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Android 16 on a 4.9 Kernel: LineageOS 23.2 on the Pixel 3a

xbill1d ago • 9 min read

Android 16 on a 4.9 Kernel: LineageOS 23.2 on the Pixel 3a

LineageOS ships 4.9-kernel phones only up to 22.2. The Pixel 3a runs 23.2 on its 4.9 kernel with thr...

#android#linux#kernel#lineageos

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Shai Almog1d ago • 3 min read

Smaller Simpler Maven Projects

New Maven apps default to a root POM and common module. Build the same targets, keep native source d...

#java#mobile#android#ios

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PGO for Faster Apps and Generational/Adaptive GC

Shai Almog2d ago • 8 min read

PGO for Faster Apps and Generational/Adaptive GC

Build faster native apps with profile-guided optimization on Pro and Enterprise. Enable PGO for iOS,...

#java#mobile#android#ios

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Update DB Schema in Production with Flyway like Syntax

Shai Almog5d ago • 4 min read

Update DB Schema in Production with Flyway like Syntax

Use ordered SQL migrations on client and server, validate schema history and handle skipped releases...

#java#mobile#android#ios

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Shai Almog4d ago • 5 min read

How Do You Test Spring Compatibility?

Write behavior tests in your Spring application, then run the same assertions against its Codename O...

#java#mobile#android#ios

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Try Real Java in Your Browser, Compiler Errors Included

Shai Almog3d ago • 5 min read

Try Real Java in Your Browser, Compiler Errors Included

The Playground compiles Java to bytecode and translates it inside the browser. Try records and lambd...

#java#mobile#android#ios

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My phone counts every reel I watch, and a 1.9 GB Gemma judges me for it

Jayant Jeet Tomar1d ago • 8 min read

My phone counts every reel I watch, and a 1.9 GB Gemma judges me for it

This is a submission for the Hacktoberfest Open-Source AI Challenge Week 3: Slow and Steady ...

#devchallenge#hf26challenge#hacktoberfest#android

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Why our Flutter in-app purchases got stuck on "Loading" (and the retry design that fixed it)

HS Solution2d ago • 4 min read

Why our Flutter in-app purchases got stuck on "Loading" (and the retry design that fixed it)

In our Flutter app (Android and iOS, in_app_purchase 3.3.1) we shipped a bug where the shop's price....

#flutter#dart#android#mobile

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Unexpected UI‑Thread Jank When Using Reanimated 4 Worklets

Amit chakrabortyOct 16, 2026 • 8 min read

Unexpected UI‑Thread Jank When Using Reanimated 4 Worklets

The situation You are a mobile engineer on a small React‑Native team (React Native 0.73,...

#reactnative#reanimated#mobileperformance#android

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What Actually Happens When Android's Hardware Encoder Hits SVC

Pratim Mallick2d ago • 8 min read

What Actually Happens When Android's Hardware Encoder Hits SVC

A livestream can look perfectly healthy and still get flagged as broken. That's the situation I kept...

#webrtc#video#android#vp9

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Deep‑link navigation in Expo Router exceeding the performance budget

Amit chakraborty2d ago • 8 min read

Deep‑link navigation in Expo Router exceeding the performance budget

The situation You are a senior mobile engineer on a React Native team that ships a...

#reactnative#performance#expo#android

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Unexpected behaviour of Expo Router deep links in production

Amit chakraborty2d ago • 7 min read

Unexpected behaviour of Expo Router deep links in production

The situation You are a mobile engineer on a two‑week sprint. Your team has added a new...

#reactnative#expo#android#ios

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Upgrading the Realme Narzo 30 4G from Realme UI (Android 12) to Android 16: BROM Unlock, 90Hz Fix & Performance Tuning

Kartik ThakurOct 16, 2026 • 20 min read

Upgrading the Realme Narzo 30 4G from Realme UI (Android 12) to Android 16: BROM Unlock, 90Hz Fix & Performance Tuning

How we bypassed deactivated vendor unlocking servers via MediaTek BROM, migrated from Realme UI Andr...

#android#linux#mobile#performance

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Hisaab: Gemma 4 reads my bank SMS on my phone, and the app has no internet permission

Rahul Rao3d ago • 7 min read

Hisaab: Gemma 4 reads my bank SMS on my phone, and the app has no internet permission

This is a submission for the Hacktoberfest Open-Source AI Challenge Week 3: Slow and Steady ...

#hf26challenge#devchallenge#android#privacy

3 3

I Built a Merit Calculator for 25+ Pakistani Universities, With No Server and No Android Studio

Saad Ahmad2d ago • 8 min read

I Built a Merit Calculator for 25+ Pakistani Universities, With No Server and No Android Studio

How I turned 38 university admission formulas into a web app, an Android APK built by GitHub Actions...

