When I try to update some of my applications, I get the error Unable to install *. Delete some items and try again. When I click manage applications, it shows that I have about 160 MB free space and the app I'm trying to install is under 30 MB.

Android version is 4.1.2 and my device is Samsung galaxy ace II.

(I periodically scan the phone with SD Maid to free resources, but it doesn't help this problem)

  • On another device with similar restrictions, I was able to do that by moving apps to the sd-card (with another app) and furtheron by cleaning the cache. For even bigger apps like chrome I deleted them and re-installed them afterwards.
    – ott--
    Commented Jul 9, 2015 at 19:55
  • @ott-- I already moved every app capable of moving to sd-card. For new apps, I need to install them and only after that I can move them to sd-card.
    – Mehraban
    Commented Jul 11, 2015 at 6:28

1 Answer 1


Devices reserve storage space in order to work. My tablet has 500Mb spare, but it won't let me install below 350Mb to keep it working properly.

  • I can remember times that I have only 10~30 MB left!
    – Mehraban
    Commented Jul 11, 2015 at 6:26
  • Some devices don't yave that reserve on the main storage, giving you all the memory it says you have left. An alternative explanation may be that something is reserving it, god knows why.
    – Dan Brown
    Commented Jul 11, 2015 at 13:18

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