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On Android 7 I have some apps preinstalled. I'm talking about fresh installed apps without user data:

  • AOSP Keyboard - 152 KB
  • Browser - 180 KB (org.lineageos.jelly)
  • E-Mail - 288 KB (com.android.email)
  • Calendar - 116 KB (com.android.calendar)

Why are these app so small compared to some small apps I have installed

  • Unit Converter Ultimate ~ 8MB
  • Are you sure it is KB ? – beeshyams Jul 4 '17 at 6:37
  • Thats what I see when I go to Settings => Apps – user27596 Jul 4 '17 at 6:39
  • initially(after clean install/fresh ROM) it will be like that, after usage it will increase. – Rahul Gopi Jul 4 '17 at 6:49
  • You are probably seeing services like com.xxx.zzz please add a screenshot – beeshyams Jul 4 '17 at 6:52
  • @beeshyams In android nougat Settings->Apps shows app data below app name. The other person may be describing about this. – Rahul Gopi Jul 4 '17 at 6:56
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Because Android 7 only shows space occupied from /data.

This is my phone [OnePlus 5]. Using the same app AOSP Keyboard as example.

In settings it shows as 260KB, and

# du -sh /data/data/com.android.inputmethod.latin
24K     com.android.inputmethod.latin
# du -sh /system/app/LatinIME
19M     LatinIME

Personal guess: A normal user can't alter how much space an app takes in /system, so Android chooses to directly ignore it.

  • So is there any advantage for the rom maintainer to install these apps under /system ? – user27596 Jul 4 '17 at 7:42
  • To utilize space under /system partition, I suppose. – iBug Jul 4 '17 at 9:40
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    @user27596 Elevated permissions (especially under /system/priv-app), and prevention of accidental removal of critical apps (imagine the scenario where you are not near a PC, have no input method and have no browser to download it with). – Andy Yan Jul 4 '17 at 12:36

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