Linux Operating Systems For Mobile Phones

An operating system is a software that oversees all the fundamental functions of your computer and facilitates communication between your device’s hardware and the applications it runs. It acts as an intermediary between your hardware and software. In the case of mobile devices, operating systems are responsible for managing input and output data, as well as memory allocation for all active processes. The most widely used mobile operating systems are Android and iOS, as they come pre-installed on the majority of mobile phones. Other operating systems include Windows Mobile OS, PalmOS, and Symbian OS. Despite their popularity, there are several operating systems available thanks to the open-source community. Open-source operating systems are released under open-source licenses, allowing interested parties to study, customize, and freely distribute the products for any purpose. With that in mind, the focus of today’s article is to present you with a list of the top 10 open-source operating systems available for mobile devices. If you’re seeking a fresh user interface and other features for your device, this article is for you.

What Exactly is Linux?

When individuals use operating systems like Ubuntu, Debian, Fedora, Kali Linux, and various others on their laptops, many users commonly refer to it as “using Linux.” However, this statement brings up a crucial question: Is Linux itself an operating system? The straightforward answer is NO! Linux is, in fact, a kernel and not an operating system. The kernel is considered the core component of an operating system. It acts as a middle layer between user applications and the hardware of a computer. The developers of operating systems such as Ubuntu, Fedora, and others have taken the Linux kernel and constructed additional software around it to create a Linux distribution. To simplify, think of the Linux kernel as a powerful engine that can be installed in different types of vehicles like cars, motorcycles, trucks, trains, and airplanes. While the external appearance of these vehicles may vary, they all utilize the same type of engine. In essence, Linux alone is not an operating system but rather a crucial component, the kernel, which is utilized in various operating systems that are commonly referred to as “Linux distributions.”

The Android Operating System

The Google Android operating system is built upon the foundation of the Android Open Source Project (AOSP), which itself is derived from the Linux Kernel. While AOSP is freely available and open-source, you might be aware that as an Android phone user, you often have limited control over your device. This is because phone manufacturers modify the Android OS by incorporating their own customized code and pre-installed applications, thereby restricting certain modifications. Due to these manufacturer modifications, attempting to tweak or modify certain aspects of the Android operating system may be deemed illegal. The customizations introduced by phone manufacturers are intended to provide a unique user experience and differentiate their devices in the market. However, this can also result in a lack of control for the end user, as the manufacturer’s additions and modifications may limit the extent to which users can personalize or modify their Android devices. It’s important to note that while the core Android operating system, based on AOSP, is open-source and provides a solid foundation for customization, the specific implementation on a particular Android device is subject to the modifications made by the manufacturer. This can impact the ability to make significant alterations or tweaks without potentially voiding warranties or infringing on legal restrictions set by the manufacturer. Overall, while AOSP serves as the open-source backbone for Android, the level of control and customization available to individual Android users can vary depending on the specific device and the modifications introduced by the manufacturer.

The Apple iOS

iOS has an intriguing backstory. It is built upon the foundation of NeXTSTEP, a previous operating system developed by NeXT Inc. NeXTSTEP, in turn, was based on Berkeley Unix, often known as BSD. However, it’s worth noting that Unix itself was a proprietary system that required users to pay significant license fees, often amounting to thousands of dollars. This prompted the development of Linux by Linus Torvalds, which offered a free and open-source alternative. In the case of iOS, Apple’s mobile operating system, it deviates from the open-source model. Unlike Linux, iOS is a closed-source system, meaning that the source code is not freely available for users to study, modify, or distribute. Apple maintains strict control over the iOS ecosystem, allowing them to have a comprehensive approach to the design, development, and distribution of the operating system. While iOS is not open-source, Apple has created a thriving developer community and provides various tools and resources to build applications for the platform. Developers can create apps for iOS using Apple’s proprietary development environment and programming language, ensuring compatibility and security within the iOS ecosystem. In summary, while iOS has its roots in NeXTSTEP, which itself was based on BSD, the operating system takes a departure from the open-source nature of BSD and Linux. iOS remains a closed-source system, with Apple tightly controlling the development and distribution of the operating system.

