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CalyxOS

@CalyxOS

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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

Brooklyn, NY, USA
Joined September 2020
Don't wanna be here? Send us removal request.
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@CalyxOS
CalyxOS
4 years
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
CalyxOS
3 years
Soon... 🤩
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@CalyxOS
CalyxOS
11 months
Soon ™
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@CalyxOS
CalyxOS
6 months
Huge announcement ! @CalyxOS is now available for the @Moto (Motorola) G32, G42 and G52 ! Why is this a big deal ? Because it helps us further our mission of making #PrivacyByDesign available to the maximum amount of people around the world as we can.. (1/5)
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@CalyxOS
CalyxOS
3 years
Connecting a @Trezor hardware #crypto wallet to a @CalyxOS phone via WebUSB. Easy peazy using the version of Chromium included
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@CalyxOS
CalyxOS
2 years
We are super happy that the @CalyxOS community is rapidly growing, and want to make it clear what kind of community we want to foster and what kinds of behavior we discourage in the most clear way possible. CalyxOS Community Pledge :
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@CalyxOS
CalyxOS
2 years
Reduce your environmental footprint with @Fairphone and long term support combined with enhanced privacy from @CalyxOS #sustainable #impact #supplychain
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@CalyxOS
CalyxOS
2 years
Not everyone wants to try flashing an operating system on a phone. Support the continued development of @CalyxOS AND get a Pixel 4a 5G privacy phone by making a donation to @CalyxInstitute using $money or #cryptocurrency ( #btc / #eth / #ltc / #doge etc )
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@CalyxOS
CalyxOS
3 years
We have some exciting news ! CalyxOS for Pixel 5a builds are now available:
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@CalyxOS
CalyxOS
7 months
CalyxOS 5.0.2 - Android 14 is now available for the Pixel 5 series, Fold and Tablet We're also working on the Pixel 8, and porting Android 14 to the Pixel 4, 4a, and #Fairphone 4. Also will be releasing builds for several other new phones soon... 🤖
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@CalyxOS
CalyxOS
2 years
Soon ™
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@CalyxOS
CalyxOS
3 years
The Big April update ! lots of new features and bug fixes that we’ve been hard at work on over the last few months: - Introducing Datura - our new Firewall app - Global cleartext network traffic restriction toggle to prevent all non-TLS traffic from leaving the device ...1/3
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@CalyxOS
CalyxOS
2 years
New @CalyxOS 4.2.5 - Android 13 based builds for @Fairphone 4 are online at including our updated device flasher program with support for FP4 #sustainable #fair #privacy #HumanRights #InternetFreedom #FreeAndOpenSource
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@CalyxOS
CalyxOS
2 years
We started this twitter account in September of 2020 and never would have thought we'd hit >>>10,000<<< followers in such a short time ! We are really excited to share some of the announcements we'll be making in 2022 ! Thanks for supporting our mission
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@CalyxOS
CalyxOS
2 years
We just turned on #bitcoin Tips for this profile. Appreciate you. #SendTips
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@CalyxOS
CalyxOS
3 years
We're incredibly proud to announce the availability of @CalyxOS 2.0.1 which is our first stable release based on Android 11 for the Pixel 2, 3, and 4 series. Over the air updates are going out to users in dozens of countries right now! Happy new year everyone !
