OnePlus maintains two distinct flavors of operating systems for its consumers. The global version of their phones run OxygenOS, whereas the Chinese variant comes with HydrogenOS onboard without any Google services.

OxygenOS gives users a close to stock Android (AOSP) experience with numerous handy options and customizations. The skin is not heavy or full of inconsistencies like most other Chinese OEMs (MIUI from Xiaomi or EMUI from Huawei), but it is not free from glitches either.

It may sound little weird, but OxygenOS doesn’t give users a choice to select their own alarm tone to set it as system-wide default! Allow me to rephrase, the default clock app or similar third party apps provide an option to modify alarm tone per alarm, but when creating a new alarm in the app or with Google Assistant, it will always do so with the default tone (‘Spring’), and this can be understandably annoying.

Setting per alarm custom tone on OnePlus 6

Despite it being in AOSP since Marshmallow or Nougat, for some reason there is no such option to change the alarm tone in the OOS Settings UI, even in their current Pie releases. For reference, from shell the relevant field is settings get system alarm_alert in the database.

OnePlus 6 - Change default alarm tone system-wide?
byu/sicklyboy inoneplus

Inspecting further, it looks like the issue is model agnostic, and present in all versions of OxygenOS. The initial value of the default alarm tone in /data/system/users/CURRENT_USER_NUMBER/settings_system.xml is the ‘Spring’ one, populated from /system/build.prop, and, in a nutshell, OnePlus just doesn’t make it easy to change it from the default.

One extreme solution is to remount system partition (/system) after unlocking bootloader and/or rooting and manually replace the default alarm tone audio file with the choice of your own, but the whole procedure is way hectic.

Recognized developer osm0sis came up with an elegant solution for the issue which doesn’t touch /system. The small shell script just needs to be invoked from an elevated root or ADB shell which updates the Settings database (falling back to directly changing the appropriate XML) with the user supplied choice of alarm name.

For example:

set_alarm not_a_good_alarm.ogg

P.S. If the terms like ‘ADB’ or ‘root shell’ sound alien to you, then please give this a read first.

As this solution still needs to call the content and settings commands from shell, elevated rights are mandatory. Running the script directly on the phone with a terminal emulator was broken earlier, but should now be fixed as well.

The solution works fine on every OnePlus phone running OxygenOS, even the newest OP6T running Android Pie. It is also possible to use external apps like this one or most file managers to edit the Settings database or set alarm/ring/notification tones, respectively, but those are out of scope of this article.

P.S. After writing the initial draft, we contacted osm0sis to check if everything’s technically correct. We like to thank him for his ‘mild rewording and touchups’. ?

Have you noticed the limitation before? Let us know by commenting below.

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Kingshuk De
896 Posts

I came from a mixed background of Statistics and Computer Science. My research domains included embedded computer systems, mobile computing and delay tolerant networks in post-disaster scenarios. Apart from tinkering with gadgets or building hackintosh, I like to hop on various subreddits and forums like MyDigitalLife and XDA.

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