Ulefone Note 21 vs Xiaomi Redmi K90
Ulefone
Note 21
Xiaomi
Redmi K90
At a glance
- Brand
- Ulefone
- Xiaomi
- Release date
- January 2025, 1 years 5 months ago
- October 2025, 8 months ago
- AnTuTu
- 251.000 Antutu v10 Overall performance better than 59% of devices
- 2.920.000 Antutu v10 Overall performance better than 97% of devices
- Launch price
- —
- CN¥ 2,599.00 ($ 380.18)
Display
- Size
- 6.56"
- 6.59"
- Resolution
- 720 x 1612 px HD+
- 1156 x 2510 px FHD+
- Type
- LCD IPS
- Oled
- Density
- 269 ppi Medium Density
- 419 ppi Very high density
- Aspect ratio
- 20:9
- 19.5:9
- Features
- Water Drop Notch, Refresh rate 90 Hz, Brightnes 450 cd/m² (typ), 2.5D curved glass screen, Capacitive, Multi-touch, Frameless
- Hole-punch Notch, 1-120 Hz refresh rate, TUV Rheinland Low Blue Light, TÜV Rheinland Flicker-free Certified, TÜV Rheinland Full Care Display 3.0 Cer, Refresh rate 120 Hz, Touch sampling rate 480 Hz, Peak brightness - 3500 cd/m², Always-On Display, TÜV Rheinland Eye Comfort Certification, HDR10+, DCI-P3, DC dimming, sRGB standard, 12 Bits panel (10-bit +2-bit FRC), Dolby Vision, Scratch resistant, Capacitive, Multi-touch, Frameless, LTPO (Low Temperature PolySilicon oxide)
Performance
- Chipset
- Unisoc Tiger T606
- Qualcomm Snapdragon 8 Elite Extreme Edition
- CPU
- 2x1.6 GHz Cortex A75 + 6x1.6 GHz Cortex A55
- 2x4.47 GHz Oryon V2 Phoenix L+ 6x3.53 GHz Oryon V2 Phoenix M
- CPU type
- Octa-Core
- Octa-Core
- Process
- 12 nm
- 3 nm
- Frequency
- 1.6 GHz
- 4.47 GHz
- GPU
- ARM Mali-G57
- Adreno 830
- RAM
- 4 GB
- 12 GB
- RAM type
- LPDDR4X RAM
- RAM LPDDR5X
- 64-bit
- Yes
- Yes
Rear camera
- Resolution
- 13 Mpx
- 50 Mpx
- Aperture
- ƒ/ 2.2
- ƒ/ 1.88
- Sensor
- Samsung S5K3L6
- Omnivision OV50 Light Fusion 800
- Pixel size
- 1.12 µm
- 1.00 µm
- Sensor size
- 1/3.1"
- 1/1.55"
- Flash
- LED
- LED
- Optical stabilization
- No
- Yes
- Slow motion
- No, 30 fps
- Yes, 240 fps
- Features
- Digital zoom, Dual camera, Digital image stabilization, Autofocus, Touch focus, Continuous shooting, Geotagging, HDR, Face detection, White balance settings, ISO settings, Exposure compensation, Scene mode, Self-timer
- 4K Video, Digital zoom, Triple camera, Digital image stabilization, Optical Stabilization (OIS), Ultra stable video, Autofocus, Touch focus, Continuous autofocus, Manual focus, Phase detection autofocus (PDAF), Dual front camera, Continuous shooting, Geotagging, Panorama, HDR, Face detection, White balance settings, ISO settings, Exposure compensation, Scene mode, Self-timer, RAW, Night Mode
Front camera
- Resolution
- 8 Mpx
- 20 Mpx
- Aperture
- Unknow
- ƒ/ 2.0
- Sensor
- —
- Omnivision OV20B
- Pixel size
- —
- 0.80 µm
Battery
- Capacity
- 5000 mAh
- 7100 mAh
- Type
- Li-Polymer
- Li-Ion
- Fast charge
- Yes , 10.0W
- Yes , 100.0W
- Charge cycles
- 1000 cycles
- —
- Runtime
- ~ 47h
- —
- Features
- Non-removable
