Nothing Phone (4b) vs Redmi K90 Ultra
Which is Better?
Looking for the differences betweenNothing Phone (4b)andRedmi K90 Ultra?This side-by-side comparison covers price, display, chipset, performance, memory, cameras, battery, connectivity, features, dimensions, and other key specifications to help you decide which device is the better choice.
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| Specification | Nothing Phone (4b) | Redmi K90 Ultra |
|---|---|---|
| General | ||
| Brand | Nothing | Xiaomi |
| Model | Phone (4b) | K90 Ultra |
| Device Type | Smartphone | Smartphone |
| Status | Available | Available |
| Announced | July 7, 2026 | June 30, 2026 |
| Released | July 7, 2026 | July 1, 2026 |
| Price | ₱21,990 | ₱27,099 |
| Body | ||
| Dimensions | 164.4 x 78.2 x 8.6 mm | 162.91 x 77.93 x 8.18 mm |
| Weight | 210 g | 227 g |
| Build | Dragontrail Pro Glass front, plastic frame and back | Glass front, Aluminum alloy frame |
| Colors | Black, White, Blue | Shadow Black, Space Silver, Sky Blue |
| SIM | Dual Nano-SIM | Dual Nano-SIM |
| Water Resistance | Yes | Yes |
| IP Rating | IP64 | IP66, IP68, IP69 |
| Display | ||
| Display Type | Super AMOLED | 1.5K AMOLED (M10 substrate) |
| Display Size | 6.77 inches | 6.83 inches |
| Resolution | 1080 x 2344 pixels | 1280 x 2772 pixels |
| Refresh Rate | 120Hz (adaptive) | 165 Hz |
| Peak Brightness | 2,000 nits | 3,500 nits |
| Screen Protection | Dragontrail Pro Glass | — |
| Screen-to-Body Ratio | 87.4% | 87% |
| Pixel Density | 381 ppi | 416 ppi |
| Display Features | HDR10+, 1,000Hz touch sampling, Pixel-level micro-shifting | HDR10+, Dolby Vision, 3500Hz instant touch sampling, DC Dimming |
| Platform | ||
| Operating System | Nothing OS 4.1 (Android 16) | HyperOS 3 (Android 16) |
| Chipset | Qualcomm Snapdragon 6 Gen 4 (4 nm) | Qualcomm Snapdragon 8 Elite |
| CPU | Octa-core (1x2.3 GHz Cortex-A720, 3x2.2 GHz Cortex-A720, 4x1.8 GHz Cortex-A520) | Octa-core (2x 4.32 GHz Oryon V2 + 6x 3.53 GHz Oryon V2) |
| GPU | Adreno 810 | Adreno 840 (with D2 discrete gaming chip) |
| Memory | ||
| RAM | 8GB | 12GB / 16GB LPDDR5X |
| Internal Storage | 128GB / 256GB | 256GB / 512GB |
| Storage Type | UFS 2.2 | UFS 4.1 |
| Memory Card Slot | No | No |
| Rear Camera | ||
| Camera Setup | Dual | Dual |
| Main Camera | 50MP, f/1.8 (OIS/EIS) | 50MP (Light Fusion 800 sensor, f/1.68, OIS + EIS) |
| Ultra-Wide Camera | 8MP, f/2.2 (119.5° FOV) | 8MP (f/2.2) |
| Telephoto Camera | No | No |
| Macro Camera | No | No |
| Depth Camera | No | No |
| Camera Features | TrueLens Engine 4, Ultra XDR, Dual Capture, Disco/DV filters, Signature Presets, Playground | LED flash, Ultra XDR |
| Video Recording | 4K at 30fps | 8K |
| Front Camera | ||
| Front Camera | 16MP, f/2.4 | 20MP |
| Front Camera Features | Face unlock | Face Unlock |
| Front Video Recording | 1080p@30fps | 4K@30fps, 1080p@30/60fps |
| Battery | ||
| Battery Capacity | 6,000mAh (India) / 5,200mAh (Global) | 8,550mAh |
| Battery Type | Li-ion | Li-Ion (Jinshajiang) |
| Wired Charging | 33W (0-50% in <30 min) | 100W |
| Wireless Charging | No | No |
| Reverse Charging | 7.5W (Reverse Wired) | 22.5W Wired |
| Connectivity | ||
| Cellular | 5G | 5G SA/NSA |
| Wi-Fi | Wi-Fi 6 (802.11 a/b/g/n/ac/ax) | Wi-Fi 7 (802.11 ad) |
| Bluetooth | 6.0 | 5.4 |
| GPS | Yes | L1+L5, Beidou, Galileo, GLONASS, QZSS, NavIC |
| NFC | Yes | Yes |
| Infrared | No | Yes |
| USB | USB Type-C 2.0 | USB Type-C 3.2 |
| 3.5 mm Audio Jack | No | No |
| FM Radio | No | No |
| Sensors | ||
| Fingerprint Sensor | In-display optical | Under-display (3D Ultrasonic) |
| Face Unlock | Yes | Yes |
| Accelerometer | Yes | Yes |
| Gyroscope | Yes | Yes |
| Proximity Sensor | Yes | Yes |
| Compass | Yes | Yes |
| Barometer | No | Yes |
| Audio | ||
| Speakers | Stereo | Bose-tuned 1115X dual stereo speakers |
| Microphones | Dual | Dual |
| Dolby Atmos | — | Yes |
| Features | ||
| AI Features | Nothing Essential AI, ChatGPT integration, Circle to Search, Google Gemini, Essential Key | D2 dedicated AI gaming chip, E-sports zone touch controls |
| Stylus Support | No | No |
| Satellite Connectivity | No | No |
| Security | 3 years Android updates, 6 years security patches | HyperOS security suite |
| Additional Features | Glyph Bar (45 LEDs), Essential Key, Vapor Chamber cooling | Built-in active cooling fan, 6000mm² vapor chamber |
| Box Contents | ||
| In the Box | Phone (4b), USB-C cable, SIM ejector tool, Protective case | Redmi K90 Ultra, 100W charger, USB-C cable, Case, Ejector tool |
| Availability | ||
| Availability | Global, available via Nothing official website and retail partners | China (Global availability varies) |
| Official Website | https://ph.nothing.tech/ | mi.com |