If you don’t have a phone (such as a Google Pixel) that offers such a feature, you can also use a third-party app such as the popular SWAP. This reserves a portion of your phone’s storage as overflow space when available memory runs out. While you can’t upgrade a phone’s RAM and Android doesn’t swap RAM to internal storage, some third-party solutions do allow the use of system storage as RAM. If you’re doing split-screen app work while listening to music in the background or downloading files, more RAM ensures things go off without a hitch. As soon as a process needs that memory, it’s instantly released, but it’s never literally empty or unused.Ĭonsidering that many applications in Android run in the background, it’s also handy to have more RAM so that background processes can proceed smoothly, even if you’re using a RAM-hungry app (such as PUBG or Diablo) in the foreground. Like all modern operating systems, Android uses as much RAM as you have to accelerate things in general. For example, if you’re doing file transfers, they can be sped up by using your RAM as a cache. The more RAM you have, the more space you have in ZRAM space, the more active apps you can hold in memory, and the smoother switching between recent apps is likely to be.Īndroid uses RAM even when it’s not explicitly allocated to an app. However, this does come with a performance penalty. So, in theory, they should save their state to storage so you can pick up where you left off. Android apps are written in such a way that they know they could be killed off like this as a normal part of RAM management. If no more ZRAM is available, Android will kill older processes that aren’t currently in use, freeing up any memory they’re using. However, it’s still faster than loading app data from storage. This data can’t be read directly but must be decompressed and loaded into the regular portion of RAM first. It’s just a logical portion of RAM that’s been cordoned off, containing compressed RAM pages. If there isn’t enough free RAM, the first thing Android does is “swap RAM pages” to a special compressed segment of RAM called ZRAM.
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