What are Linux Phones, and Do They Exist?

Based on the previous discussion, we have explored that Android OS is built upon the Linux kernel, while Apple iOS is based on Berkeley Unix. Now, you might be curious about what exactly Linux phones are. In simple terms, Linux phones refer to smartphones that operate on a Linux-based operating system, which is both free and open-source. Unlike Android phones and iPhones, which use closed-source operating systems (despite their foundation on the Linux kernel), Linux phones provide an alternative that embraces openness and flexibility. Linux phones offer users the freedom to customize and modify their devices according to their preferences, thanks to the open nature of the Linux-based operating system they run. These devices provide opportunities for users to have greater control over their smartphones and tailor the user experience to their liking. While Linux phones may not be as widely recognized or mainstream as Android phones or iPhones, they do exist, and a variety of options are available in the market. If you’re interested in exploring Linux phones, you can search for specific models that align with your requirements and preferences. Linux phones stand out from Android and iOS devices by utilizing a Linux-based operating system that is free and open-source. These devices offer users the potential for increased customization and control, providing an alternative for those seeking a different mobile experience.

Few Tips Before Buying a Linux Phone

When considering purchasing a Linux phone, it’s essential to be aware of a few tips to make an informed decision:

Consider the purpose: Linux phones may not be suitable as daily drivers, especially if you are accustomed to the applications offered by Google and Apple. These devices are often more appealing to developers and tech enthusiasts who wish to explore an alternative smartphone experience.
App availability: Keep in mind that Linux phones may not provide access to popular apps found on Android or iPhones, such as Instagram, Facebook, and Google Photos. Certain operating systems may not support these applications, so be prepared for potential limitations in app availability.
Familiarize yourself with terminal commands: To make the most out of a Linux phone, having a solid understanding of terminal commands would be beneficial. Linux-based operating systems often provide extensive customization options through the command line interface, allowing users to tweak and optimize their devices.
Exciting security features: Linux phones often boast intriguing security features, including physical kill switches for the microphone and camera. These hardware switches provide an added layer of privacy control, allowing users to physically disconnect the phone’s audio and visual capabilities.

Considering these factors, let’s now explore some of the best Linux phones available in the market, keeping in mind the characteristics mentioned above.

Best Linux Phones

Here are our top picks for the best Linux phones available, listed in random order. It’s important to carefully review their features and specifications before making a decision on which one to purchase:

1. PinePhone – Pine64

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One of the most popular Linux phones available is the PinePhone, developed by Pine64. This device offers the versatility to install various Linux phone operating systems, including UBports, Sailfish OS, Manjaro, and more. The PinePhone places a strong emphasis on security and privacy. It incorporates five physical kill switches at the back, allowing users to manually disable the microphone, Bluetooth, Wi-Fi, camera, and LTE modem as desired. Moreover, the PinePhone excels in extensibility. It features six pogo pins that enable the connection of additional devices, such as a keyboard, thermal camera, wireless charging case, and more. Repairing the phone is made easy, as the PineStore offers plenty of replaceable hardware components. Additionally, the device supports a USB hub, enabling connection to an external monitor and facilitating a desktop computer setup if desired.

Here are the key specifications of the PinePhone:

Display: 5.99 inches, 1440×720 resolution, 18:9 aspect ratio
RAM: 2 or 3 GB LPDDR3
Supported Operating Systems: Ubuntu Touch, PostMarketOS, Manjaro, Mobian, and more
Supported Graphical Interfaces: Lomiri, Phosh, Plasma Mobile, and more
Storage: 16 or 32 GB eMMC flash storage
Front Camera: 2 MP
Rear Camera: 5 MP
Removable Storage: Micro SD Card (bootable)
Sound: 3.5 mm jack, microphone, and loudspeaker
Battery: 2800 mAh and 3000 mAh (removable)
Connectivity: Wi-Fi, Bluetooth, USB-C, USB 2.0, DisplayPort
SIM: 1 Nano SIM card slot
Fingerprint Sensor: Not included, but a fingerprint module can be added using the pogo pins.

