Ulefone Armor 28 Ultra vs Xiaomi Redmi K90
Ulefone
Armor 28 Ultra
Xiaomi
Redmi K90
At a glance
- Brand
- Ulefone
- Xiaomi
- Release date
- September 2024, 1 years 9 months ago
- October 2025, 8 months ago
- AnTuTu
- 2.348.416 Antutu v11 Overall performance better than 96% of devices
- 2.920.000 Antutu v10 Overall performance better than 97% of devices
- Launch price
- —
- CN¥ 2,599.00 ($ 380.18)
Display
- Size
- 6.67"
- 6.59"
- Resolution
- 1080 x 2400 px FHD+
- 1156 x 2510 px FHD+
- Type
- AMOLED
- Oled
- Density
- 395 ppi High Density
- 419 ppi Very high density
- Aspect ratio
- 20:9
- 19.5:9
- Features
- Hole-punch Notch, Refresh rate 120 Hz, Touch sampling rate 480 Hz, Peak brightness - 2200 cd/m², HDR10, DCI-P3, DC dimming, Scratch resistant, Corning Gorilla Glass Victus, 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
- MediaTek Dimensity 9300+
- Qualcomm Snapdragon 8 Elite Extreme Edition
- CPU
- 1xCortex X4 3,4GHZ + 3xCortex X4 2,85GHZ + 4xCortex A720 2GHZ
- 2x4.47 GHz Oryon V2 Phoenix L+ 6x3.53 GHz Oryon V2 Phoenix M
- CPU type
- Octa-Core
- Octa-Core
- Process
- 4 nm
- 3 nm
- Frequency
- 3.25 GHz
- 4.47 GHz
- GPU
- Immortalis-G720 MC12 1300MHz
- Adreno 830
- RAM
- 16 GB
- 12 GB
- 64-bit
- Yes
- Yes
- RAM type
- —
- RAM LPDDR5X
Rear camera
- Resolution
- 50 Mpx
- 50 Mpx
- Aperture
- ƒ/ 1.9
- ƒ/ 1.88
- Sensor
- Sony IMX989
- Omnivision OV50 Light Fusion 800
- Pixel size
- 0.80 µm
- 1.00 µm
- Sensor size
- 1"
- 1/1.55"
- Flash
- Quad LED
- LED
- Optical stabilization
- No
- Yes
- Slow motion
- Yes, 120 fps
- Yes, 240 fps
- Features
- Cinematic Mode, Flicker sensor, Noise reduction, Digital zoom, Triple camera, Digital image stabilization, Autofocus, Touch focus, Manual focus, Continuous shooting, Geotagging, Panorama, HDR, Face detection, White balance settings, ISO settings, Exposure compensation, Scene mode, Self-timer, Night Mode, Night Vision
- 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
- 50 Mpx
- 20 Mpx
- Aperture
- Unknow
- ƒ/ 2.0
- Sensor
- Samsung S5KJN1
- Omnivision OV20B
- Pixel size
- 0.64 µm
- 0.80 µm
Battery
- Capacity
- 10600 mAh
- 7100 mAh
- Type
- Lithium
- Li-Ion
- Fast charge
- Yes , 120.0W
- Yes , 100.0W
- Wireless charging
- Wireless charging 50w
- 22.5W Reverse wire charging
- Charge cycles
- 1000 cycles
- —
- Runtime
- ~ 113h
- —
- Features
- Wireless charging, Non-removable
- Reverse charging, Non-removable
Storage
- Capacity
- 1 TB
- 256 GB
- Type
- UFS Storage 4.0
- UFS Storage 4.1
- SD slot
- Yes , Independent SD slot
- No
Body
- Dimensions
- 83.6 mm 174.2 mm 19.4 mm Print 3D Model
- 75.2 mm 157.5 mm 8.0 mm Print 3D Model
- Weight
- 450 g
- 206 g
- Materials
- Rugged Smartphone, Polycarbonate
- Aluminium alloy , Glass
- Colors
- Black
- Black White Blue Violet
- Water/dust resistance
- IP68, IP69 , MIL-STD-810H
- IP68, IP69
- Drop resistance
- Class A B C D E 270 drops without defects
- —
- Repairability
- Class A B C D E
- —
- Usable surface
- 73 %
- 89 %
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 5.4 LELow energy consumption
- Bluetooth 5.4 LELow energy consumption
- Bluetooth profiles
- A2DP (Advanced Audio Distribution Profile), LE (Low Energy), LDAC, SBC, AAC, LHDC
- 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, WiFi 6 (802.11ax) , WiFi 7 (802.11be)
- 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, Wi-Fi MiMO
- 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, QZSS, Galileo, GPS (L1+L5), GLONASS (L1), BeiDou (B1), Galileo (E1+E5a), BeiDou (B2), Galileo (E1+E5a+E5b)
- GPS, A-GPS, GLONASS, Beidou, QZSS, GPS (L1+L5), BeiDou (B1), Galileo (E1+E5a), BeiDou (B2), NavIC System, QZSS (L1 + L5)
Networks
- 5G
- n1 (2100), n3 (1800), n5 (850), n7 (2600), n8 (900), n20 (800), n28b (700), n28a (700), n38 (2600), n40 (2300), n41 (2500), n66 (1700), n77 (3700), n78 (3500)
- 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)
- 4G LTE
- B1 (2100), B3 (1800), B4 (1700/2100 AWS 1), B5 (850), B7 (2600), B8 (900), B12 (700), B13 (700), B17 (700), B18 (800), B19 (800), B20 (800), B26 (850), B28b (700), B28a (700), B38 (TDD 2600), B39 (TDD 1900), 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), B4 (1700/2100 AWS A-F), B5 (850), B6 (800), B8 (900), B19 (800)
- B1 (2100), B4 (1700/2100 AWS A-F), B5 (850), B6 (800), B8 (900), B19 (800)
- 2G
- CDMA BC0 (800), B3 (1800), B5 (850), B8 (900)
- B3 (1800), B5 (850), B8 (900)
Sensors & security
- Fingerprint
- Yes, on the side
- Yes, in screen
- Accelerometer
- Yes
- Yes
- Gyroscope
- Yes
- Yes
- Proximity
- Yes
- —
- Light sensor
- Yes
- Yes
- Barometer
- Yes
- —
- Cooling system
- Yes
- Yes
- Audio
- Stereo Speakers
- Dolby Atmos, Noise cancellation microphone, Stereo Speakers, 3 microphones
