Does the OnePlus 3 use its full 6 GB of RAM after the update?

OnePlus 3 is the first widely-available handset with 6 GB of RAM. However, the company was criticized by smartphone fans worldwide for having an operating system, which aggressively closes background processes, effectively not making full use of the 6 GB of random access memory. Tech-savvy users resorted to using manual tweaks in order to jump over this hurdle, while the company took note and promised that it will improve memory management with the latest OxygenOS 3.2.1 patch. Now that it's out, we decided to test for any observable improvements by comparing system performance before and after installing the update.

Before the 3.2.1 update

Our setup was simple — start with a freshly rebooted OnePlus 3, with no apps loaded in the background. Then, we started some common apps, such as Google Play Music, Facebook, YouTube, and Chrome, with the desktop version of loaded into it, and added in three resource-demanding games — Asphalt 8, Dead Trigger 2, and Mortal Kombat X. Then, we took another lap to check if everything was still properly frozen in the background, instead of being completely restarted.

When we ran the test before the update, the phone was able to keep all apps and games open, without restarting. We had to open a total of 5 tabs of PhoneArena articles in order to see the handset start closing background processes. Indeed, while Play Music, YouTube, and Facebook were still ready to be opened from the point we left them, the three games were all back to their initial loading screens, and Chrome had a hard time keeping all 5 tabs pre-loaded into the memory.

At this point, we downloaded the update and tested again.

After installing OxygenOS 3.2.1

The test went well for the first lap, and we were pleased to see that after opening 5 tabs of the PA website in Chrome still didn't cause the OnePlus 3 to close anything in the background. It was time to up the ante – we went ahead and opened 5 more articles, for a total of 10 desktop-version websites open in the browser's tabs. We went through every one of the tabs, just to make sure they are all loaded, and went for a third lap through the apps and games — they were all still open.

When we reached 15 tabs, we could see the OnePlus 3 having trouble keeping all of the websites open, as it was reloading some of them as we tapped them, and there was a heavy tearing in animations present. At this point, we thought that some of the background processes should surely be closed by now and we went for another lap. Surprisingly, Play Music was still ready to play from where we left off, Facebook was still on the page we left it at, YouTube was still paused mid-way through a clip, and all three games were ready to be picked up from where we left them.


It was time to call the experiment over. While we sure could torture the OnePlus 3 more and add more games in the mix, realistically, in daily use, one would hardly need to have 3 games, 3 apps, and 15 webpages open on their handset all at the same time, right? Well, just in case you do – the OnePlus 3 looks like it can handle it now.

Of course, one is left to wonder whether this will have a negative impact on battery life. But, for that, time will have the answer.

Related phones

  • Display 5.5" 1080 x 1920 pixels
  • Camera 16 MP / 8 MP front
  • Processor Qualcomm Snapdragon 820, Quad-core, 2200 MHz
  • Storage 64 GB
  • Battery 3000 mAh



1. Barney_stinson

Posts: 672; Member since: May 30, 2016

Nothing beats the op3 not even axon !!


Posts: 1168; Member since: Oct 05, 2015

Yeah, I read the xda review on the phone and in then benchmarks it consistently beat everything Android...even when QHD phones wete scaled down to FHD or it was scaled up to QHD. No real throttling, and better heat dissipation. The SD galaxies did the worst, which is proof that Samsung spent much less time optimizing for the 820.

14. Amroze

Posts: 597; Member since: Jul 04, 2016

Crappy Gpu Malit880mp4.

2. j2001m

Posts: 3061; Member since: Apr 28, 2014

You need to do new battery tests

3. tech2

Posts: 3487; Member since: Oct 26, 2012

More importantly, were the tabs opened without adbock ? Because even my 4th gen i5 and 4gb ram I struggles to open your site with ads. This comment wasn't that easy to write.

8. EcoCare

Posts: 444; Member since: Jul 30, 2014

Even my 6GB RAM laptop already flinched when running 2 PA tabs. I guess I need OnePlus' sorcery.

12. Finalflash

Posts: 4063; Member since: Jul 23, 2013

Well the mobile version of the site is much lighter on the ads than the desktop site (even though there are probably more ads on one phonearena mobile page than most shady xxx sites). Desktop phonearena ads are ridiculous, so much so that browsing without adblock is near impossible.

4. ibend

Posts: 6747; Member since: Sep 30, 2014

15 tabs of PA website complete with ads? is this a new kind of torture test? even techrax wont do that harsh thing :-/ /s

13. Finalflash

Posts: 4063; Member since: Jul 23, 2013

I assume that's where the animation tearing and stutters in their test came from. A less ad heavy site would likely not suffer that much.

17. ibend

Posts: 6747; Member since: Sep 30, 2014

even 15tabs of youtube running video is lighter /s

5. marorun

Posts: 5029; Member since: Mar 30, 2015

I use adblock browser now on my android no ads anynore lol and can still post.

19. aman5mathur

Posts: 241; Member since: Mar 28, 2014

Well im on miui rom for galaxy note 2 kitkat and i see no ads! On chrome by the way. Probably im the single person opens like butter to.

7. mobiledigger

Posts: 110; Member since: Sep 24, 2015

Nice! I'm amazed and surprised

9. EC112987

Posts: 1214; Member since: Nov 10, 2014

Really wanted this phone for the price but then all the negative articles started popping up and I decided to not bother. I'll stick to the big guns when t comes to my phones. I know updates fix many issues but who wants to wait?

11. TheOracle1

Posts: 2215; Member since: May 04, 2015

Chrome is a lagfest, iPhonearena is a lagfest, Facebook is a cancerous lagfest. One Plus are trying to do what MIUI and IOS do well which is murder apps like Facebook in memory and they've failed. Every One Plus phone has always had some crippling flaws that prevented me from buying one. I like the phone in theory but they keep on doing stupid stuff with customer service being a major flaw. No SD, useless RAM capacity, orange screens on the original opo. The Zenfone2 smoked the last one and there are many more "flagship killers" now that are better alternatives.

16. anotherfan

Posts: 62; Member since: Sep 28, 2015

when it comes to multitasking, htc is on top

18. balabala001

Posts: 6; Member since: May 11, 2015

Full metal device, like it. HTC also used metal mostly on its devices, so does OUKITEL. Love the touching feeling.

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