How to test device compatibility?

Question

My app is not compatible for my device through Play Store. I am constantly testing on my device and it works properly.

1. How can I learn what is not compatible?
   1.1 I have only 1 'uses-feature', for 'android.hardware.telephony' and it is 'required="false"'

   1.2 My 'compileSdkVersion' = 23, 'minSdkVersion' = 16, 'targetSdkVersion' = 23

   1.3 My device is Nexus 5 with Android 6.0

2. How can I test if a fix works without uploading to the store? Currently I can install and run the app on my device through Android Studio but not through the Play Store.

Answer 1

The aapt tool may be useful in some cases, but the easiest way I've found to test device support is to upload an APK to a closed track in the Play Store Console (under Release management > App releases > Create closed track > Manage):

Then check the device catalog (under Release management > Device catalog):

I had previously excluded a ton of devices from the compatible-screens part of my manifest. I was able to test that the new APK corrected this by clicking on one of the devices in the catalog and expanding the "Track-level status" section on the next page: