# LineageOS 22.1: Android 15 Compatibility in Merely Three Months
The LineageOS team has once again shown its dedication to ensuring both older and newer Android devices remain functional by releasing **LineageOS 22.1**, which is based on **Android 15 QPR1 (Quarterly Platform Release)**. Notably, this update has come just three months post the official launch of Android 15. This achievement underscores the team’s technical skill and commitment to delivering a comprehensive custom ROM experience for over 100 devices.
## What is LineageOS?
For those unfamiliar, LineageOS is a well-known open-source custom ROM initiative that extends the functionality of Android devices by providing consistent updates, even for models that manufacturers have discontinued. It is particularly popular among technology aficionados who cherish privacy, customization, and the opportunity to utilize the most recent Android features on older hardware.
## An Unprecedented Bring-Up Cycle
As noted by Nolen Johnson, the developer relations manager for LineageOS, this has been “far-and-away the most straightforward bring-up cycle from a device perspective we’ve experienced in years.” The team credits this success to the foundational work completed while adapting Android 12 through Android 14. These prior initiatives have streamlined the integration of Android 15, allowing the connection of support to a larger assortment of devices much more rapidly.
This efficiency translates to **over 100 devices** being supported immediately, including legacy models like the **Google Pixel 2 series** and recent ones such as the **Google Pixel 9 series**. This extensive compatibility illustrates LineageOS’s goal to connect state-of-the-art software with aging hardware.
## Notable Features of LineageOS 22.1
While Android 15 itself introduces a variety of system-level enhancements, LineageOS 22.1 brings forth several singular features and updates that improve user experience:
### 1. **New System Apps: Twelve and Camelot**
– **Twelve**: This fresh music player takes the place of the outdated Eleven app, which had fallen behind modern Android standards. Twelve adopts Google’s **Material You** design principles, delivering a sleek and user-friendly interface. It also accommodates tablets, landscape orientation, and integrates with popular music server protocols like **Subsonic**, **OpenSubsonic**, and **Jellyfin**. Furthermore, Twelve features enhanced Android Auto support, superior search capabilities, and works with streaming protocols such as **HLS**, **DASH**, and **SmoothStreaming**.
– **Camelot**: A lightweight PDF viewer, Camelot addresses a significant gap left by LineageOS’s Jelly browser and WebViews, which were unable to manage PDF files. Built on Google Chrome and Files by Google, Camelot offers a straightforward yet powerful solution for PDF viewing.
### 2. **Security Improvements**
LineageOS 22.1 integrates security updates as recent as **November 2024**, ensuring devices running the ROM are safeguarded against the latest vulnerabilities. These updates have also been retroactively applied to prior LineageOS versions (19.1 through 22.1).
### 3. **Enhanced Versioning System**
LineageOS is implementing a new decimal integer versioning system to coincide with Android’s quarterly platform releases (QPRs). For instance, LineageOS 22.1 corresponds to Android 15 QPR1, and upcoming updates such as Android 15 QPR2 will transition to LineageOS 22.2. This revision simplifies the tracking of versions and guarantees alignment with Android’s update rhythm.
## Why This is Significant
The rapid embrace of Android 15 by the LineageOS team illustrates the merits of open-source development. While numerous smartphone manufacturers cease software support for their devices after a few years, LineageOS keeps them operational and effective. This is particularly crucial for users who value sustainability and aim to curtail electronic waste through extending their devices’ lifespan.
Furthermore, LineageOS’s capacity to support devices as dated as the **Pixel 2 series** highlights its inclusiveness and technical competence. For individuals with older hardware, this update offers access to the latest Android features, security fixes, and performance enhancements—services they would miss out on with official OEM updates.
## What Lies Ahead for LineageOS?
With the launch of LineageOS 22.1, the team has established a high standard for forthcoming updates. The new versioning system guarantees that users can look forward to regular updates synchronized with Android’s QPR timeline. Additionally, the roll-out of applications like Twelve and Camelot signifies that the team is not solely concentrating on system-level enhancements but also on refining the overall user experience.
For those keen on experiencing LineageOS 22.1, a comprehensive list of supported devices can be found on the [LineageOS Wiki](https://wiki.lineageos.org/devices/). Installation instructions and resources are additionally available.
