# KaiOS.dev > Build modern experiences on KaiOS mobile phones - [Posts](https://kaios.dev/posts/): - [FAQ](https://kaios.dev/faq/): KaiOS FAQs - [About KaiOS.dev](https://kaios.dev/about/): A blog dedicated to the KaiOS ecosystem - [Privacy Policy](https://kaios.dev/privacy/): Privacy Policy ## Posts - [JScalated: From the browser to ADB on KaiOS 3.1](https://kaios.dev/2026/06/jscalated-from-the-browser-to-adb-on-kaios-3.1/): A detailed guide to authorizing ADB on your KaiOS 3.1 phone - [A closer look at the TCL Go Flip 4 5G and KaiOS 4.0](https://kaios.dev/2026/03/a-closer-look-at-the-tcl-go-flip-4-5g-and-kaios-4.0/): Exploring and revisiting security and privacy on KaiOS 4.0 and the TCL Go Flip 4 5G - [Announcing kaios-types: KaiOS TypeScript Declarations](https://kaios.dev/2025/11/announcing-kaios-types-kaios-typescript-declarations/): The kaios-types library includes TypeScript declarations for many proprietary KaiOS APIs and extensions - [Deep Dive on Cloud Phone User Agents](https://kaios.dev/2025/06/deep-dive-on-cloud-phone-user-agents/): Analyzing hundreds of Cloud Phone user agent headers - [An In-Depth Look At KaiOS Smart Touch](https://kaios.dev/2025/01/an-in-depth-look-at-kaios-smart-touch/): KaiOS Smart Touch: The Android Competitor Killed Before It Hit The Market - [What's coming in KaiOS 4.0?](https://kaios.dev/2024/12/whats-coming-in-kaios-4.0/): Speculation about 4.0, the new major version of KaiOS - [The Definitive Guide to Publishing KaiOS Apps on the JioStore](https://kaios.dev/2024/11/the-definitive-guide-to-publishing-kaios-apps-on-the-jiostore/): Everything you need to know to publish KaiOS apps on the JioStore - [What APIs are supported on CloudMosa's Cloud Phone?](https://kaios.dev/2024/08/what-apis-are-supported-on-cloudmosas-cloud-phone/): A look at which Web APIs are available on Cloud Phone by CloudMosa - [A Developer's Introduction to CloudMosa's Cloud Phone](https://kaios.dev/2024/06/a-developers-introduction-to-cloudmosas-cloud-phone/): Everything you need to know to develop widgets for CloudModa's Cloud Phone - [KaiOS System Properties](https://kaios.dev/2024/03/kaios-system-properties/): Reading and writing system properties on KaiOS - [Swiss Bike Courier Turned KaiOS Developer](https://kaios.dev/2024/03/swiss-bike-courier-turned-kaios-developer/): Learn about John-David Deubl's journey as a bike messenger and KaiOS developer - [WebAssembly (WASM) on KaiOS](https://kaios.dev/2024/03/webassembly-wasm-on-kaios/): WebAssembly (WASM) and asm.js on KaiOS smart feature phones - [The Complete List of KaiOS Phones (2024)](https://kaios.dev/2024/03/the-complete-list-of-kaios-phones-2024/): The complete list of all KaiOS devices shipped around the world - [Nutritional Scientist in Bangladesh builds KaiOS apps](https://kaios.dev/2024/02/nutritional-scientist-in-bangladesh-builds-kaios-apps/): Hazrat Ali of SoftloftBD is a Nutritional Science graduate in Bangladesh developing many KaiOS apps - [Developing with Flutter on KaiOS](https://kaios.dev/2024/02/developing-with-flutter-on-kaios/): Developing apps for KaiOS using Flutter - [Deep Dive on KaiOS User Agents](https://kaios.dev/2024/02/deep-dive-on-kaios-user-agents/): Analyzing hundreds of KaiOS user agent headers - [From J2ME to KaiOS with Valeriy Skachko](https://kaios.dev/2024/02/from-j2me-to-kaios-with-valeriy-skachko/): How top developer Valeriy Skachko publishes two KaiOS apps per month - [KaiOS App Publishing Guide](https://kaios.dev/2024/02/kaios-app-publishing-guide/): Everything you need to publish an app on KaiOS - [Special Keys on KaiOS](https://kaios.dev/2024/02/special-keys-on-kaios/): Handle special keys (soft keys, volume, camera) on KaiOS - [Complete Feature Detection on KaiOS](https://kaios.dev/2024/01/complete-feature-detection-on-kaios/): What features can you detect with navigator.getFeature() on KaiOS? - [KaiOS Open Source Resources](https://kaios.dev/2024/01/kaios-open-source-resources/): A curated list of free and open source resources for KaiOS - [KaiOS App Ideas](https://kaios.dev/2024/01/kaios-app-ideas/): Ideas for KaiOS apps still unavailable on the KaiStore in 2024 - [Practical KaiOS Optimization Tips](https://kaios.dev/2024/01/practical-kaios-optimization-tips/): Practical tips for meaningfully optimizing KaiOS apps - [Data Storage on KaiOS](https://kaios.dev/2024/01/data-storage-on-kaios/): The complete guide to client-side data storage on KaiOS, including the Device Storage and Data Stores APIs - [What's missing from KaiOS development?](https://kaios.dev/2024/01/whats-missing-from-kaios-development/): What's missing from the KaiOS development experience in 2024? - [Google Analytics and Alternatives for KaiOS Apps](https://kaios.dev/2024/01/google-analytics-and-alternatives-for-kaios-apps/): Setup Google Analytics (GAv4) or alternative web traffic