Known Issues

This page documents known problems, along with workarounds if available, for the system and apps. See also the functionality tables page and the bug reporting page if necessary.



  • Dark mode for websites is disabled due to resist fingerprinting. Please do not disable RFP.
  • Refresh rate is capped to 60hz due to resist fingerprinting. Please do not disable RFP.
  • If audio/video content fails to play in private tabs navigate to about:config and change browser.privatebrowsing.forceMediaMemoryCache to false, this is however a privacy risk.
  • Mull has strict certificate revocation checks. The CA revocation servers are frequently down/blocked/inaccessible and will result in a "Secure Connection Failed" error. Navigate to about:config and change security.OCSP.require to false, this is however a security and privacy risk.
  • Mull has stripped referrers. This often breaks loading of images on websites with hotlink protection. Navigate to about:config and change network.http.referer.XOriginPolicy to 1, this is however a privacy risk.
  • Mull has WebAssembly disabled by default. This is often used for web apps. Navigate to about:config and change javascript.options.wasm to true if needed, this is however a security risk.
  • Mull has WebGL disabled by default. This is often used for games and maps. Navigate to about:config and change webgl.disabled to false if needed, this is however a privacy risk.
  • Mull has WebRTC disabled by default. This is often used for audio/video calls. Navigate to about:config and change media.peerconnection.enabled to true if needed, this is however a privacy risk.


  • F-Droid will not suggest updates for Mull if the version on the official F-Droid repo is older than the DivestOS repo.
  • F-Droid will reset its database on the second start in rare cases.
  • To use with FairEmail you must use an App Password.
  • Silence will crash if first started without a SIM-card inserted. [upstream]
  • Simple Gallery will fail to render images on select older devices. Disable 'deep zooming' in its settings to workaround.


Not Supported

  • Changing device identifiers like the IMEI is NOT supported and is illegal in many countries.
  • Encryption cannot be disabled.
  • Fonts cannot be easily added to the system.
  • Google Apps or microG or Sandboxed Play Services are NOT supported.
  • Other WebView providers such as Bromite are not currently supported. They were briefly supported in the past but caused boot issues on 15.1 for unknown reasons.
  • Remote desktop host apps like AnyDesk and TeamViewer are not supported. They rely on special system permissions enabled by vendors signing helper apps on their behalf.
  • Root is NOT supported.
  • SELinux is always enforcing and cannot be set permissive or disabled.
  • Signature spoofing is NOT supported.
  • Torrents will not be offered for downloads/updates. They don't work well on mobile and they leak IP addresses of users.


  • 16.0 and higher will warn when running an app that is not targeting Android 9.0 API for the first time.
  • 17.1 and higher will warn when running a 32-bit app for the first time on a 64-bit device. Sometimes this warning is not accurate.
  • Compiling is non-trivial and has many undocumented steps.
  • Devices using 'encryptable=footer' in their fstab will not be encrypted by default. These devices typically are unable to be encrypted on the very first boot.
  • If your device is not detected by your computer use a USB 2.0 port. If you don't have any USB 2.0 ports use a USB 2.0 hub. If that still doesn't work try another cable.
  • IMS/VoLTE may or may not work. [upstream? deblobber? carrier?]
  • Incremental updates will often fail to successfully apply on non update-engine devices. [releasetools]
  • It is strongly recommended to leave OEM unlocked enabled to allow for recovery if unbootable and locked.
  • Sensors Off toggle on 17.1/18.1 also turns off the camera and microphone.
  • SIM ToolKit is not included and may cause issues with some carriers. STK however can be installed afterwards, you can request it if you need it.
  • 'Storage Manager' is non-functional in some cases.
  • The ADB toggle in developer options has absolutely zero effect on whether or not you can use ADB in recovery.
  • The default password for Android encryption is `defaultpassword`.
  • The DivestOS recovery is automatically installed on supported devices each successful boot. If you externally change it, you must not boot the system to use it.
  • The 'enable native code debugging'/ptrace_scope toggle does nothing on devices without stacked YAMA, ie. kernels before 3.10.
  • The Updater may not show very recent updates due to the server's 2 hour cache.
  • The Updater will show the currently installed update, this is expected.
  • When sideloading a final percent of 90-94% is expected and not signs of failure.


