Privacy focused mobile phone operating system built on top of the android open source project. Produced as part of the mission of the non-profit @calyxinstitute
Joined September 2020
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Everyone needs a phone. Not everyone wants governments and corporations tracking their every move and spying on their communications. @CalyxOS lets you have your cake and eat it too, with #PrivacybyDesign
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🔔 CalyxOS Android 16 test builds are here! You can help us find bugs and get CalyxOS ready for our official release! Join our Matrix Tester channel for full instructions, including the risks to install the test build.
calyxos.org/news/2026/05/04/…
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COMMUNITY UPDATE: this report focuses on addressing ongoing questions and concerns from our community with a detailed rundown of every development front to increase transparency. Want to help? See what you can do to help us! Full report: calyxos.org/news/2026/04/01/…
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COMMUNITY UPDATE: our February 2026 CalyxOS progress report is out. You may have seen several changes across our website, release server, and Gerrit. This post explains our latest work and what to expect next: calyxos.org/news/2026/02/24/…
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Curious about the new signing design and our progress with #CalyxOS? Come to our talk in the FOSS on Mobile devroom at #FOSDEM2026 on Saturday, Jan 31, at 13:00 in Brussels time. Chat with our speakers Aysha and Torsten if you have questions. fosdem.org/2026/schedule/eve…
ALT Image says: #FOSDEM2026, Devroom: FOSS on Mobile, Saturday, 13:00 CET. Session topic: Open-source HSM signing for AOSP projects with limited resources: Lessons from CalyxOS signing redesign.
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#FOSDEM2026 is almost here! Join the FOSS on Mobile devroom on Saturday organized by a group of custom ROM developers, OEMs, and app builders including us. Deep dive into 21 talks on the current state of AOSP, Linux on mobile, and mobile app ecosystem. fosdem.org/2026/schedule/tra…
ALT Image says: #FOSDEM2026, Saturday Devroom, FOSS on Mobile. Talks: State of FOSS on mobile, the Linux phone app ecosystem, Deep dive AOSP: Insights and statistics, and more...
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The December 2025 CalyxOS community update is here. We are in the final stage for the new signing process and moving forward with QPR2 analysis. Both are key steps to bring CalyxOS back on track. Read the full post: calyxos.org/news/2025/12/17/…
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We are sharing a progress report to bring CalyxOS back on track. You can find more information on our signing process, infrastructure, and plan to extend support for older devices. calyxos.org/news/2025/11/10/…
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We are refining our team support on each CalyxOS community channel. Here is a full rundown on where to find support from the CalyxOS team: calyxos.org/news/2025/09/30/…
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📣 we are pushing one last OTA update before the new CalyxOS release to reach as many current users as we can about the current CalyxOS hiatus and its impact. Details about this OTA update: calyxos.org/news/2025/08/27/…
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We're focusing on improving our development infrastructure, including server optimization. We're also closely monitoring the upcoming AOSP QPR1 release and its potential impact on our community while working to bring up Android 16 with all feature updates and security patches.
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More of our internal progress will be shared periodically here and as updates to our community letter: calyxos.org/news/2025/08/01/…
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📣 New Motorola devices added to the CalyxOS support list! As we are trying to support as many devices as possible with regional and price diversity, you can now run CalyxOS on Moto G 5G (2024), g34, g45, g84. Read more: calyxos.org/news/2025/05/28/…
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Security Disclosure: An AOSP security vulnerability lets third-party apps bypass external storage restrictions and access sensitive folders without permissions. CalyxOS has released a fix and is monitoring AOSP updates. Full explainer: calyxos.org/news/2025/05/21/…
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CalyxOS retweeted
6 May 2025
BREAKING: jury awards massive $167 million in punitive damages against spyware company NSO Group.
Precedent-setting win against the notorious #Pegasus spyware maker.
Congratulations to @WhatsApp on sticking this case through since 2019. Some thoughts 1/
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CalyxOS retweeted
25 Feb 2025
The secure messaging app @signalapp makes it easy to chat without sacrificing security.
If you're getting started with Signal, learn how, and if you are already a user, we help you tighten its security.
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CalyxOS retweeted
21 Feb 2025
You can use Signal without revealing your phone number to others 🛡️
Usernames let you connect privately, but many don’t know how they work. Here’s how to set one up, find others, & the privacy benefits (& limits) of this feature.
youtu.be/NXuRlvJI2N8
odysee.com/@NaomiBrockwell:4…
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Security Disclosure from the CalyxOS team: USB restriction issue on Fairphone 5 fixed in CalyxOS 6.4.1 or newer. Update now!
calyxos.org/news/2025/02/20/…
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