You'd forget about One UI 9 on your Galaxy S24 Ultra after reading this

And that's not 5 hours and 20 minutes of active usage with the screen on. No, by his admission, the phone's screen-on time was 3 hours and 15 minutes and the screen-off time was 2 hours and 5 minutes.

Here's the post itself:

As it's seen on the screenshot, the Galaxy S24 Ultra unit wasn't running on Wi-Fi but on mobile (LTE+) data and at QHD screen resolution the whole time. We see that the user was using mainly media apps and social media networks like (YouTube, Instagram and X) and some streaming services. No demanding videogame titles or 4K video editing, apparently.

Ashish says he's had the Galaxy S24 Ultra for two years now. "This is not acceptable", he says, and I agree. In fact, such a battery drain would make me consider getting a new phone: what good is a mobile device if I need to use it only hooked to the charging brick?

Don't jump to conclusions

But since this is happening after the One UI 9 update—and only some Galaxy S owners are reporting such accidents taking place—it's not wise to throw away your Samsung phone yet (in this economy, no gadget, regardless of its brand, should be thrown away).

I guess Samsung will be able to fix this nasty bug via another software update, but that's of little comfort to affected Galaxy S owners. I know flagship users would rather not hear this, but you have to grit your teeth and wait for Samsung's solution.

Furthermore, it's also worth using your phone normally for a few more days, as background optimization after an update may temporarily affect battery life. I remember a nasty battery drainage that happened to my Oppo Find X7 Ultra after upgrading to Android 16 and I was furious for a day or two; then, things got back to normal.

Apple's Batterygate

This reminds me of Apple's Batterygate scandal (from 2017) after Cupertino admitted that software updates had been slowing down certain older iPhones, including the iPhone 6, 6s and 7. Apple said the performance management system was designed to prevent unexpected shutdowns caused by aging batteries struggling to deliver enough power during demanding tasks.

The problem was that Apple hadn't clearly informed users that the updates could reduce performance, leaving many customers wondering why their phones had become slower and whether they needed to buy a new one.

Remember the One UI 7 rollout fiasco?

Hey, at least Samsung is seeding One UI 9 to older devices quickly enough this time around. Unlike the One UI 7 rollout that turned into a major fiasco; remember that? First, One UI 7 (based on Android 15) was delayed for months. When Sammy finally began updating older flagship phones, the company had to suspend the rollout just days later after a serious bug reportedly prevented some Galaxy S24 users from unlocking their devices.

Early reports linked the issue to certain Exynos-powered models, but Samsung offered little detail about what had gone wrong. The company then revised its release schedule, pushing updates for numerous devices further in time.

So, should I upgrade to One UI 9?

I'd say yes if that's your daily driver—let's see what solution Samsung will come up with. One UI 9 is great and all, but by delaying the upgrade for a week or two you won't miss anything.

If, however, you've got a Galaxy S as your secondary phone or you don't care that much about battery, go for One UI 9 all the way.

More Samsung news for you:

• Galaxy Z Fold 7 makes a comeback at a price that's impossible to ignore
• Samsung's Galaxy Z Fold 8 sales may have grown even stronger after the iPhone Duo launch
• Is this Samsung’s answer to cheap fitness bands? Say hello to Galaxy Fit 4