The Xiaomi Redmi K80 Ultra arrives as a flagship-killer that refuses to compromise, packing a MediaTek Dimensity 9400+ chipset, a towering 7410 mAh battery, and a 144Hz OLED panel into a body that still costs around 310 EUR. Announced on June 26, 2025 and running Android 15 with HyperOS 2 out of the box, it targets buyers who want genuine high-end performance without paying the usual flagship tax.
What makes the K80 Ultra stand out in the crowded Redmi lineup is how aggressively it stacks specifications. From IP68 protection and ultrasonic in-display fingerprint reading to UFS 4.1 storage and 100W wired charging, this is a phone built to feel premium in daily use. The sections below break down where it earns its money and where you may need to temper expectations.
Full Specifications
Network
| Technology | GSM / CDMA / HSPA / CDMA2000 / LTE / 5G |
| 2G bands | GSM 850 / 900 / 1800 / 1900 |
| CDMA 800 | |
| 3G bands | HSDPA 800 / 850 / 900 / 1700(AWS) / 2100 |
| CDMA2000 1x | |
| 4G bands | 1, 3, 4, 5, 7, 8, 18, 19, 26, 28, 34, 38, 39, 40, 41, 42, 48, 66 |
| 5G bands | 1, 3, 5, 7, 8, 26, 28, 38, 40, 41, 48, 66, 77, 78 SA/NSA |
| Speed | HSPA, LTE, 5G |
Launch
| Announced | 2025, June 26 |
| Status | Available. Released 2025, June 26 |
Body
| Dimensions | 163.1 x 77.9 x 8.2 mm (6.42 x 3.07 x 0.32 in) |
| Weight | 219 g (7.72 oz) |
| Build | Glass front, aluminum frame |
| SIM | Nano-SIM + Nano-SIM |
| IP68 dust tight and water resistant (immersible up to 2m for 30 min) |
Display
| Type | OLED, 68B colors, 144Hz, Dolby Vision, HDR10+, HDR Vivid, 1800 nits (HBM), 3200 nits (peak) |
| Size | 6.83 inches, 114.5 cm2 (~90.2% screen-to-body ratio) |
| Resolution | 1280 x 2772 pixels, 19.5:9 ratio (~447 ppi density) |
| Protection | Scratch/drop-resistant glass |
Platform
| OS | Android 15, HyperOS 2 |
| Chipset | Mediatek Dimensity 9400+ (3 nm) |
| CPU | Octa-core (1×3.63 GHz Cortex-X925 & 3×3.3 GHz Cortex-X4 & 4×2.4 GHz Cortex-A720) |
| GPU | Immortalis-G925 |
Memory
| Card slot | No |
| Internal | 256GB 12GB RAM, 256GB 16GB RAM, 512GB 12GB RAM, 512GB 16GB RAM, 1TB 16GB RAM |
| UFS 4.1 |
Main Camera
| Dual | 50 MP, f/1.9, 23mm (wide), 1/1.55", 1.0µm, PDAF, OIS 8 MP, 119˚ (ultrawide), 1/4.0", 1.12µm |
| Features | Color spectrum sensor, Dual-LED dual-tone flash, HDR, panorama |
| Video | 8K@30fps, 4K@30/60fps, 1080p@30/60/120/240/960fps, gyro-EIS |
Selfie camera
| Single | 20 MP, (wide), 1/2.0", 0.8µm |
| Features | HDR |
| Video | 1080p@30/60fps |
Sound
| Loudspeaker | Yes, with stereo speakers |
| 3.5mm jack | No |
| 24-bit/192kHz Hi-Res & Hi-Res Wireless audio |
Comms
| WLAN | Wi-Fi 802.11 a/b/g/n/ac/6/7, dual-band, Wi-Fi Direct |
| Bluetooth | 5.4, A2DP, LE, LHDC 5 |
| Positioning | GPS (L1+L5), BDS (B1I+B1C+B2a+B2b), GALILEO (E1+E5a+E5b), QZSS (L1+L5), NavIC, GLONASS |
| NFC | Yes |
| Infrared port | Yes |
| Radio | Unspecified |
| USB | USB Type-C |
Features
| Sensors | Fingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass |
Battery
| Type | Si/C Li-Ion 7410 mAh |
| Charging | 100W wired, PD3.0 Bypass charging |
Misc
| Colors | Gray, White, Blue, Green |
| Price | About 310 EUR |
Price and Availability
The Xiaomi Redmi K80 Ultra offers a compelling combination of features and performance. While the base price is around €310, the actual cost may vary depending on your location and retailer. Below, you’ll find the approximate price of the Xiaomi Redmi K80 Ultra converted into various currencies. Please note that these are estimates based on recent exchange rates as of June 12, 2026 and may not reflect the exact price you’ll find at a retailer.