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@CalyxOS
CalyxOS
2 years
CalyxOS 4.3.0 - November 2022 Security update is available for all supported devices - Pixel 3 through 7, and Fairphone 4. This includes a fix for the lock screen bypass bug. For more details see (1/2)
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@CalyxOS
CalyxOS
1 year
@CalyxOS is now available for Pixel 7a
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@CalyxOS
CalyxOS
2 years
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@CalyxOS
CalyxOS
7 months
#CalyxOS 5.0.1 based on #Android 14 is now available for #Pixel 5 series and newer 🥳 in the beta update channel
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@CalyxOS
CalyxOS
2 years
We have test builds of @CalyxOS available for @Fairphone 4, and @Oneplus 8t and 9 Because if a tree falls in a forest but pixels are only sold in ~12 mostly rich western countries or so, did it make a sound? #globalsouth #access #digitaldivide
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@CalyxOS
CalyxOS
7 months
The 1st @CalyxOS based on #Android14 is available for testing. We're releasing it for Pixel 6a as that's our most popular phone & all of our developers have at least one. It’ll be available for Pixel 5 and newer next week, depending on how testing goes 🥳
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@CalyxOS
CalyxOS
9 months
Seems relevant... "A human rights activist is prosecuted under terror laws for refusing to hand over the passwords to his electronic devices during a border stop, unveiling unsettling questions about the rule of law, modern espionage and digital privacy."
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@CalyxOS
CalyxOS
2 years
Pixel 7 development is work in progress! We've received the devices, and Google has released the source code - which means we can get started on porting CalyxOS to it. You can follow progress at
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@CalyxOS
CalyxOS
3 years
This is long overdue, but there are finally signatures available for the @calyxos factory images now. ( previously we only had sha256 hashes )
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@CalyxOS
CalyxOS
3 years
@Salis Just wait
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@CalyxOS
CalyxOS
2 years
CalyxOS 3.6.0 - June 2022 Security update is now available in the beta channel for supported Pixels (i.e. 3 and newer) Updates for Fairphone and OnePlus devices will be available later.
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@CalyxOS
CalyxOS
2 years
CalyxOS 4.2.2 - Android 13 has been released as stable for the Fairphone 4, for existing users. Factory images and installation instructions will be available shortly, for new users.
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@CalyxOS
CalyxOS
3 years
One of the FAQ's we get asked all the time is, when will you have support for Pixel 5 and Pixel 4a 5G ? Well, guess what ? This is the day ! CalyxOS for Pixel 5 and Pixel 4a (5G) builds are available now:
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@CalyxOS
CalyxOS
3 years
@bigpaw01 @techloreistaken Well luckily we are handling it all for you as part of our mission to make privacy more accessible
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@CalyxOS
CalyxOS
2 years
@402PaymentReq @GrapheneOS CalyxOS is really the only mobile OS developer working on stuff like this, based on our extensive user research. This is why we built SeedVault encrypted backup & why we are the only one to have integrated Panic Button tech into the OS.
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@CalyxOS
CalyxOS
10 months
We are pleased to announce that @CalyxOS is now available for the Pixel Tablet and the Pixel Fold ! We will have some of the devices with us at our #defcon31 booth for you to see ( and maybe even get your hands on )
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@CalyxOS
CalyxOS
1 year
We are also on the fediverse at @calyxos @fosstodon .org
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@CalyxOS
CalyxOS
2 years
Issues like this are why we try to support devices for longer - Google has stopped providing updates for the Pixel 3, 3a, and just ended support for the Pixel 4 as well - however CalyxOS is still supporting them, and thus we were able to include the fix for this easily. (2/2)
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@CalyxOS
CalyxOS
2 years
A vulnerability was found and patched in the Linux kernel. This @CalyxOS build includes the fix for the #DirtyPipe vulnerability.
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@CalyxOS
CalyxOS
2 years
good thread here !
@WittyUsername30
Mitch
2 years
A few months ago, I ditched Apple and Android in favor of @CalyxOS . After using it daily while traveling, running a business, etc. I can say I highly recommend it.
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@CalyxOS
CalyxOS
2 years
We have released our Android 13 builds to beta for most devices. For more details, please see We'll continue working on fixing the issues and trying to support as many devices for as long as we can.