analytics for KaiOS apps - [Localization for KaiOS Apps](https://kaios.dev/2023/11/localization-for-kaios-apps/): Best practices for localization and translation of KaiOS Apps - [[Guest Post] Building a Crypto Wallet on KaiOS](https://kaios.dev/2023/11/guest-post-building-a-crypto-wallet-on-kaios/): Navigating the Challenges of Building a Crypto Wallet on KaiOS - [Running in the Background on KaiOS](https://kaios.dev/2023/10/running-in-the-background-on-kaios/): How to respond to events and perform background tasks on KaiOS - [What's Next for the JioPhone?](https://kaios.dev/2023/08/whats-next-for-the-jiophone/): What's next for the JioPhone, the best-selling KaiOS phone globally? - [Certified Apps on KaiOS](https://kaios.dev/2023/08/certified-apps-on-kaios/): What makes KaiOS Certified Apps Special? (with sources) - [Bluetooth Low Energy on KaiOS](https://kaios.dev/2023/08/bluetooth-low-energy-on-kaios/): Working with Bluetooth Low Energy (BLE) on KaiOS - [Common KaiOS APIs and Interfaces](https://kaios.dev/2023/07/common-kaios-apis-and-interfaces/): Learn how to use common KaiOS APIs and Interfaces - [Jio Bharat 4G V2 and KaiOS](https://kaios.dev/2023/07/jio-bharat-4g-v2-and-kaios/): Is the Jio Bharat 4G the end of KaiOS in India? - [CVE-2023-33293: Installed App List from the KaiOS 3.0 Browser](https://kaios.dev/2023/05/cve-2023-33293-installed-app-list-from-the-kaios-3.0-browser/): CVE-2023-33293: Checking Installed Apps and Versions from the KaiOS 3.0 Browser - [CVE-2023-33294: KaiOS 3.0 Root Command Line in Browser via TCT Web Server](https://kaios.dev/2023/05/cve-2023-33294-kaios-3.0-root-command-line-in-browser-via-tct-web-server/): CVE-2023-33294: Executing Commands as Root from the Browser via TCT Web Server - [CVE-2023-27108: Call Logs in the Browser](https://kaios.dev/2023/05/cve-2023-27108-call-logs-in-the-browser/): CVE-2023-27108: Accessing Call Logs from the Browser on KaiOS 3.0 & 3.1 - [KaiOS' Next Frontier: Africa [Updated February 2024]](https://kaios.dev/2023/04/kaios-next-frontier-africa-updated-february-2024/): KaiOS smart feature phones poised for significant growth across Africa - [Security and Privacy on KaiOS](https://kaios.dev/2023/04/security-and-privacy-on-kaios/): Security and Privacy considerations for KaiOS smart feature phones - [What KaiOS phone should I get?](https://kaios.dev/2023/04/what-kaios-phone-should-i-get/): KaiOS phone recommendations for users, digital detoxers, and developers - [KaiOS App Optimization Tips](https://kaios.dev/2023/04/kaios-app-optimization-tips/): Optimizing apps for KaiOS smart feature phones - [Complete KaiOS Permission Guide](https://kaios.dev/2023/03/complete-kaios-permission-guide/): Complete Guide to App Permissions on KaiOS - [Complete manifest.webapp Guide](https://kaios.dev/2023/03/complete-manifest.webapp-guide/): Complete Guide to manifest.webapp Properties on KaiOS - [Audio and Volume Control in KaiOS](https://kaios.dev/2023/03/audio-and-volume-control-in-kaios/): Controlling volume and audio channels on KaiOS - [The Download on KaiOS Downloads](https://kaios.dev/2023/02/the-download-on-kaios-downloads/): How to stream and store files on KaiOS - [Dos and Don'ts for KaiOS](https://kaios.dev/2023/02/dos-and-donts-for-kaios/): Recommendations for developing KaiOS apps - [Web Activities on KaiOS](https://kaios.dev/2023/02/web-activities-on-kaios/): Sharing, selecting, and viewing data cross-app with Web Activities and deep links - [Developing for KaiOS on Mac](https://kaios.dev/2023/02/developing-for-kaios-on-mac/): Developing KaiOS apps on Mac (updated for Ventura 13.2) - [KaiOS App Monetization](https://kaios.dev/2023/02/kaios-app-monetization/): Monetizing apps with on KaiOS with KaiAds and JioAds - [Advanced KaiOS Development: Push Notifications](https://kaios.dev/2023/02/advanced-kaios-development-push-notifications/): Sending Notifications with the Web Push Protocol on KaiOS - [The KaiOS Ecosystem: Apps & App Stores](https://kaios.dev/2023/02/the-kaios-ecosystem-apps-app-stores/): The KaiOS ecosystem, packaged and hosted apps, and the KaiStore and JioStore - [Advanced KaiOS Development - CORS, TCP Sockets, and Let's Encrypt SSL Certificates](https://kaios.dev/2023/02/advanced-kaios-development-cors-tcp-sockets-and-lets-encrypt-ssl-certificates/): Disabling the Same Origin Policy (CORS), Navigator.mozTCPSocket, and issues with SSL certificates - [History of KaiOS](https://kaios.dev/2023/01/history-of-kaios/): Learn about KaiOS, the world's third most popular mobile operating system ## About KaiOS.dev > A blog dedicated to the KaiOS ecosystem # About the Author **Tom Barrasso** - https://tombarrasso.com Tom Barrasso was the Head of Developer Relations at CloudMosa and founder of PodLP, the first podcast app for KaiOS, the JioPhone, and Cloud Phone with 10M+ installs in over 175 countries.