Not showing resource id

i have two devices
Android version 4.2.2
Android version 4.4.2

Testing on same app
On 4.4.2 uiautomatorviewer shows resource id
On 4.2.2 uiautomatorviewer do not shows resource id

So can anyone plz tell me why this happening… is it a bug or limitation

The resource-id is only available in > 4.3 (API Level 18).
For less than that use “Selendroid” in automationName capability [1]


Thanks for providing such a wonderful information