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@CalyxOS
CalyxOS
6 months
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@CalyxOS
CalyxOS
4 months
🧵We're excited to announce the latest update of @CalyxOS includes free/open source real time #malware and #stalkerware scanning using malware signatures from @CitizenLab from "research on targeted attacks on civil society organizations"; @AmnestyTech "investigations in.. [1/5]
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@CalyxOS
CalyxOS
6 months
Thank you to #StartSmall and @jack for believing in us, and for the funding that made this possible ! And a big thank you to our friends at @LineageAndroid for their work on platform support for the Motorola phones that helped us bring the cost of entry down so much lower ! (4/5)
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@CalyxOS
CalyxOS
3 years
-April Security update (2021-04-05) -VoLTE and Wi-Fi Calling support for many more carriers -Add caffeine, heads up, Sync, AmbientDisplay, USB Tether and AOD QS Tiles from LineageOS -Replace Google DNS with Cloudflare DNS as fallback in more places -Updates for all other apps 3/3
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@CalyxOS
CalyxOS
3 years
IMPORTANT: New update for Aurora privileged extension. We just pushed an update through the Calyx F-droid repo. Open F-droid & pull down to refresh and it should show up as an update. Fixes a bug in Aurora Store 4.0.6 which is fixed in 4.0.7, but 4.0.7 has not yet hit F-droid.
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@CalyxOS
CalyxOS
2 years
Happy to announce a test build of @CalyxOS for the #OnePlus 9 Pro is now available ! In addition to new test build updates for #Fairphone 4 and OnePlus 8T and 9 - with the May 2022 Security update. Please report any issues to the testers matrix channel.
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@CalyxOS
CalyxOS
3 years
-Sensitive Phone Numbers list: hides them from the call log -Optionally scramble the lockscreen PIN -“Background data” toggle now restricts background network access completely (even when using Wi-Fi) -SeedVault backup: can verify and re-generate the 12 word recovery code 2/3
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@CalyxOS
CalyxOS
2 years
The latest version of Chromium, 105.0.5195.124, released about 5 hours ago has been integrated into our codebase (based on Bromite) Google only has theirs rolling out at 25% now. It is available through our testing F-Droid repo, and will also be included in the next OS update.
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@CalyxOS
CalyxOS
6 months
P.S. @Moto we would love to be in touch with you and see how we can work together - please contact @nickcalyx (5/5)
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@CalyxOS
CalyxOS
2 years
Just 0.013 #BTC ( or 0.16899 #eth ) gets you a Pixel 4a (5G) with CalyxOS pre-installed on it by @CalyxInstitute staff, and your donation is tax deductible (as allowed by law)
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@CalyxOS
CalyxOS
3 years
If anyone has any problems with anything on @CalyxOS , please search our open issues queue on @gitlab to see if anybody else reported it and if not, please make a report so we can improve the over-all user experience !
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@CalyxOS
CalyxOS
3 years
CalyxOS for the @Xiaomi Mi A2 has now been updated to @Android version 11 ! #privacy #encryptionforall #metadata
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@CalyxOS
CalyxOS
2 years
CalyxOS 4.1 - Android 13 Tiramisu is now available for testing for Pixel 4 - 6a Pixel 3, 3a and Fairphone 4 are still under investigation. We will also revisit OnePlus devices after that.
@CalyxOS
CalyxOS
2 years
Soon ™
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@CalyxOS
CalyxOS
2 years
@vikrantnyc @cakewallet Just wanted to mention that you can get a Pixel 4a with 5G preinstalled with CalyxOS as a thank you gift with some @calyxinstitute memberships, and by doing so support the sustainability of the project.
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@CalyxOS
CalyxOS
3 years
If you have the interest, or know someone who might - we would love help in translating CalyxOS's user interface into #Japanese ( currently just 34% translated up from 2% ) as well as other languages including #Vietnamese (2%) and #Tamil (2%) - 🧐
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@CalyxOS
CalyxOS
3 years
We were asked how @CalyxOS is funded. The vast majority of our funding comes from individual member donations. Our memberships have benefits like hotspots with unlimited/unthrottled mobile data plans (US only) We accept #cryptocurrency also! See for info
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@CalyxOS
CalyxOS
2 years
Our release process uses a checklist to make sure nothing is missed. You can follow the progress of the June update at We're at "Build from tag", usually it would've been completed already by now but we ran into a minor issue which caused a slight delay.