These specifications highlight the capabilities and flexibility of the PinePhone, making it a popular choice for those seeking a Linux-based smartphone experience.

2. Librem 5 – Purism

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Another remarkable Linux phone in the market is the Librem 5, manufactured by Purism. It operates on PureOS, a Linux-based operating system developed specifically for mobile devices by Purism. Notably, as of 2022, the Librem 5 was the sole smartphone recommended by the Free Software Foundation (FSF), an organization established in 1985 to advocate for the availability of free software. The Librem 5, like other products from Purism, prioritizes freedom, security, and privacy. It offers several impressive features, including:

Physical Kill Switches: The Librem 5 incorporates physical kill switches that allow users to turn off various functionalities such as the camera, microphone, and more. This provides enhanced control over privacy and security.
Easily Replaceable Parts: The phone is designed with the ability to replace parts easily, allowing for convenient repairs and maintenance.

The “5” in Librem 5 refers to the screen size, rather than indicating a specific release version. Here are the key specifications of the Librem 5:

CPU: NXP i.MX 8M Quad-core Cortex-A53, 64-bit ARM @ max 1.5GHz
Display: 5.7 inches, 720×1440 resolution
RAM: 3 GB DRAM
Supported Operating System: PureOS and Phosh
Storage: 32 GB eMMC
Front Camera: 8.0 MP
Rear Camera: 13.25 MP with LED flash
Removable Storage: Micro SD Card (up to 2 TB maximum)
Battery: 4,500 mAh (replaceable)
Connectivity: Wi-Fi, Bluetooth, USB-C, USB 2.0, DisplayPort
SIM: 1 Nano SIM card slot
Fingerprint Sensor: Not included

These specifications highlight the performance and features of the Librem 5, making it an attractive choice for those seeking a Linux-based phone that prioritizes privacy and user control.

3. Ubuntu Touch – Easiest Operating System for Android Phones

Ubuntu Touch, developed by Ubuntu, is a highly anticipated operating system that has garnered significant attention and shown remarkable progress in recent years. It provides Linux users with an alternative to Android, offering an enhanced user experience and improved native app support. With Ubuntu Touch, your smartphone can be just as functional as any mainstream device.

Ubuntu Touch

To install Ubuntu Touch, you can follow these steps:

Begin by downloading the UBports Installer from the provided link, ensuring that you select the appropriate version for your device.
Launch the installer and carefully follow the on-screen instructions that guide you through the installation process.
Connect your smartphone to your computer using a cable.
In the installer, click on “Select Device Manually” and choose your specific device from the list.
Take the opportunity to explore the different channels available and select the one that aligns with your preferences.
Click on the “Install” button and patiently wait for the installation process to complete. This typically takes around 7-8 minutes.
Once the installation finishes, you can start enjoying Ubuntu Touch on your device and take advantage of its features and capabilities.

Please note that the provided link contains a list of supported devices for Ubuntu Touch, ensuring compatibility with your particular smartphone. By following these installation steps, you can experience the Ubuntu Touch operating system firsthand.

4. LineageOS – Bug-free Operating System for Android Phones

LineageOS is indeed a highly popular choice among Linux users, known for its versatility and extensive list of supported devices. It is the successor to CyanogenMod, a well-known custom ROM. I remember installing LineageOS on a Raspberry Pi 3B+ and experiencing its seamless functionality on ARM-based devices.

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Installation

To install LineageOS, here are some general guidelines to follow:

Ensure that your device has an unlocked bootloader. It’s important to note that the installation procedure may vary for different mobile devices. Refer to the documentation specific to your device to understand the necessary steps.
Visit the provided link to access the list of supported devices for LineageOS. Choose your device from the list, and you will find an installation guide tailored to your device.

By following the installation guide specific to your device, you can successfully install LineageOS and enjoy its features and customization options. It is crucial to exercise caution and carefully follow the instructions to ensure a smooth installation process.

