[AC Question]

My phone is Lenovo Vibe K5 Note with 3 GB RAM running on Android M. But I get 1 to 1.5 RAM free even I'm not running more than one application. Any suggestions to fix this issue?

[nahoku]

This is typical Android. It's the same on everyone's phone. Mine also has 3gb ram and right now 1.3gb is free with no apps running either. If you want your ram to be refreshed, restart your phone... however, over a short period of time, ram usage will return to what you're seeing now. Nothing to worry about.

[Tim1954]

Android is one of the most efficient systems out there, it largely looks after its own resources, let it do its thing..

[B. Diddy]

This is an oldie but an goodie: RAM: What it is, how it's used, and why you shouldn't care | Android Central

[anon(9983233)]

I love it when someone says "No apps are running yet something is draining my ram".. There will always be something running within your phone, unless you use something like Opera Max, this app will allow you to adjust which apps continue to run and shut down those that you do not wish to have running.

In this instance, limit what programs should run at any given time. I personally keep google play off, but with a simple swipe, the app returns and I'm able to download other apps, then simply shut down the app via Opera Max.

As well as this, it will control the apps usage and send you a detailed runtime reports of your's apps usages as well as app savings. Opera max works in conjunction with the Opera Mini web browser. The browser also saves you data, as well as blocks web ads. Over all If you've not looked into any product or software as manufacture by Opera.. Now's the time to start save your data and ram with Opera Max.

[B. Diddy]

But it's also important to realize that apps that are currently open in RAM aren't necessarily active. If an app isn't in the foreground, or doesn't have a service that is actively doing something in the background, then it's essentially paused, and shouldn't be using CPU or battery. My concern with any app that tries to "clear up RAM" is that it works counter to how Android is designed (which is to keep RAM relatively full--typically about 70-80%). They can be useful if there's a poorly coded/optimized app that is taking up too many resources in the background, though.