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@CalyxOS
CalyxOS
2 years
@sethforprivacy @Jenny_T8 @ODELL @RebelNewsOnline Well sort of, phones can still connect to the cell towers without a SIM card for emergency call purposes. Best to always use airplane mode if that's your concern.
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@CalyxOS
CalyxOS
3 years
@MikeStroup10 @Marketsbylili Running any OS implies lots of trust and any update can be a pretty significant attack vector. At least our updates are cryptographically signed so you can't get a rogue update from a 3rd party. And the updates are good since we are pushing the monthly Google security patches.
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@CalyxOS
CalyxOS
6 months
So there is a lack of accessibility to folks in the #GlobalSouth in particular. These Motorolas cost around half of what the budget versions of Pixel phones cost and are sold in many countries in continents where Pixels are not, including in #SouthAmerica #Asia and #MENA (3/5)
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@CalyxOS
CalyxOS
6 months
Google #Pixel phones are the default and easiest phones to support while maintaining the #Android security model with a locked boot loader and full verified boot. But they are only sold in around a dozen countries around the world. And in the big picture they are not cheap (2/5)
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@CalyxOS
CalyxOS
2 years
The update is now in the stable channel, and rolling out to all supported Pixels (i.e. 3 and newer)
@CalyxOS
CalyxOS
2 years
CalyxOS 3.6.0 - June 2022 Security update is now available in the beta channel for supported Pixels (i.e. 3 and newer) Updates for Fairphone and OnePlus devices will be available later.
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@CalyxOS
CalyxOS
4 years
Hey! Would you like to help us improve @CalyxOS ? If interested in participating in user research & sharing your feedback with us, please send an email to research @calyxinstitute .org - A member of the Calyx team will contact you back to explain the study at a good time for you.
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@CalyxOS
CalyxOS
3 years
P.S. we haven't forgotten about the Xiaomi Mi A2 users, we're still working on Android 11 for that phone.. as well as working on builds for the Pixel 5 and Pixel 4a 5G
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@CalyxOS
CalyxOS
2 years
CalyxOS 3.5.1 - Location indicator and Safetynet fix just pushed to beta update channel 🚀 and should be pushed to the stable update channel later this weekend if feedback is good. More info here:
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@CalyxOS
CalyxOS
2 years
We just released a new update to the beta channel for the Pixels 4 through 6a - CalyxOS 4.2.3 It should help with the 4G / 5G / MMS issues some users were facing after the Android 13 update.
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@CalyxOS
CalyxOS
3 years
@calyxinstitute @AmonMetalHead @guyvansanden @kitchen_saint @3xdbe @DOBBELAEREW @elkevdbrandt @svengatz @Xiaomi The problem now (with respect to pinephone and librem) is we are about to start working on android 12, and they aren't
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@CalyxOS
CalyxOS
3 years
@namsardar We know it seems counter-intuitive but Pixels are arguably the most secure and most hacker-friendly phones around because they let us unlock & relock them and replace the OEM's signing key with our own. Obviously, Android is also made by Google. Also:
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@CalyxOS
CalyxOS
3 years
@matt_odell @BitcoinQ_A @inactivist_ @GrapheneOS ...ships with Yubikey 2FA and OpenPGP email support, Tor browser, Orbot, exif data scrubbing, two free VPNs run by well known and established non-profit organizations ( @calyxinstitute and @riseupnet ) so maybe it doesn't make sense to equate @CalyxOS to stock Android so much 2/2
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@CalyxOS
CalyxOS
3 years
@matt_odell @BitcoinQ_A @inactivist_ @GrapheneOS CalyxOS has a lot of privacy enhancements mostly at the application layer, like Signal integrated into the phone dialer, SeedVault encrypted backup (which we develop and is now used by Graphene and LineageOS and others) auto bluetooth shut-off (auto wifi shutoff coming soon) 1/2
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@CalyxOS
CalyxOS
3 years
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@CalyxOS
CalyxOS
3 years
@LaserHodl @SatsTonight @GrapheneOS We trust and rely on Google's @Android security team to work on the security of the OS. We are a 6 developer team. Google's much better funded and have *many* more people and more resources to test their software with. We think we have more to contribute in the area of #privacy
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@CalyxOS
CalyxOS
3 years
@BTCNuggets We think @CalyxOS and @CalyxInstitute are arguably doing some of the most innovative privacy work in the mobile space, but you should see what makes sense for you !