- Reverse charging, Non-removable
- Wireless charging
- —
- 22.5W Reverse wire charging
Storage
- Capacity
- 128 GB
- 256 GB
- SD slot
- Yes , Slot for SD or second SIM card
- No
- Type
- —
- UFS Storage 4.1
Body
- Dimensions
- 75.2 mm 163.2 mm 9.2 mm Print 3D Model
- 75.2 mm 157.5 mm 8.0 mm Print 3D Model
- Weight
- 196 g
- 206 g
- Materials
- Plastic
- Aluminium alloy , Glass
- Colors
- Black Violet
- Black White Blue Violet
- Drop resistance
- Class A B C D E 113 drops without defects
- —
- Repairability
- Class A B C D E
- —
- Usable surface
- 84 %
- 89 %
- Water/dust resistance
- —
- IP68, IP69
Software
- Operating system
- Android 14 Upside-down cake Android 14
- Android 15 HyperOS 3.X (Android 15)
- Google services
- With Google Mobile Services
- Without Google Mobile services
Connectivity
- SIM
- Dual SIM Dual Standby (Nano SIM + Nano SIM)
- Dual SIM Dual Standby (Nano SIM + Nano SIM)
- Bluetooth
- Bluetooth 5.0 LELow energy consumption
- Bluetooth 5.4 LELow energy consumption
- Bluetooth profiles
- A2DP (Advanced Audio Distribution Profile), HID (Human Interface Profile), LE (Low Energy)
- A2DP (Advanced Audio Distribution Profile), LE (Low Energy), APT-x, LDAC, SBC, AAC
- Wi-Fi
- 802.11a , 802.11b , 802.11g , 802.11n , 802.11n 5GHz , 802.11ac
- 802.11a , 802.11b , 802.11g , 802.11n , 802.11n 5GHz , 802.11ac, WiFi 6 (802.11ax) , WiFi 7 (802.11be)
- Wi-Fi features
- Dual band, Wi-Fi Hotspot, Wi-Fi Direct, Wi-Fi Display
- Dual band, Wi-Fi Hotspot, Wi-Fi Direct, Wi-Fi Display, Wi-Fi MiMO
- USB
- USB Type-C
- USB Type-C
- USB features
- Charging, OTG
- Charging, OTG
- Navigation
- GPS, A-GPS, GLONASS, Beidou, Galileo
- GPS, A-GPS, GLONASS, Beidou, QZSS, GPS (L1+L5), BeiDou (B1), Galileo (E1+E5a), BeiDou (B2), NavIC System, QZSS (L1 + L5)
Networks
- 4G LTE
- B1 (2100), B2 (1900), B3 (1800), B4 (1700/2100 AWS 1), B5 (850), B7 (2600), B8 (900), B12 (700), B17 (700), B19 (800), B20 (800), B26 (850), B28b (700), B28a (700), B38 (TDD 2600), B40 (TDD 2300), B41 (TDD 2500), B66 (1700/2100)
- B1 (2100), B3 (1800), B4 (1700/2100 AWS 1), B5 (850), B7 (2600), B8 (900), B19 (800), B28a (700), B34 (TDD 2100), B38 (TDD 2600), B39 (TDD 1900), B40 (TDD 2300), B41 (TDD 2500), B42 (TDD 3500), B48 (TDD 3600), B66 (1700/2100)
- 3G
- B1 (2100), B2 (1900), B5 (850), B8 (900)
- B1 (2100), B4 (1700/2100 AWS A-F), B5 (850), B6 (800), B8 (900), B19 (800)
- 2G
- B2 (1900), B3 (1800), B5 (850), B8 (900)
- B3 (1800), B5 (850), B8 (900)
- 5G
- —
- n1 (2100), n3 (1800), n5 (850), n7 (2600), n8 (900), n28a (700), n38 (2600), n40 (2300), n41 (2500), n48 (3500), n66 (1700), n77 (3700), n78 (3500)
Sensors & security
- Fingerprint
- Yes, on the side
- Yes, in screen
- Accelerometer
- Yes
- Yes
- Proximity
- Yes
- —
- Light sensor
- Yes
- Yes
- Cooling system
- No
- Yes
- Gyroscope
- —
- Yes
- Audio
- —
- Dolby Atmos, Noise cancellation microphone, Stereo Speakers, 3 microphones
