Saturday, March 28, 2015

Amazon Kindle Fire cheat sheet for Android developers

My company recently published our Android app on the Amazon app store for Kindle Fire tablets. While getting ready to publish the app on the store, I realized that the list of Kindle Fire specifications that Amazon has here is neither developer nor customer support friendly.

Kindle Fire devices show system version in this format: 7.5.1_user_5170020. 




This does not convey the Android OS version at first glance. So, if a user or a customer support representative says that your app is not working on a Kindle and they only give you the system version, you as a developer are not sure which version of Kindle it's failing on.

If you are also debugging via USB on a Kindle device, Android Studio only shows you the Build Model and not the OS version.

To solve these issues, I made the cheat sheet below to help Android developers quickly determine which Android OS version a Kindle is on. Hope this helps!

Note: This table is as of March 28 2015.


Build Model Name Screen Size Status Android OS Fire OS Device -> Latest System Version Screen density
KFSAWA or KFSAWI HDX 8.9" 4th gen 8.9 New 4.4.2 4 22.4.5.3_user_453011120 xhdpi
KFASWI HD 7" 4th gen 7 New 4.4.2 4 20.4.5.3_user_453011120 hdpi
KFARWI HD 6" 4th gen 6 New 4.4.2 4 20.4.5.3_user_453011120 hdpi
KFTHWI or KFTHWA HDX 7" 3rd gen 7 New 4.4.2 4 updated from 3 13.4.5.3_user_453011120 updated from
13.3.2.5_user_325001120
xhdpi
KFAPWA or KFAPWI HDX 8.9" 3rd gen 8.9 Legacy 4.2.2 4 updated from 3 14.4.5.3_user_453011120 updated from
14.3.2.5_user_325001120
xhdpi
KFSOWI HD 7" 3rd gen 7 Legacy 4.2.2 4 updated from 3 11.4.5.3_user_453011120 updated from
11.3.2.5_user_325001620
hdpi
KFJWA or KFJWI HD 8.9" 2nd gen 8.9 Legacy 4.0.3 N/A 8.5.1_user_5156520 hdpi
KFTT HD 7" 2 gen 7 Legacy 4.0.3 N/A 7.5.1_user_5170020 hdpi
KFOT 7" 2nd gen 7 Legacy 4.0.3 N/A 10.5.1_user_5170120 mdpi
Kindle Fire 1st gen 7 Legacy 2.3.3 N/A 6.3.3_user_4112920 mdpi

References:
Downloadable Kindle Fire System Updates
Kindle Fire Specifications