August 14^th (2024) UPDATE:

Android 15 is close to finalizing, which will necessitate an update to Vol 1 and possibly 2 (ART format changed YET AGAIN with some new section). Expect 10 or so more pages in Vol I and a yet unknown number of pages in Vol II. And then I'll push for III & IV. Yes, I know I've been saying that for a long time. But you seriously have no idea what a Sisyphean task Android Internals is. And I have a real life, and an actual job here.

June 10^th (2024) UPDATE:

Still very much here. Alive and well. Not on Twitter, so don't be upset if I don't reply to you. Updated imjtool. Vols III & IV to hopefully come out in '24, and be updated for Android 15.
Though I admit to have been sidetracked by This..

Dec 20^th (2023) UPDATE:

Happy Holidays to all! I'm still alive, still working on the books. Vols I & II updated for 14.0, and both III & IV will come out in '24. Hopefully soon.

Aug 7^th (2023) UPDATE:

III will finish before IV. ETA by 14. Oh. And (due to reader request) we have SSL/TLS now.

Oct 25^th (2022) UPDATE:

Volume I now in v2.2 - cover reflects COVID being behind us (and updates for Android 13). Volume IV indeed nearing completion, III will take more time (but I'm on both).

Jun 16^th (2022) UPDATE:

Working in parallel on Vols III and IV. At this rate IV (spun off from II) is nearer to completion.

Mar 30^th (2022) UPDATE:

Going live April 1st - no joke! If you buy the book on Amazon Please use this link so I can get back commissions!

Feb 16^th (2022) UPDATE:

Vol II is ready, and first copies ship by end of this month mid/early March to the dozens who preordered! Thank you SO MUCH for believing in me. Sorry for delay, but upside is I'll be up to date with Android 13 DP :-) Details here. Amazon orders will open up shortly thereafter!

Nov 10^th (2021) UPDATE:

Volume I is now in v2.1 - fully in sync with Android 12 (per the Pixel 6). Meanwhile, work on Volume II is nearing the finish line, but the finish line has moved a bit further with more features to cover...

Jan 18^th (2021) UPDATE:

Happy New Year!

The second edition of Android Internals is now officially live! The new and improved volume I is now on sale (just six years later ;-) Added well over 240 pages from previous edition (effectively, double size), with expansive coverage for filesystems/storage, slots/update_engine/apex, logging, power mgmt, and a hardware primer noting BSP/vendor differences

Volume 2 to follow soon is done, done, DONE (really, this time). Also far greater than the original (and forever delayed) plan, with a strong focus on hardware (HAL implementations) and Android 10, 11 and 12 and some 13 features.

Volume 3 (yep!) dealing exclusively with security to arrive sometime around mid-year. Jury's still out if I follow the model of MOXiI 3 and show I will be discussing actual (but naturallly patched) exploits. If you have any good Android malware samples, though, that's a shoe-in for inclusion, so please share!

Meanwhile, you might want to check out the Table of Contents, as well as updates I've made to jtrace, imjtool, and the slowly expanding Android Device Database. I've also started a changelog.