- United States: $358
- Japan: ¥57,405
- United Kingdom: £268
- Australia: A$510
- Canada: C$501
- Taiwan: NT$11,324
- Denmark: kr2.314
- Saudi Arabia: ﷼1,343
- South Korea: ₩546,766
- Germany: €310
- Brazil: R$1.844
- Vietnam: ₫9.399.675
- Kenya: KSh 46,343
- India: ₹34,230
- Indonesia: Rp 6.430.919
- Nigeria: ₦483,526
- Pakistan: ₨99,741
- Philippines: ₱21,937
- Bangladesh: ৳৪৪,০৫২
Why the Redmi K80 Ultra Is a Standout Value
At roughly 310 EUR, the Redmi K80 Ultra undercuts most phones that share its silicon and battery capacity. You are getting a 3 nm Dimensity 9400+, up to 16GB of RAM, and as much as 1TB of UFS 4.1 storage in a package that is priced like an upper-midranger. For shoppers who track spec-per-euro value, few 2025 devices match this combination of flagship internals and accessible pricing.
Design and Build Quality
The K80 Ultra measures 163.1 x 77.9 x 8.2 mm and weighs 219 g, so it is a substantial handset that owes much of its heft to the large battery. Xiaomi pairs a glass front with an aluminum frame and adds IP68 dust and water resistance, rated for immersion up to 2m for 30 minutes. That ingress rating is rare at this price and signals a phone meant to survive real-world accidents rather than just look the part.
Display Experience
The 6.83-inch OLED panel is the centerpiece, running at a 144Hz refresh rate with a sharp 1280 x 2772 resolution for roughly 447 ppi. Brightness reaches 1800 nits in high brightness mode and peaks at 3200 nits, while support for Dolby Vision, HDR10+, and HDR Vivid covers nearly every streaming standard. With a ~90.2% screen-to-body ratio, it is an immersive canvas for video and gaming alike.
Performance and Storage
The Dimensity 9400+ uses an octa-core layout led by a 3.63 GHz Cortex-X925 core, backed by three Cortex-X4 cores and four efficiency cores, paired with the Immortalis-G925 GPU. Combined with up to 16GB of RAM and the latest UFS 4.1 storage, the K80 Ultra is built for sustained gaming and heavy multitasking. There is no microSD slot, so picking the right storage tier at purchase matters.
Camera Capabilities
Around back sits a dual setup: a 50 MP f/1.9 main sensor with OIS on a 1/1.55-inch sensor, joined by an 8 MP 119-degree ultrawide. A color spectrum sensor aids white balance, and video tops out at 8K@30fps with 4K up to 60fps and slow-motion modes down to 960fps at 1080p. The 20 MP front camera handles selfies at up to 1080p@60fps. It is a capable, practical system rather than a periscope-zoom showcase.
Battery and Charging
The 7410 mAh Si/C Li-Ion battery is the headline figure, comfortably larger than what most flagships offer and promising long endurance even with the 144Hz display active. Charging is handled by a 100W wired solution with PD3.0 and Bypass charging, which helps reduce heat and battery wear during long gaming sessions. There is no wireless charging, a typical trade-off in this segment.
Software and Connectivity
HyperOS 2 over Android 15 brings Xiaomi’s latest interface and feature set. Connectivity is generous: Wi-Fi 7, Bluetooth 5.4 with LHDC 5, multi-band GPS, NFC, an infrared port, and USB Type-C. Stereo speakers plus 24-bit/192kHz Hi-Res and Hi-Res Wireless audio round out a well-equipped media package, though there is no 3.5mm headphone jack.
Who Should Buy the Redmi K80 Ultra
This phone suits performance-focused users, mobile gamers, and value hunters who want flagship-grade specs without flagship pricing. If you prioritize battery life, a fast display, and raw chipset power over a versatile zoom camera or wireless charging, the K80 Ultra is an easy recommendation.
Conclusion
The Xiaomi Redmi K80 Ultra delivers a remarkable amount of phone for around 310 EUR, blending a Dimensity 9400+, a 7410 mAh battery, IP68 durability, and a brilliant 144Hz OLED into one accessible package. Its compromises are predictable: no telephoto lens, no wireless charging, and a hefty 219 g frame. For buyers who want top-tier performance and endurance on a tight budget, it is one of the most compelling choices of 2025 and earns a confident recommendation.