The Redmi 15 is a powerhouse in terms of battery, making it perfect for users who value longevity above all else. However, its bulky form factor and slower performance compared to rivals limit its appeal. If all-day endurance is your top priority, it’s worth considering.
When Xiaomi unveiled the Redmi Note 13 series in early 2024 with a starting price of around Rs 17,999, it quickly became a crowd favourite, thanks to its all-around performance and promising design. Fast forward to 2025, with rising ASPs and Xiaomi shifting gears towards premiumisation, the Redmi 15 launched at Rs 14,999 for the base variant, with the top model priced at Rs 16,999, pretty close to what the buyers used to pay for the Note series.
Last year, the Redmi 14C also struck gold in sales and raised the bar for Xiaomi’s affordable lineup. Now, with the Redmi 15, the brand is taking a slightly different gamble. The question is, can it live up to those high expectations and push the promise further?
Starting with the design, we have got the Frosted White colour, but it is also available in two additional colours: Midnight Black and Sandy Purple. At first look, the device looks premium but once you pick it up, you will feel all the difference. At 217 grams, it feels heavier and thicker compared to rivals like the OnePlus Nord CE 4 (review) and iQOO Z10x (review), which are more comfortable in the hand. We could have given points for the large 7,000 mAh battery, but compared to the iQOO Z10x, which also offers almost a similar battery size, it feels lighter and easier to hold.
The back is plastic, but paired with an aerospace-grade metal camera deco gives it a premium-ish vibe. The in-hand feel is solid, and the IP64 rating will definitely build some confidence in you for daily use. Overall, the design is good, though better weight distribution would have improved usability.
The Redmi 15 packs a large 6.9-inch FHD+ LCD panel that’s bright, punchy, and well-suited for streaming Netflix or YouTube. As expected from an LCD, blacks aren’t OLED-level deep, but given most rivals at this price also stick to LCD, it doesn’t feel like a drawback. What does hurt the experience a little are the chunky bezels, which take away from the overall viewing experience.
On the flip side, the display performed impressively in testing, reaching 1024 nits of peak brightness for outdoor use. In our Calman colourimeter test, we got an average Delta E of 3.4, which is a respectable result for an LCD and colours are decent for casual viewing.
The Redmi 15 comes with the Qualcomm’s Snapdragon 6s Gen 3, built on a familiar 2+6 core setup- two Cortex-A78s at 2.3GHz for performance and six Cortex-A55s at 1.95GHz for efficiency. On paper, and even in benchmarks like AnTuTu (455548 points) and Geekbench (932 on single core and 2216 on multi-core), it sits shoulder-to-shoulder with the Redmi 14C, though rivals like the iQOO Z10x and Vivo T4x (review) clearly edge ahead in raw grunt with AnTuTu scores- 688475 and 687928, respectively.
In real-world use, the Redmi 15 holds its own: multitasking is fluid, casual gaming is decent, and HyperOS 2.0 ensures the system feels optimised. Thermal management is decent too, with about 85% stability in throttling tests. Pair that with LPDDR4X RAM, UFS 2.2 storage, two years of OS updates and four years of security patches, and you get a performance package that’s pretty much reliable, if not class-leading, for its price.
Redmi 15 sports a dual 50MP AI setup with an f/1.75 aperture. In daylight, images turn out crisp, with good detail retention and surprisingly natural bokeh. Edge detection in portraits is solid, and colours, though a bit oversaturated and contrast-heavy, look pleasing to the casual eye and are Instagram-worthy. The 8MP front camera is more than enough for selfies and video calls, with extras like AI Sky, AI Erase, AI Beauty, and classic film filters adding a playful touch.
Low-light performance, however, is a weak spot as focus struggles, detail drops, and processing slows down, causing slight lags between shots.
This is where the Redmi 15 flexes its muscles. A massive 7,000mAh battery keeps things running for days. In the PCMark battery test, it clocked an impressive 21 hours and 57 minutes. In real-world use, expect two full days of mixed usage, scrolling, photography, light gaming, and streaming. Even after two BGMI matches, the battery dipped just 4%. The only dampener here is the 33W fast charging, which feels dated and slow for such a large cell, taking around 1 hour and 40 minutes to go from empty to full.
The Redmi 15 plays safe in all aspects and definitely has a few things to flex. The design is pretty impressive, an IP64 rating makes the deal more promising, but the bulky form factor is hard to ignore, at least for me, when you compare the device to he iQOO Z10x that manages almost a similar battery in a lighter frame. The display is bright and colour accuracy is good, but those thick bezels often come in the way of what could have been an immersive viewing experience.
Performance-wise, the Snapdragon 6s Gen 3 keeps things reliable for daily tasks and casual gaming, but benchmark numbers reveal it’s a step behind rivals in the same price bracket. The cameras shine in daylight with natural portraits, but low-light struggles keep them from being all-rounders. The real star of the show is the 7,000mAh battery, which is simply unmatched in terms of longevity, even if the slow 33W charging tests your patience.
So, should you buy it? If your priority is battery life and a phone that will not leave you hunting for a charger, the Redmi 15 is a dependable pick. But if I were personally shopping in the Rs 15,000 range, I would also be looking closely at options like the iQOO Z10x, which offers a better balance of performance, design, and efficiency.