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@CalyxOS
CalyxOS
3 years
@RealBTCBatman Pixel 5a is a new phone model
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@CalyxOS
CalyxOS
1 year
@meastblue @GrapheneOS Hi, if @Samsung would allow bootloader unlocking of phones, and relocking / full verified boot with 3rd party signing keys, without permanently disabling parts of the hardware in the process that would be great in terms of being able to support their phones !
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@CalyxOS
CalyxOS
3 years
@BrandRev1984 @GrapheneOS Not sure there is anything that will work out of the box but it's a feature we are looking at
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@CalyxOS
CalyxOS
2 years
@ajscalia @BitcoinQ_A @sethforprivacy @Mintmobile You can also just get a preinstalled CalyxOS phone direct from
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@CalyxOS
CalyxOS
3 years
@AdamZwakk We aspire to 100% but it's hard since so many things are proprietary and not included in open source android
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@CalyxOS
CalyxOS
3 years
@sankamoto @BitcoinQ_A We have been considering shipping with crypto wallets or other tools but it would have to be free software and would be much easier for us if it was something in the F-Droid repository. So far we haven't found the right fit
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@CalyxOS
CalyxOS
2 years
@calyxinstitute @TeeL64 @LineageAndroid Which is nice because it increases interoperability, data independence and portability
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@CalyxOS
CalyxOS
3 years
You can support the development of @CalyxOS by donating to @calyxinstitute and getting a free hotspot with unlimited monthly data with no throttling or data cap ( in the US only unfortunately )
@calyxinstitute
The Calyx Institute
3 years
Yay! Thanks for letting us know. Thanks for supporting our mission with your donation
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@CalyxOS
CalyxOS
3 years
@GuddyJustus Extremely because we don't support the pixel 1
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@CalyxOS
CalyxOS
2 years
@waekYui @glennsorrentino Hi, yes it's locked bootloader and full verified boot by default
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@CalyxOS
CalyxOS
2 years
@linn135 @Fairphone you might be waiting a while... ping us when samsung allows relocking phones with 3rd party verified boot signing keys
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@CalyxOS
CalyxOS
2 years
@bitdov @BrotherRabbit_ @mamushi_io You can get phones direct from the source, @calyxinstitute
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@CalyxOS
CalyxOS
2 years
@colemaktypo @ajscalia @BitcoinQ_A @sethforprivacy @Mintmobile https;//calyxos.org/community our matrix channel has over 3500 chatters in it
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@CalyxOS
CalyxOS
3 years
@ReadABook1900a Hello! Pixel 4a is $349. It's not dirt cheap but not 'more expensive than most' either. We also support the @Xiaomi Mi A2 which is lower cost and more widely available around the world than Pixels. And we're always looking out for other low-cost options.
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@CalyxOS
CalyxOS
3 years
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@CalyxOS
CalyxOS
3 years
* #malayalam , sorry !
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@CalyxOS
CalyxOS
3 years
@GrassFedBitcoin @GrapheneOS But you've got to figure, if this industry has zero days for iOS, and seemingly endless amounts of money to buy zero days it's totally possible ...
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@CalyxOS
CalyxOS
3 years
@vikrantnyc We are working on the 6 and 6 pro, stay tuned for updates
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