The Xiaomi Redmi K80 Ultra is a performance-first Android phone built around a flagship MediaTek Dimensity 9400+ chipset, a large 6.83-inch OLED display, and an unusually big 7410mAh silicon-carbon battery. It sits in the familiar Redmi Ultra lane: aggressive hardware, fast charging, and a practical feature set aimed at users who care more about speed and endurance than luxury camera branding.
This article looks at the Redmi K80 Ultra from a buying and usability angle instead of repeating the full source table. The focus is on what the specifications mean in daily use, where the phone looks strongest, and where buyers should be careful before choosing it over other gaming, battery, or camera-focused Android phones.
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 October 11, 2026 and may not reflect the exact price you’ll find at a retailer.
- United States: $347
- Japan: ¥54,971
- United Kingdom: £263
- Australia: A$498
- Canada: C$495
- Taiwan: NT$11,090
- Denmark: kr2.317
- Saudi Arabia: ﷼1,303
- South Korea: ₩466,228
- Germany: €310
- Brazil: R$1.741
- Vietnam: ₫8.989.679
- Kenya: KSh 45,066
- India: ₹33,588
- Indonesia: Rp 6.209.800
- Nigeria: ₦464,822
- Pakistan: ₨96,132
- Philippines: ₱21,845
- Bangladesh: ৳৪২,৭৭৮
Why Should You Buy Xiaomi Redmi K80 Ultra?
The Redmi K80 Ultra makes the most sense for buyers who want near-flagship performance, a high-refresh OLED screen, and long battery life in one package. Its headline combination is the Dimensity 9400+ platform, up to 1TB of UFS 4.1 storage, a 144Hz display, and 100W wired charging. That gives it a clear identity: this is not a compact lifestyle phone or a camera-first flagship, but a power-heavy Redmi built for gaming, multitasking, streaming, and heavy daily use.
Value Positioning
Redmi Ultra models usually compete by pushing core hardware harder than their price class suggests, and the K80 Ultra follows that formula. The source-listed price places it in a highly competitive range for a phone with a 3nm flagship chipset, IP68 protection, Wi-Fi 7, and a very large battery. The value story is strongest if you prioritize processor speed, display quality, charging, and storage options. It is less compelling if you need wireless charging, expandable storage, or a more advanced multi-camera system.
Design and Durability
The phone measures 8.2mm thick and weighs 219g, so it is not a featherweight device. That weight is understandable given the 7410mAh battery, aluminum frame, large display, and IP68 dust and water resistance. The glass front and aluminum frame give it a more solid hardware profile than many mid-range phones, while the dual Nano-SIM layout keeps it practical for users who manage two numbers. The main trade-off is size: one-handed comfort will depend heavily on your grip and case choice.
Display Experience
The 6.83-inch OLED panel is one of the strongest parts of the phone. It supports 68 billion colors, 144Hz refresh rate, Dolby Vision, HDR10+, HDR Vivid, and a listed peak brightness of 3200 nits. The 1280 x 2772 resolution gives it a sharp density of about 447ppi, which should be more than enough for reading, gaming interfaces, and high-resolution video. The display is also protected by scratch and drop-resistant glass, making it a good match for users who spend a lot of time outdoors or play games for long sessions.
Performance and Storage
The MediaTek Dimensity 9400+ is the engine that defines the K80 Ultra. With a Cortex-X925 prime core, Cortex-X4 performance cores, Cortex-A720 efficiency cores, and Immortalis-G925 graphics, the phone is built for demanding apps and high-frame-rate games. UFS 4.1 storage also matters because it helps with app loading, large game files, and fast media handling. The lack of a memory card slot is worth noting, but the available 256GB, 512GB, and 1TB configurations give buyers room to choose before purchase.
Camera Expectations
The camera system is capable but not the most ambitious part of the device. The 50MP wide camera includes PDAF and OIS, which are the important pieces for steadier photos and video. The 8MP ultrawide camera is useful for landscapes, buildings, and group shots, but it is a modest secondary sensor rather than a flagship-grade companion camera. Video support is much stronger on paper, with 8K recording, 4K at up to 60fps, high-frame-rate 1080p modes, and gyro-EIS. Buyers who shoot casual photos and lots of video should be comfortable; serious zoom or portrait users may want a phone with a dedicated telephoto camera.
Battery and Charging
The 7410mAh silicon-carbon battery is the specification that separates the K80 Ultra from many slim flagships. Capacity this large should appeal to gamers, travelers, delivery workers, students, and anyone who dislikes mid-day charging. The 100W wired charging support helps offset the battery size, while PD3.0 and bypass charging make the phone more flexible for long gaming or desk use. There is no listed wireless charging, so the battery strategy is clearly wired, fast, and endurance-focused.
Software and Daily Features
The Redmi K80 Ultra ships with Android 15 and HyperOS 2. That means the phone is built around Xiaomi’s current software environment, with Xiaomi services, customization tools, and power-management behavior layered over Android. The under-display ultrasonic fingerprint sensor is a premium touch, and the sensor set covers the basics for navigation, motion, games, and orientation. Buyers who are sensitive to regional ROM differences, notifications, or preloaded apps should check the exact software build sold in their market before importing.
Connectivity, Audio, and Sensors
Connectivity is broad, with 5G SA/NSA, extensive LTE band support, Wi-Fi 7, Bluetooth 5.4, NFC, infrared, USB Type-C, and multi-constellation positioning. The inclusion of GPS L1+L5, Galileo, BeiDou, QZSS, NavIC, and GLONASS support is useful for navigation reliability. Stereo speakers and Hi-Res wired and wireless audio support strengthen the entertainment side, though there is no 3.5mm headphone jack. For buyers outside the original sales region, network band compatibility remains one of the most important checks before purchase.
Who Should Buy It?
Choose the Redmi K80 Ultra if your priorities are performance, battery life, a large premium display, fast wired charging, and durable IP68 construction. It is especially attractive for gaming, heavy multitasking, media streaming, and users who keep phones for storage-heavy workloads. Skip it if you want a compact phone, wireless charging, microSD expansion, or a camera system with strong zoom hardware. Its best audience is the practical power user who wants flagship speed without paying mainly for camera extras.
References: Xiaomi official Redmi K80 Ultra product page; MediaTek Dimensity 9400+ official page; GSMArena Redmi K80 Ultra specification reference; source catalog entry.
Conclusion
The Xiaomi Redmi K80 Ultra is a strong choice for buyers who want a big OLED display, flagship-class Dimensity performance, long battery life, and fast wired charging in a durable Redmi body. Its camera setup is useful but not the main attraction. Recommended for performance and battery-focused users.
