Skip to main content

OnePlus 9 series users report multiple bugs after latest Oxygen OS 12 update

Things don’t seem to be going well for OnePlus, which recently rolled out a significant update for its 2021 flagships — the OnePlus 9 and the OnePlus 9 Pro. Initial reports indicate that the fresh Oxygen OS 12 update for both smartphones is littered with bugs. Hours after people updated their phones, they took to social media and OnePlus’ own forums to voice their concerns.

The issues range from seemingly minor ones like UI inconsistencies and poor animations to potentially crippling ones like slow Wi-Fi speeds and losing the ability to make and receive calls. The move to Oxygen OS 12 has also resulted in OnePlus removing several customization options on the OnePlus 9 series. With the update installed, users lose the ability to change individual icons, disable Google Feed, or customize the status bar.

Recommended Videos

It's official, I absolutely hate this new ColorOS update by @oneplus. It's half-assed, animations looking shitty, some apps with different DPI scaling, and reeks of chinese skin type of Android. I hate it and I can't wait to ditch this for the Pixel 6.

— Francisco (@franciscof_1990) December 7, 2021

A OnePlus forum member listed several issues he observed on his OnePlus 9. According to him, the update has broken the task manager feature, which can no longer close all apps in the background. WhatsApp users have noticed that they are unable to use WhatsApp Web. The default phone app on Oxygen OS 12 is different from the previous OS, and it no longer offers the option for call recording.

Another OnePlus forum user claimed that his SIM card has stopped working and that even a factory reset did not fix the issue. Some others report that the phone does not connect to 5G networks anymore. There seems to be an issue with the Alarm functionality as well, with one user indicating that his phone “forgets” a preset alarm if he reboots the device.

If you own a OnePlus 9 series device, it might be a good idea to hold the urge to update your phone to the latest version of Oxygen OS 12. Given the number of complaints after this update, chances are high OnePlus will roll out a fix for these bugs in the days to come.

Rahul Srinivas
Former Digital Trends Contributor
Rahul is a smartphone buff turned tech journalist who has been tinkering with all things mobile since the early 2000s. He has…
I did a OnePlus 12 vs. OnePlus 12R camera test, and there’s a big difference
Genshin Impact Edition OnePlus 12R (left) and Flowy Emerald OnePlus 12.

OnePlus has had a very solid start to 2024 with the release of the OnePlus 12 and the OnePlus 12R. While both phones look very similar, one is a flagship, while the other is a more budget-friendly option with slightly lesser specs.

Though both devices' cameras appear similar at first glance, they’re actually quite different. In addition to different specs, only the OnePlus 12 has Hasselblad branding, meaning that it has better color calibration, white balance and exposure, and more. In short, photos you take with the OnePlus 12’s Hasselblad camera are probably going to look better.

Read more
The OnePlus 12 is the OnePlus phone I’ve been waiting for
A person holding the OnePlus 12.

Since it arrived, the OnePlus 12 has been sitting on a shelf, unused, behind my desk. Apart from a few days when I tested out the camera, battery, and performance, I haven't had a chance to really dig into the phone.

Don’t mistake this for indifference, though. I’ve been itching to use it for more than just those early few days, but due to various reasons, it hasn’t been possible until now. Was it worth the wait?
Why did it have to wait?

Read more
Don’t buy the OnePlus 12 — 6 reasons to wait for the OnePlus 13
OnePlus 12 in hand with OnePlus 12R in the background.

OnePlus 12 Prakhar Khanna / Digital Trends

OnePlus has made a significant name for itself in recent years with some of the best Android phones out there. Its most recent endeavor, the OnePlus 12, is a fantastic flagship for anyone who wants something that's not just another Samsung Galaxy or Apple iPhone.

Read more