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Questions tagged [kaios]

KaiOS is a web-based mobile operating system developed by KaiOS Technologies Inc. It is forked from B2G (Boot to Gecko), an open source community-driven successor of Firefox OS which was discontinued by Mozilla in 2016.

KaiOS is a web-based mobile operating system developed by KaiOS Technologies Inc. It is forked from B2G (Boot to Gecko), an open source community-driven successor of Firefox OS which was discontinued by Mozilla in 2016. The first release was published in March 2017. A small range of mobile phones is shipped with KaiOS mainly to the US, Europe, and India. In 2018, Google invested $22M in the operating system according to TechCrunch. In 2019, KaiOS Technologies secures $50 million of Series B funding.

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Firebase Cloud Messaging - getToken() error in JS SDK

I am developing an app for KaiOS, a fork of the old Firefox OS, for which apps are based on HTML5 + JS. When compiling and running on device, Firebase Cloud Messaging stops working. I receive an error as follows. TypeError: 'applicationServerKey'…
Pat Burke
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How to share link on Facebook from own application (KaiOS feature phone)

I am trying to share a link to Facebook from own application. Below are the steps/code snippet used: On click of some media item, on click of Options menu user can select Facebook. var activity = new MozActivity({ name: "share", data: { …
Vishal Kukreja
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Event when enters app and exits from app on KaiOS

I need to do some actions when app is launched and exited on KaiOS. Do we have access to the event? Tried window load unload event, seems not triggered. Tried also react component did mount life cycle method also does not trigger on those events.
Inovramadani
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Is there any possibilty to build an application that runs virtually without being installed on the mobile phone?

I wanna build an application that runs virtually on a mobile phone which doesn't need to be installed. I want it such a way that I can run and access that virtual application with some sort of link or something. Is there any possibility to build…
G19TV
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Are websocket, playing audio in background, and storing files locally possible in KaiOS app?

I am planning to develop a chat and voice messaging app in KaiOS, but want to make sure whether these things are possible in KaiOS: web sockets in background (can receive the data when app is not opened) playing audio in background without user…
Inovramadani
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Getting Error while opening hosted KaiOS app

I have a manifest.webapp hosted at my application root (https://localhost:5001/manifest.webapp), when I open it in KaiOS simulator, I get the following error: Unable to access the app starting document https://localhost:5001/, got HTTP code…
Shishir Arora
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Date Input Focus/Edit

When focusing on input with type date the simulator brings up the Date edit dialog, but am unable to edit the value. Seem as if keystrokes are still being reported to the current DOM and not the date dialog?
Jan de Jager
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Unable to set Constraints to MediaRecorder in JavaScript for Mozilla Firefox OS (KaiOS)

I am creating a MediaRecorder app for KaiOS. I wanted to disable noiseSuppression and set several other constraints as specified here. I observed that these constraints are not being respected while I set them in my code. I still get noise…
Gaurav Deochakke
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Adding T9 text input in KaiOS

I'm trying to build a simple KaiOS app with a text input but I can only insert numbers (numbers of the phone keyboard). Is there a way to write characters (like a specific input type)? For example : if the 2 is pressed twice it prints B, or even…
julient-monisnap
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KaiOS Spatial Navigation

I have tried to add a Spatial Navigation to my apps on KaiOS, but I can't achieve it. The Page has very low information. Example, when I add the following code: function nav(move) { var next = currentIndex + move; var items =…
Valeriy Skachko
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How can I develop applications that call my self c/c++ library API in KaiOS

I know KaiOS application usually developed by html/js/css, but I develop some special functions that is not exist in the current Web API, so I develop the API of the special functions using C/C++, and now, I want to define JS API to call the C/C++…
HelloXM
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Why camera in KaiOS emulator (B2G) not working?

I want to make a QR Scan with KaiOS technologies, but that is not working in the KaiOS emulator. I'm using emulator version 2.2. But, I try on the web browser, the camera is worked.
Nyx47
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