#webdev#javascript#android#showdev

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Ping, traceroute and Path MTU on Android without root or the NDK

Dmytro Tishchenko3d ago • 7 min read

Ping, traceroute and Path MTU on Android without root or the NDK

When I started porting my iPhone network tools to Android, I assumed ping, traceroute and Path MTU.....

#android#kotlin#networking#linux

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Sift: share it, sleep, it's filed — on-device Gemma, no cloud

Fahad Irshad1d ago • 9 min read

Sift: share it, sleep, it's filed — on-device Gemma, no cloud

A junk drawer that files itself: two taps to keep anything, then an on-device Gemma sorts it overnig...

#devchallenge#hf26challenge#gemma#android

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I Gave My Phone a Brain: An Android Agent That Posts, Calls and Takes Photos From One Sentence

Nwobodo Ecclesiastes Chidera5d ago • 3 min read

I Gave My Phone a Brain: An Android Agent That Posts, Calls and Takes Photos From One Sentence

Open-source Android AI agent: say a goal, it taps, types, swipes and opens apps for you. Gemini,...

#ai#android#opensource#showdev

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Gazette — any payment notification becomes a ledger, entirely on your phone

Fahad Irshad6d ago • 5 min read

Gazette — any payment notification becomes a ledger, entirely on your phone

A one-screen Android app that turns any bank or wallet notification into a sent/received ledger, rea...

#hf26challenge#gemma#android#hacktoberfest

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How GPS taught my car-sickness app which way is down

Elliott Jempty1d ago • 3 min read

How GPS taught my car-sickness app which way is down

I'm the developer of Perusa, a small Android app I build on my own. It puts dots along the edges of....

#showdev#android#kotlin#gps

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Making a reminder actually ring: lessons from Android and iPhone

Satechs LLC1d ago • 4 min read

Making a reminder actually ring: lessons from Android and iPhone

I built a reminder app called Alarvo where the important reminders behave like an alarm clock: full....

#android#mobile#showdev#ios

1 1

SlothQA: let an open model do the tapping, make evidence decide the result

李东平1d ago • 4 min read

SlothQA: let an open model do the tapping, make evidence decide the result

This is a submission for the Hacktoberfest Open-Source AI Challenge Week 3: Slow and Steady. ...

#devchallenge#hf26challenge#android#opensource

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The Bug Is on Every Android 17 Phone, but Not in the Source Code Anyone Can See

jamilxt5d ago • 8 min read

The Bug Is on Every Android 17 Phone, but Not in the Source Code Anyone Can See

Last weekend, Visual Pinball on Android stopped loading pinball tables out of nowhere. Not all of...

#android#opensource#debugging#security

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Why AI Agents Need a Reconciliation Layer: Modeling the Gap Between Dispatch and Confirmation

StareBrain1d ago • 4 min read

Why AI Agents Need a Reconciliation Layer: Modeling the Gap Between Dispatch and Confirmation

When an AI agent dispatches an action — booking a slot, sending a message, writing a file — there ar...

#android#kotlin#architecture#agents

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Tech Articles

Android 16 on a 4.9 Kernel: LineageOS 23.2 on the Pixel 3a

Smaller Simpler Maven Projects

PGO for Faster Apps and Generational/Adaptive GC

Update DB Schema in Production with Flyway like Syntax

How Do You Test Spring Compatibility?

Try Real Java in Your Browser, Compiler Errors Included

My phone counts every reel I watch, and a 1.9 GB Gemma judges me for it

Why our Flutter in-app purchases got stuck on "Loading" (and the retry design that fixed it)

Unexpected UI‑Thread Jank When Using Reanimated 4 Worklets

What Actually Happens When Android's Hardware Encoder Hits SVC

Deep‑link navigation in Expo Router exceeding the performance budget

Unexpected behaviour of Expo Router deep links in production

Upgrading the Realme Narzo 30 4G from Realme UI (Android 12) to Android 16: BROM Unlock, 90Hz Fix & Performance Tuning

Hisaab: Gemma 4 reads my bank SMS on my phone, and the app has no internet permission

I Built a Merit Calculator for 25+ Pakistani Universities, With No Server and No Android Studio

Ping, traceroute and Path MTU on Android without root or the NDK

Sift: share it, sleep, it's filed — on-device Gemma, no cloud

I Gave My Phone a Brain: An Android Agent That Posts, Calls and Takes Photos From One Sentence

Gazette — any payment notification becomes a ledger, entirely on your phone

How GPS taught my car-sickness app which way is down

Making a reminder actually ring: lessons from Android and iPhone

SlothQA: let an open model do the tapping, make evidence decide the result

The Bug Is on Every Android 17 Phone, but Not in the Source Code Anyone Can See

Why AI Agents Need a Reconciliation Layer: Modeling the Gap Between Dispatch and Confirmation

Unexpected UI‑Thread Jank When Using Reanimated 4 Worklets