Xiaomi 15 Ultra Issue: What Users Are Really Saying on Reddit

The Xiaomi 15 series—including the standard, Pro, and Ultra editions—has been making waves in India with its compact design, powerful camera setup, and promising new HyperOS software. But beyond the spec sheets and promotional videos, user experiences tell a more complex story. If you’ve been browsing Reddit or tech forums, you’ll find recurring mentions of Xiaomi 15 issues, particularly related to heating, battery performance, and software glitches.

In this blog, we break down the most discussed Xiaomi 15 problems, giving you a real-world look before you decide to buy.

1. Xiaomi 15 Heating Issue: Still a Problem in 2025?

One of the most discussed concerns on Reddit and other forums is the Xiaomi 15 heating issue. While some users report no problems during casual use, many highlight rapid heating during:

Camera use: Shooting long videos or taking photos under direct sunlight can cause the device to hit up to 48°C.
Gaming sessions: Even lightweight games can lead to random frame drops or lags due to heat buildup.
Performance throttling: Some users say the phone becomes “unusable” when hot, with apps stuttering or closing.

Interestingly, Xiaomi fans argue this shows the phone’s ability to dissipate heat quickly, but it’s clear the Xiaomi 15 Ultra issue remains unresolved for many.

A possible fix is reportedly coming with HyperOS 2.0.2, which Xiaomi is testing to control heating better through software-level optimizations.

2. Xiaomi 15 Battery Issue: Morning Drain Woes

The Xiaomi 15 battery issue is another Reddit hot topic. While battery life is generally considered “decent” for moderate users, certain problems have been flagged:

Standby battery drain overnight: Users report a 2% to even 17% battery drop overnight.
Flipkart app has been named as a major background drain culprit.
Heavy camera usage or gaming causes rapid battery depletion.

Solutions suggested by users include enabling battery saver mode before bed, clearing apps from memory, or using RAM management tools.

3. Xiaomi 15 Fog Issue: Condensation Concerns

Some early users have also raised concerns about a fog issue in the Xiaomi 15 camera module, especially after extended outdoor photography or exposure to humidity. This might be due to:

Compact internal design
Lack of weather sealing
Temperature differences between indoors and outdoors

While not widespread, the Xiaomi 15 fog issue is worth noting if you’re a frequent photographer.

4. Xiaomi 15 Ultra Issues on Reddit: Real Feedback

The Xiaomi 15 Ultra was hyped for its 1-inch sensor and flagship camera performance, but even it isn’t without flaws:

Overheating while filming in 4K/8K
Super Macro and Zoom Modes causing lag when processing high-res images
Redditors report issues with post-processing time, especially in low-light

On the bright side, the Leica color processing and ultra-detailed night shots still make the Ultra a favorite among camera enthusiasts.

5. Software & HyperOS: Mixed Experience

One of the biggest changes this year is HyperOS, Xiaomi’s replacement for MIUI. While smoother and lighter, it’s not entirely free from bugs:

Random heating and app drain
Chrome not loading links from other apps, causing infinite loading loops
UI lags during multitasking or background activity

Xiaomi 15 Pro users particularly mention how software updates are slow and often manual. Some even recommend disabling auto-updates and waiting for user feedback before installing patches.

6. Gaming & Performance: Xiaomi 15 Pro Issue

If you’re a gamer, beware: Xiaomi 15 Pro issues include frame drops in non-intensive games like Soul Knight and occasional stutters in BGMI and Genshin Impact. This isn’t always due to the hardware, but rather:

Lack of optimization for specific games
HyperOS’s aggressive RAM management

Despite packing the Snapdragon 8 Gen 3, the performance doesn’t always feel “flagship” smooth, especially under heat or background app load.

7. Xiaomi 15 Edition Variants: What to Choose?

Among the Xiaomi 15, 15 Pro, and 15 Ultra, each has its pros and cons:

Xiaomi 15: Compact, affordable, good cameras, some heating
Xiaomi 15 Pro: Larger battery, better thermals, but occasional app stutters
Xiaomi 15 Ultra: Photography beast, but with heating and fog issues under extended use

If you’re a camera enthusiast, the Ultra is tempting. But for most users, the Xiaomi 15 Pro strikes the best balance—if Xiaomi patches the performance bugs.

Final Verdict

Despite its issues, the Xiaomi 15 edition lineup still brings flagship features at competitive pricing. But it’s essential to go in aware of the possible heating, battery, and software bugs. Reddit and real-user reviews are invaluable sources if you’re planning to buy.

So if you’re searching for “Xiaomi 15 issues Reddit” or trying to understand whether these Xiaomi 15 problems are deal-breakers—it all comes down to your priorities.

Want unbeatable cameras? Go Ultra. Want balance? Go Pro. Want compact performance? Stick with the base 15.

What’s your experience with the Xiaomi 15 so far? Drop your thoughts below!

Xiaomi 15 Ultra FAQs

1. Does the Xiaomi 15 overheat?

Yes, some users report heating during camera use or gaming, reaching up to 48°C. Xiaomi acknowledges this and may fix it via a HyperOS update.

2. How’s the battery life?

Decent for daily use, but standby drain (up to 17% overnight) occurs due to HyperOS. Fast charging is supported.

3. Any fixes for battery drain?

Try battery saver mode, clearing RAM, or closing background apps.

4. How good is the camera?

One of the best in its price range, with ultra-slow motion (1920fps) and fast shutter speed. Heavy processing may cause heating.

5. Is HyperOS stable?

Mostly smooth and reliable, but some bugs (e.g., Chrome loading issues) exist. Updates may improve optimization.

6. Gaming performance?

Handles BGMI at 120FPS, but some games (e.g., Soul Knight) have frame drops due to poor optimization.

7. Design vs. competitors?

Compact and comfortable vs. OnePlus 13 (performance) and iQOO 13 (gaming-focused). No magnetic features.