5. postmarketOS – Alpine-based OS for Android Phones

postmarketOS: Linux distribution focused on mobile devices | From Linux

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postmarketOS is an operating system designed to revitalize smartphones by providing longevity and security. It is built upon Alpine Linux, a lightweight and secure Linux distribution. Unlike Android, which follows a monolithic build system, postmarketOS takes a modular approach with small packages. This design promotes flexibility and adaptability. A fundamental principle of postmarketOS is to minimize device-specific components and instead focus on developing OS binaries that can be utilized on hardware with the same CPU architecture. This approach enables postmarketOS to support a wide range of devices, extending their lifespan and reducing electronic waste. By harnessing the capabilities of Alpine Linux and its modular design, postmarketOS aims to establish a sustainable and secure operating system for smartphones. It serves as an alternative to conventional mobile operating systems, allowing users to breathe new life into older devices or explore fresh possibilities with their existing smartphones.

postmarketOS is indeed a free and open-source Linux operating system specifically designed for mobile phones and tablets. It was initially released in 2017 and has since been developed based on Alpine Linux. One of its notable features is its compatibility with various Wayland and X-based user interfaces, including Plasma Mobile, Hildon, and GNOME 3. What sets postmarketOS apart from Android is its unique build system approach. Instead of using a monolithic system image for each device, postmarketOS adopts a different strategy by dividing the operating system into small package binaries. This modular design provides greater flexibility and allows postmarketOS to be used on a wide range of devices. If you’re looking for an alternative to Android and are interested in exploring a different approach to using your smartphone, postmarketOS is certainly worth considering. Its emphasis on being free, open-source, and adaptable makes it an appealing choice for those seeking a more customizable and open environment on their mobile devices.

7. Plasma Mobile

Plasma Mobile is a privacy-focused and secure phone ecosystem developed and maintained by KDE, the same organization behind the popular Plasma desktop environment. It aims to provide KDE users with a seamless convergence experience across devices, offering a visually appealing mobile version of the Plasma desktop user interface. plasmamobile-opensourcegeeks

Plasma Mobile

One of the standout aspects of Plasma Mobile is its strong emphasis on privacy and security. The development team is dedicated to creating a phone ecosystem that respects user privacy and prioritizes the safeguarding of personal data. Being an open-source project, Plasma Mobile encourages community involvement and contributions. This fosters a collaborative and innovative environment, providing developers and enthusiasts with a platform to explore and expand the possibilities of a mobile operating system. Overall, Plasma Mobile offers an appealing alternative for users who value privacy, customization, and the KDE ecosystem. It combines the strengths of the Plasma desktop interface with a focus on mobile devices, providing a unique and user-centric mobile experience.

8. GrapheneOS

GrapheneOS is an open-source, privacy-focused operating system developed as a non-profit project. It places a strong emphasis on privacy and security, aiming to provide users with a hardened version of the Android operating system. The project focuses on extensive research and development to enhance privacy and security measures. GrapheneOS incorporates significant improvements in various areas, including sandboxing, permission models, and exploit mitigations. By implementing robust security features, it strives to protect user data and enhance the overall security of the operating system.

Graphene OS

One notable advantage of GrapheneOS is its compatibility with Android apps. Users can continue using their favorite applications while benefiting from the enhanced privacy and security measures provided by GrapheneOS. Furthermore, the operating system has official support for a range of devices, including all Google Pixel devices, ensuring a seamless experience for Pixel users. For those in search of a privacy-focused and secure mobile operating system, GrapheneOS stands as a compelling choice. Its commitment to open-source development, privacy, and security aligns with the needs of users who prioritize control over their personal data and seek a robust defense against potential threats.

9. Lineage OS

LineageOS is indeed a free and open-source operating system based on Android, designed to work across a variety of devices. It places significant emphasis on several key aspects, including aesthetics, security, customization, longevity, and user control over their device. One of the standout features of LineageOS is its focus on providing a visually appealing experience for users. It aims to enhance the overall aesthetics of the user interface, ensuring an enjoyable and pleasing visual environment while using the device.

