Why Unity 5.x's apk is bigger than 4.3 ?

I have read this question, and I know change the Divice Filter can reduce apk size, but lose some intel divice user in the same time.

But I still have no ideal why unity5.x’s apk is big while unity4.3 the last version I used is small.
unity4.3 have no divice filter question?

another question is have any good way to find how much player use intel device?
thx

Please correct me if i’m wrong- When a APK is created all the library’s the project is using must be put in the APK as well. Unity 5 has more features than 4.3 did, therefore more library’s, therefore more space. But being no android tech nerd I may be wrong, so please correct me if i am :smiley: