Unihertz 8849 Tank 4 vs Xiaomi Redmi K90 Pro Max
Unihertz
8849 Tank 4
Xiaomi
Redmi K90 Pro Max
At a glance
- Brand
- Unihertz
- Xiaomi
- Release date
- October 2025, 8 months ago
- October 2025, 8 months ago
- AnTuTu
- 711.190 Antutu v10 Overall performance better than 78% of devices
- 4.027.702 Antutu v11 Overall performance better than 99% of devices
- Launch price
- —
- CN¥ 3,999.00 ($ 584.21)
Display
- Size
- 6.78"
- 6.9"
- Resolution
- 1200 x 2650 px QHD
- 1200 x 2608 px QHD
- Type
- AMOLED
- Oled
- Density
- 429 ppi Very high density
- 416 ppi Very high density
- Aspect ratio
- 21:9
- 19.5:9
- Features
- Hole-punch Notch, Youji Glass - 1.1 mm, Refresh rate 120 Hz, Scratch resistant, Capacitive, Multi-touch, In-cell
- 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 7300 Ultra
- Qualcomm Snapdragon 8 Elite Gen 5
- CPU
- 4xCortex A78 2.5GHz + 4xCortex A55 2.0GHz
- 2x4.61 GHz ARM + 6x3.63 GHz ARM
- CPU type
- Octa-Core
- Octa-Core
- Process
- 4 nm
- 3 nm
- Frequency
- 2.5 GHz
- 4.61 GHz
- GPU
- Mali-G615 MC2
- Adreno 840 1.2 GHz
- RAM
- 12 GB
- 12 GB
- RAM type
- RAM LPDDR5X
- RAM LPDDR5X
- 64-bit
- Yes
- Yes
Rear camera
- Resolution
- 50 Mpx
- 50 Mpx
- Aperture
- ƒ/ 1.88
- ƒ/ 1.88
- Sensor
- Samsung GN1
- Omnivision 950 LightHunter
- Pixel size
- 1.00 µm
- 1.00 µm
- Sensor size
- 1/1.31"
- 1/1.3"
- Flash
- Dual LED
- LED
- Optical stabilization
- No
- Yes
- Slow motion
- No, 30 fps
- Yes, 240 fps
- Features
- Digital zoom, Triple camera, Digital image stabilization, Autofocus, Touch focus, Phase detection autofocus (PDAF), Continuous shooting, Geotagging, Panorama, HDR, Face detection, White balance settings, ISO settings, Exposure compensation, Scene mode, Self-timer, Night Vision
- 4K Video, 8K 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
- 32 Mpx
- 32 Mpx
- Aperture
- ƒ/ 2.25
- ƒ/ 2.0
- Sensor
- Samsung S5KGD1
- Omnivision OV32D
- Pixel size
- 0.80 µm
- 0.61 µm
Battery
- Capacity
- 11600 mAh
- 7560 mAh
- Type
- Li-Polymer
- Li-Ion
- Fast charge
- Yes , 66.0W
- Yes , 100.0W
- Charge cycles
- 1000 cycles
- —
- Runtime
- ~ 105h
- —
- Features
- Non-removable
- Wireless charging, Reverse charging, Non-removable
- Wireless charging
- —
- 22.5W Reverse wire charging, 50W wireless charging
Storage
- Capacity
- 512 GB
- 256 GB
- Type
- UFS Storage 4.0
- UFS Storage 4.1
- SD slot
- Yes , Independent SD slot
- No
Body
- Dimensions
- 85.4 mm 174.3 mm 23.9 mm Print 3D Model
- 77.8 mm 163.3 mm 7.9 mm Print 3D Model
- Weight
- 538 g
- 218 g
- Materials
- Polycarbonate
- Aluminium alloy , Glass
- Colors
- Black
- Black White Blue Silver
- Water/dust resistance
- IP68, MIL-STD-810H
- IP68, IP69
- Drop resistance
- Class A B C D E 90 drops without defects
- —
- Repairability
- Class A B C D E
- —
- Usable surface
- 75 %
- 91 %
Software
- Operating system
- Android 15 Android 15
- 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 5.3 LELow energy consumption
- Bluetooth 5.4 LELow energy consumption
- Bluetooth profiles
- A2DP (Advanced Audio Distribution Profile), EDR (Enhanced Data Rate), LE (Low Energy), HS
- 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)
- 802.11a , 802.11b , 802.11g , 802.11n , 802.11n 5GHz , 802.11ac, WiFi 6 (802.11ax) , WiFi 7 (802.11be)
- Wi-Fi features
- 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
- 5G
- n1 (2100), n2 (1900 PCS), n3 (1800), n5 (850), n7 (2600), n8 (900), n12 (700), n20 (800), n25 (1900), 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), n18 (850), n26 (850), n28a (700), n38 (2600), n40 (2300), n41 (2500), n48 (3500), n77 (3700), n78 (3500), n80 (1800), n84 (2100)
- 4G LTE
- B1 (2100), B2 (1900), 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), B25 (1900+), B26 (850), B28b (700), B28a (700), B34 (TDD 2100), 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), B18 (800), B19 (800), B26 (850), 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), CDMA BC1 (1900), B2 (1900), 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
- —
- Compass
- Yes
- —
- Cooling system
- No
- Yes
- Audio
- Noise cancellation microphone, 2 microphones
- Dolby Atmos, Noise cancellation microphone, Stereo Speakers, 3 microphones