  • Block encrypted devices will fail to shutdown from secure boot screen on 18.1. Force power off via power button to workaround.
  • Bluetooth phone calls may not work.
  • Devices with less than 2GB of RAM *will* likely out-of-memory more often than usual. [various]
  • Disabling Storage Manager is strongly recommended, it may choose to delete your files after 90 days otherwise.
  • Fingerprint readers may work inconsistently.
  • If `fastboot update` fails on identifying device you can extract the zip and `fastboot flash` each partition manually.
  • If Seedvault is set to backup to a USB flash drive and it is later plugged in, the automatically started backup may fail. If so, you must invoke the backup manually.
  • If you have banking or game apps that do not work, ensure the `Enable native code debugging` toggle is enabled in Settings > Security. Such apps use ptrace as a form of crude anti-tamper mechanism.
  • MediaProvider error toast on some boots. [permission issue?][tracking]
  • Most devices will take up to the full 12.5 minutes to acquire a GPS lock. Please test using GPSTest app with *clear* and *direct* line of sky. [deblobber][link]
  • Mull is not installed by default, only an empty shim is. F-Droid will prompt you to "update" it on first run which will install it.
  • Phone call audio is distorted sometimes until speaker phone is toggled. [deblobber?]
  • Recovery will not be updated on each boot on 14.1. [upstream]
  • The changelog link in the Updater links to the LineageOS changelog for your device. However devices Lineage no longer compiles for don't have such a page.
  • The secondary user logout button on the lockscreen will overlap the unlock icon on some devices.
  • TWRP often cannot decrypt/unlock /data.
  • Updater JSON parsing error on 14.1. [upstream?][tracking]
  • When `Private DNS` is enabled for the system, Chromium based browsers will automatically handle DNS themself bypassing the /etc/hosts based blocking function. Disable `Secure DNS` to work around.


  • Older Unity engine games will likely crash on 16.0+ due to the hardened memory allocator. A workaround is to install the 32-bit variant of the app. [Unity engine bug][tracking]
  • Select older devices running 17.1/10 or higher will fail to connect to 802.11w (optional/required) enabled Wi-Fi networks due to lack of PMF support. [hardware]
  • Special permissions of apps may be randomly reset after reboots. This is an unknown and widespread issue affecting many other operating systems.
  • 'Developer options' will crash on 15.1 due to null PDB handle. Likely fixed in late 2022-02 builds
  • Fenix based browsers such as a 'Mull' or 'Fennec F-Droid' might cause a reboot on launch. Please report your device if it does to be fixed.


Devices listed as "Tested/Reported Working" on Downloads page will not be listed here if they are fully working as expected and do not have any quirks.


  • Encryption is not supported. [upstream blobs]


  • (confirmed report) Camera is non-functional. [kernel]


  • Camera is very slow to start and sometimes won't start at all. [upstream]


  • Sensors will not work unless you have a hybrid v220k modem which requires an a10b bootloader. [firmware]


  • Bluetooth likely won't start due to missing MAC address. [hwaddrs selinux? /misc corrupt?]
  • Device will often fail on reboot and become unresponsive, requiring the battery to be pulled. [hardware]


  • NFC doesn't work. [???]
  • GPS doesn't work. [???]
  • Torch doesn't work. [???]


  • FM radio causes reboot on headphone plug event, app can be disabled as workaround. [???]


  • 18.1 ONLY: Uses the stock /vendor partition, making many of the deblobber benefits unavailable.
  • Builds before 2021/09/02 on the 11.0 bootloader/firmware will enter CrashDump mode. Hold volume up + power to exit and then use fastboot to flash a newer build. [firmware][upstream fix]


  • Second SIM non-functional. [disabled, some variants lack the necessary firmware]


  • Device powers off after sleeping for an unknown time. [???]


  • Camera is non-functional. [upstream kernel]
  • Device is extremely slow. [hardware?]
  • Relocking bootloader with an AOSP/Lineage/DivestOS recovery flashed will result in a *permanent hard brick* unless you have acquired your NvFlash recovery token! [bootloader][guide]



  • No web browsers open at all. [kernel? memory?]
  • USB MTP is likely not functioning. [SELinux?]
  • NFC is likely not functioning. [SELinux?]
  • (reported) SIM card detection issues. Likely fixed in 2021-06 build. [SELinux][report]


  • Recovery doesn't update on system update due to missing [upstream][repro script]


  • SD cards might fail to mount or format. [vold + selinux?]
  • USB ADB does not work. [FunctionFS corruption]


  • Screen artifacting when using video camera [???]


  • Not encrypted by default. [OMAP SMC limitation]
  • Camera unavailable until reboot occasionally. [ducati cma issues?]


  • /system needs to be resized to fit 17.1 or higher. [too small partition]
  • Will fail to boot on first boot. Force off once after 3 minutes. Likely fixed in 2022-01 builds. [modem subsystem service startup failure with forceencrypt]


  • Images will often fail to install via recovery. [fstab /vendor/firmware_mnt]
  • Speaker phone volume cannot be changed from maximum.
  • Phone call audio over Bluetooth inconsistently works.


  • Camera is non-functional. [upstream blobs?]
  • Encryption is not supported. [upstream device tree?]
  • GPS is non-functional. [deblobber]


  • (reported) APN persistence issues. [???]
  • (reported) SIM detection issues. [???]


  • Uses the stock /vendor partition, making many of the deblobber benefits unavailable.
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