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Security is also a top priority for LineageOS. It implements measures to protect user data and privacy, offering enhanced security features and regular security updates to address potential vulnerabilities.

Customization is a significant aspect of LineageOS, allowing users to personalize their devices according to their preferences. With features like custom quick settings rules and an expanded desktop, users have the freedom to customize and tailor their device’s interface to suit their individual needs and style. Furthermore, LineageOS introduces unique features that are not available in the open-source version of Android. These features include PIN scramble, which adds an extra layer of security by scrambling the layout of the number pad, and LineageOS Trust, a framework for verifying the integrity of the operating system. If you value the flexibility and openness of the Android ecosystem and desire even more control and customization options, LineageOS provides a compelling choice. It allows users to explore the full potential of their devices and experience a higher level of personalization beyond what is typically available with stock Android.

10. PureOS

PureOS is an open-source operating system that places a strong emphasis on user privacy and security. It is based on Debian and offers a convergent experience, making it suitable for both desktop computers and mobile phones. Notably, it comes preinstalled on Librem 5 phones, which are developed by the same company. PureOS is built upon core principles of transparency, privacy, and security. It empowers users to have complete control over their data and prioritizes privacy by default. Robust security measures are implemented to protect user information and mitigate potential threats.

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The convergence aspect of PureOS allows for a seamless experience across different devices, enabling users to transition effortlessly between desktop and mobile environments. This unified interface enhances productivity and convenience. If you value transparency, privacy, and security, PureOS offers a compelling choice. Its commitment to open-source principles and focus on user control make it an attractive option for individuals who prioritize data privacy and seek an operating system that aligns with these values.

11. Sailfish OS

Sailfish OS is an independent, Linux-based mobile operating system that incorporates elements from iOS and Android. Unlike the previously mentioned options, Sailfish OS is not available for free. Initially, it was exclusively bundled with devices produced by Jolla, but due to increasing demand, it became available for separate purchase.

Sailfish OS

Sailfish OS supports Google apps and can be installed on various types of devices, including smartphones, tablets, wearables, and smart appliances. It offers a unique mobile experience that combines features from different operating systems, providing users with a distinctive interface and functionality. While Sailfish OS requires a payment to use, it offers a wide range of features and capabilities that make it an appealing choice for those seeking a different mobile experience. The OS’s flexibility and compatibility across different device types give users versatility in choosing their devices. If you are interested in investing in a distinct and independent mobile OS that combines aspects of iOS and Android while maintaining a Linux foundation, Sailfish OS might be the right choice for you.

12. Tizen OS

Tizen is an open-source operating system developed by the Linux Foundation with support from major technology companies such as Intel and Samsung. It is built on a Linux foundation and is often considered as the official Linux-based mobile operating system.

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The main focus of Tizen is to prioritize essential information and provide additional details upon user request, aiming to offer a user-friendly interface that helps users achieve their goals efficiently. If you are interested in exploring an operating system that shares similarities with Android but also has its own distinct characteristics, Tizen is definitely worth considering. Its development under the Linux Foundation and the involvement of prominent companies like Intel and Samsung provide a strong foundation for its features and functionality. By considering Tizen, you can experience an alternative mobile operating system that offers a unique approach to user interaction and presents inherent differences from Android.

13. Paranoid Android

Paranoid Android is a free custom ROM that aims to improve the visual appeal and functionality of the Android operating system. The developers of Paranoid Android actively contribute to the open-source Android community and adhere to Google’s guidelines for open-source Android projects.

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One notable feature of Paranoid Android is its custom launcher, which provides a sleek and polished look along with extensive customization options. Users can personalize their Android experience by tailoring the launcher to their preferences.

The latest version of Paranoid Android, Quartz 5, introduced several noteworthy features. These include DC Dimming, which reduces screen flickering at low brightness levels, App Lock for enhanced security, Ringer Mode Gestures for convenient control of ringer modes, and support for Xiaomi Mi devices.

By choosing Paranoid Android, users can enjoy an enhanced and visually appealing Android experience while benefiting from the active development and commitment to open-source principles by the Paranoid Android team.

