Greenify puts battery hungry background apps into hibernation

Martin Brinkmann
May 27, 2013
Updated • May 28, 2013
Apps, Google Android

I was happy with the battery life of my Samsung Galaxy Note 2 smartphone the first couple of weeks. Something changed then however and I noticed that the battery was draining a lot faster than before.

I could not really find out why this was happening but assume that it has either something to do with recent updates to the phone pushed out by Samsung / the phone carrier, caused by apps that I installed on the phone that were running in the background all the time, or by settings that I modified.

There is not a lot that you can do about apps that run in the background, other than to uninstall them if your phone is not rooted. I rooted the Samsung phone recently and discovered the Greenify app afterwards that adds hibernation options to the phone.

Please note: Greenify requires root access to the phone, you cannot use it if you have not rooted the device.

greenify hibernate apps android

Before we dive into the apps' functionality, we should take a look at what hibernating apps means and why you may want to use this functionality instead of comparable options.

Hibernating apps puts them to sleep so to speak. They won't run background tasks anymore that drain your phone's battery, bandwidth or cpu. What's interesting though, and different from comparable apps, is that they can still be triggered by other apps running on your phone, and that you can still use them normally if you open them on the device. So, you get the apps full functionality when you decide to run it.

The app itself is easy to use. It displays a list of apps that may slow down your system when they are running in the background or when they are active. To hibernate any app here, tap on it and then on the checkmark at the top. You can tap on multiple apps at once to hibernate them all in one operation.

A tap on show more apps displays all installed apps on the phone so that you can hibernate those apps as well on the device.


  1. It is probably a good idea to put the apps running in background into hibernation first, then use your phone normally for a couple of hours and check back to see if any other app is displayed that may slow down your system.
  2. Note that background functionality of hibernated apps won't work anymore. This includes notifications, updates or alarms. If you rely on those, do not hibernate the app that is making the information available to you.
  3. The app is most suitable for low- and mid-range phones as it is more likely that you will notice a difference in performance. High-end phones benefit the most in terms of battery power as it may not be drained as fast with the hibernation feature turned on.

Tutorials & Tips

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  1. bruh said on August 18, 2023 at 1:25 pm

    Uhh, this has already been possible – I am not sure how but remember my brother telling me about it. I’m not a whatsapp user so not sure of the specifics, but something about sending the image as a file and somehow bypassing the default compression settings that are applied to inbound photos.

    He has also used this to share movies to whatsapp groups, and files 1Gb+.

    Like I said, I never used whatsapp, but I know 100% this isn’t a “brand new feature”, my brother literally showed me him doing it, like… 5 months ago?

  2. 💥 said on August 18, 2023 at 3:55 pm

    Martin, what happened to those: 12 Comments ( Is there a specific justifiable reason why they were deleted?

    Hmm, it looks like the gHacks website database is faulty, and not populating threads with their relevant cosponsoring posts.

  3. 45 RPM said on August 19, 2023 at 6:29 pm

    The page on ghacks this is on represents the best of why it has become so worthless, fill of click-bait junk that it’s about to be deleted from my ‘daily reads’.

    It’s really like “Press Release as re-written by some d*ck for clicks…poorly.” And the subjects are laughable. Can’t wait for “How to search for files on Windows”.

    1. owl said on August 20, 2023 at 12:51 am

      > The page on ghacks this is on represents the best of why it has become so worthless, fill of click-bait junk…

      Sadly, I have to agree.

      Only Martin and Ashwin are worth subscribing to.
      Especially Emre Çitak and Shaun are the worst ones.

      If intended “Clickbait”, it would mark the end of Ghacks Technology News.
      Ghacks doesn’t need crappy clickbaits. Clearly separate articles from newer authors (perhaps AIs and external sales person or external advertising man) as just “Advertisements”!

      We, the subscribers of Ghacks, urge Martin to make a decision.

  4. chessandonions said on August 20, 2023 at 12:40 am

    because nevermore wants to “monetize” on every aspect of human life…

  5. Frank Rizzo said on August 20, 2023 at 11:52 pm

    “Threads” is like the Walmart of Social Media.

  6. Ashray said on August 21, 2023 at 4:06 pm

    How hard can it be to clone a twitter version of that as well? They’re slow.

  7. Paul(us) said on August 21, 2023 at 5:16 pm

    Yes, why not mention how large the HD files can be?
    Why, not mention what version of WhatsApp is needed?
    These omissions make the article feel so bare. If not complete.

    1. Paul(us) said on August 21, 2023 at 5:18 pm

      Sorry posted on the wrong page.

  8. Marc said on August 21, 2023 at 6:00 pm

    such a long article for such a simple matter. Worthless article ! waste of time

  9. plusminus_ said on August 21, 2023 at 7:54 pm

    I already do this by attaching them via the ‘Document’ option.

  10. John G. said on August 21, 2023 at 11:43 pm

    I don’t know what’s going on here at Ghacks but it’s obvious that something is broken, comments are being mixed whatever the article, I am unable to find some of my later posts neither. :S

  11. Tom Hawack said on August 23, 2023 at 2:28 pm

    Quoting the article,
    “As users gain popularity, the value of their tokens may increase, allowing investors to reap rewards.”

    Besides, beyond the thrill and privacy risks or not, the point is to know how you gain popularity, be it on social sites as everywhere in life. Is it by being authentic, by remaining faithful to ourselves or is it to have this particular skill which is to understand what a majority likes, just like politicians, those who’d deny to the maximum extent compatible with their ideological partnership, in order to grab as many of the voters they can?

    I see the very concept of this as unhealthy, propagating what is already an increasing flaw : the quest for fame. I won’t be the only one to count himself out, definitely.

    1. Tom Hawack said on August 23, 2023 at 2:34 pm

      @John G. is right : my comment was posted on [] and it appears there but as well here at []

      This has been lasting for several days. Fix it or at least provide some explanations if you don’t mind.

  12. Tom said on August 24, 2023 at 11:53 am

    > Google Chrome is following in Safari’s footsteps by introducing a new feature that allows users to move the Chrome address bar to the bottom of the screen, enhancing user accessibility and interaction.

    Firefox did this long before Safari.

  13. Mavoy said on September 16, 2023 at 2:17 pm

    Basically they’ll do anything except fair royalties.

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