartphone with preloaded MIUI called Xiaomi Phone. On May 15, 2012, it released the Youth Edition Xiaomi Phone.

On August 16, 2010, the deeply customized Android mobile phone system MIUI was born and updated every Friday.

5. Flyme OS

The new Flyme OS 1.0 is an innovative work developed by Meizu for its new generation of smartphones. It embodies Meizu’s depth of smartphone user experience over the years. Discover and evolve and optimize the experience and technical strength of its previous generations of operating systems, and strive to provide Meizu mobile phones with more powerful application functions and a more excellent operating experience. Flyme OS 1.0 will provide user interaction with clearer logic and shorter operation threads, making functions clear at a glance and easy to use. System applications will also be combined with various quick operation methods to make them more intelligent and considerate. The new system UI will be completely revamped, making the interface more personalized on the basis of freshness and simplicity. The visual effects are beyond imagination. A large number of dynamic effects have been added to the operation, making the fingertips feel more realistic and the interface moves according to your heart. At the same time, Meizu’s carefully developed and actively deployed mobile phone cloud services have also begun a new round of innovation on the new system. Cloud services such as data backup, synchronization, lost mobile phone search, and location locking will be fully upgraded, and many new services such as file cloud transfer between mobile phone contacts will be provided. With comprehensive optimization of the system, Meizu mobile phones will have more powerful multimedia audio and video functions, and will be equipped with high-quality, lossless online music services.

6. TOS

TOS refers to TencentOS. On March 3, 2015, TOS selected 200 internal test experience officers from 60,000 applicants and officially started internal testing.

In terms of design style, the interface of Tencent TOS system is based on simplicity.

In terms of interface style, Tencent TOS system is based on simplicity.

In terms of pre-installed applications, the TencentOS internal beta version only has system-level applications such as weather, file management, and browsers embedded.

7. XTUI

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The overall situation of the Android system is very simple, and the simplicity penetrates into every level of the system. Classification of roms

Because of the openness of the Android system, ROMs in most cases refer to various distributions of the Android system.

Generally divided into two categories, one is the official original ROM from the mobile phone manufacturer, which is characterized by stability and has different functions depending on the manufacturer's customization;