HyperOS 2 on top of Android 15
The Redmi Note 15 Pro 5G ships with a decently recent software setup with HyperOS 2 and Android 15. However, other Xiaomi devices do already offer HyperOS 3 and Android 16 out of the box, which is a bit underwhelming.
As far as support goes, Xiaomi has not officially announced anything yet. In fact, things are still a bit blurry surrounding the Redmi Note 14 family. That one originally launched with the promise of three years of software updates. Xiaomi later extended its support promise and said that users can expect “up to” four years of major updates and “up to” six years of security patches. We can only assume that the Redmi Note 15 series will get a similar promise.
As usual, there’s some nice continuity between versions, and HyperOS 2 will be quite familiar if you’ve come across a HyperOS 1 device or a Xiaomi from the MIUI times. Naturally, there’s some extra polish now, plus neat AI tricks, and Xiaomi claims under-the-hood optimizations as well.
HyperOS 2 on the Redmi Note 15 Pro 5G
Our Redmi Note 15 Pro 5G gives you the option for an app drawer, but you can also choose to have everything on the homescreens. Some software branches don’t let you have the app drawer, but we appreciate seeing that option here. A third “light” UX option, which makes the icons bigger and the features a bit more accessible, is also available.
HyperOS 2 features separate Notification and Control Center pages, with no option for a unified interface for the two. The homescreens support apps and widgets, as well as two flavors of large folders.
More HyperOS 2.0
The Redmi Note 15 Pro 5G is a bit light in the AI department. Google Gemini is preloaded, and you also get Circle to Search, but beyond that, Xiaomi’s own in-house AI tools seem to be missing. Things like AI Writing, AI Interpreter, AI Translate or AI Speech recognition are nowhere to be found.
Gemini • Gemini • Circle to Search
You still get some AI image editing features in the gallery app, but again, not nearly the full set. Things like AI beauty filters and a basic erase and expand tool are present, but nothing fancier like an advanced object or reflections remover.
Image editing in Gallery app
Perhaps, this is not the case for all global units, just our review one, since the official promo materials for the phone mention: “AI Creativity Assistant: AI Erase Pro, AI Remove Reflection, AI Image Expansion, AI Sky, AI Bokeh, AI Cutouts, AI Image Enhancement, AI Beautify, AI Film, and more.”. Otherwise, this lack of advanced AI features is likely a purely financial decision or one stemming from segmentation goals, since most of Xiaomi’s current AI tools are cloud-based anyway and would feel perfectly fine even on lower-tier Redmi devices.
The Redmi Note 15 Pro 5G sports a MediaTek Dimensity 7400 Ultra chipset. That’s a slight upgrade over the Dimensity 7300 Ultra inside last year’s Redmi Note 14 Pro 5G. The Dimensity 7400 Ultra is a modern chipset, manufactured on an efficient 4nm process.
In the CPU department, the chips have four 2.6 GHz Cortex-A78 units and another four 2.0 GHz Cortex-A55 ones. The GPU is the same Mali-G615 MC2 as the Dimensity 7300 Ultra. So, essentially, in terms of raw performance, the two chips should be very close.
The global version of the Redmi Note 15 Pro 5G is available in a few storage tiers: 256GB/8GB, 512GB/8GB, 256GB/12GB, and 512GB/12GB with UFS 2.2 storage and LPDDR4X RAM chips. Our review unit is a 256GB/8GB base one.
We ran our standard slew of benchmarks, and as expected, the Dimensity 7400 Ultra performs nearly identically to the Dimensity 7300 Ultra and the Dimensity 7400 and 7300 sans Ultra, for that matter. We aren’t really sure what the “Ultra” denotes.
In the CPU department, you are looking at performance a bit worse than the Snapdragon 7 Gen 3 and Gen 4 and a bit better than the Snapdragon 6 Gen 3 and 6s Gen 3. Solid mid-range numbers overall.
GPU tests paint a similar overall picture for the Redmi Note 15 Pro 5G and its Dimensity 7400 Ultra. AnTuTu and its more compound set of benchmarks aren’t quite as kind to the Redmi Note 15 Pro 5G, but that doesn’t mean performance is overly bad or anything. You need to temper your expectations somewhat, but the Redmi Note 15 Pro 5G is more than capable of handling basically any everyday task you throw at it with ease. The UI also runs smoothly with no hiccups.
The Redmi Note 15 Pro 5G has excellent thermal management. The Dimensity 7400 Ultra chipset doesn’t kick out much heat to begin with, but any heat that is there gets well dissipated with practically no loss in long-term performance.
Thermal-throttling
The phone’s surface only gets lukewarm as well and never uncomfortable to hold, even after extensive torture testing.