14. LuneOS

LuneOS is a free and open-source mobile operating system that is based on Linux. It serves as the successor to Palm/WebOS and is developed and maintained by WebOS Ports. LuneOS is specifically designed for touchscreen devices and offers an alternative option for users seeking a unique operating system experience.

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One notable aspect of LuneOS is its implementation of a minimal Android System Image, which is created using the CyanogenMod / LineageOS-based Halium framework. This allows LuneOS to leverage the capabilities and compatibility of Android while providing a distinct user interface and experience.

If you have a keen interest in delving into the inner workings of your operating system and enjoy exploring different software environments, LuneOS provides an opportunity to do so. With LuneOS, you can have fun accomplishing your tasks and experimenting with a Linux-based mobile operating system.

15. Mobian (Debian for Mobile)

Mobian is indeed a free and open-source mobile operating system that aims to bring the power and versatility of Debian Linux to mobile phones and tablets. By leveraging the extensive software ecosystem of Debian, Mobian offers users access to a wide range of applications through its apt package manager.

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It’s important to be aware that Mobian is still in the experimental stage and is primarily designed to run on PinePhones, a specific type of smartphone. As with any experimental software, it’s advisable to approach Mobian with caution and understand that there may be limitations or issues that need to be taken into consideration.

If you are intrigued by the idea of running Debian Linux on a mobile device and are willing to embrace the experimental nature of Mobian, it can be an interesting option to explore. However, it’s essential to keep in mind the current hardware compatibility and potential challenges associated with using an experimental operating system.

Frequently Asked Questions on Replacing Android OS

#1 – Can Android be replaced with Linux on a tablet?

Compatibility of Linux-based operating systems with tablets can vary depending on the specific device, processor, and amount of RAM. It’s essential to research and ensure that the chosen operating system supports the hardware specifications of the tablet before attempting to install it. When it comes to tablets, replacing the original operating system, particularly on devices that run Android, can be more challenging compared to smartphones. Manufacturers often impose limitations and locks that make it difficult to install alternative operating systems. It’s important to carefully investigate device compatibility and any potential limitations or restrictions imposed by the manufacturer. As for Apple devices, such as iPads, it’s not possible to install Linux or Android on them due to Apple’s tight control over both the hardware and software of their devices. They do not provide official support for running alternative operating systems. If you specifically desire a Linux or Android experience, Apple devices are not suitable for that purpose.

#2 – Do we have many choices for Distros?

The ones you mentioned, including Plasma, PureOS, Mobian, Sailfish OS, postmarketOS, Kali Linux, Parrot OS, and Ubuntu Touch, are all examples of the growing interest in providing alternative operating systems for mobile phones. The increasing popularity of Linux for mobile devices can be attributed to people’s growing concerns about privacy and their desire for more control over their smartphones. Linux-based operating systems often prioritize privacy and security features, allowing users to have greater control over their personal data. As development continues and more options become available, users will have a wider range of choices when it comes to selecting a Linux-based operating system for their mobile devices. This trend reflects the evolving preferences of smartphone users who value privacy, security, and customization options.

#3 – Would I get monthly security updates?

The availability and timing of patches and updates for Linux-based mobile operating systems can indeed vary across different projects. Each project operates independently and relies on the contributions of community members who volunteer their time and expertise. The frequency and extent of updates depend on various factors, including the size of the development community, available resources, project priorities, and the level of ongoing support. Some projects may have more active communities and receive frequent updates, while others may have a smaller team and provide updates less frequently. It’s important for users to research and understand the update policies and practices of the specific Linux-based mobile operating system they are interested in. Staying informed about the project’s development and community activity can help users gauge the level of ongoing support and updates they can expect.

Conclusion

Thank you for the kind words! I’m glad you found the information helpful in exploring different operating systems for smartphones. Unfortunately, as an AI language model, I don’t have the ability to sign up for newsletters or leave comments. However, I’m here to assist you with any questions or topics you’d like to discuss regarding mobile devices or any other subject. Just let me know how I can help!