Unihertz 8849 Tank 4 vs Xiaomi 15 Ultra
Unihertz
8849 Tank 4
Xiaomi
15 Ultra
At a glance
- Brand
- Unihertz
- Xiaomi
- Release date
- October 2025, 8 months ago
- February 2025, 1 years 4 months ago
- AnTuTu
- 711.190 Antutu v10 Overall performance better than 78% of devices
- 2.966.580 Antutu v11 Overall performance better than 98% of devices
- Launch price
- —
- € 1,499.00 ($ 1,754.98)
Display
- Size
- 6.78"
- 6.73"
- Resolution
- 1200 x 2650 px QHD
- 1440 x 3200 px WQHD+
- Type
- AMOLED
- AMOLED
- Density
- 429 ppi Very high density
- 521 ppi Very high density
- Aspect ratio
- 21:9
- 20:9
- 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, 1920 Hz PWM, TÜV Rheinland Flicker-free Certified, TÜV Low Blue Light, Refresh rate 120 Hz, Variable refresh rate 1 Hz, Touch sampling rate 300 Hz, Peak brightness - 3200 cd/m², 8000000:1 contrast ratio, Always-On Display, TÜV Rheinland Eye Comfort Certification, HDR10+, DC dimming, 12 Bits panel (10-bit +2-bit FRC), Dolby Vision, Scratch resistant, Dragontrail Pro glass, Corning Gorilla Glass Victus 2, Xiaomi Longjing Glass, Capacitive, Multi-touch, Frameless, LTPO (Low Temperature PolySilicon oxide)
Performance
- Chipset
- MediaTek Dimensity 7300 Ultra
- Qualcomm Snapdragon 8 Elite
- CPU
- 4xCortex A78 2.5GHz + 4xCortex A55 2.0GHz
- 2x4.32 GHz Oryon V2 Phoenix L+ 6x3.53 GHz Oryon V2 Phoenix M
- CPU type
- Octa-Core
- Octa-Core
- Process
- 4 nm
- 3 nm
- Frequency
- 2.5 GHz
- 4.32 GHz
- GPU
- Mali-G615 MC2
- Adreno 830
- RAM
- 12 GB
- 16 GB
- RAM type
- RAM LPDDR5X
- RAM LPDDR5X
- 64-bit
- Yes
- Yes
Rear camera
- Resolution
- 50 Mpx
- 50 Mpx
- Aperture
- ƒ/ 1.88
- ƒ/ 1.6
- Sensor
- Samsung GN1
- Sony LYT-900
- Pixel size
- 1.00 µm
- 1.60 µm
- Sensor size
- 1/1.31"
- 1"
- Flash
- Dual LED
- Dual LED
- Optical stabilization
- No
- Yes
- Slow motion
- No, 30 fps
- Yes, 1920 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
- Tracking AF, Flicker sensor, Noise reduction, Time-Lapse, 4K Video, 8K Video, Digital zoom, Optical zoom, Quadruple camera, Digital image stabilization, Optical Stabilization (OIS), Ultra stable video, Autofocus, Touch focus, Continuous autofocus, Manual focus, Phase detection autofocus (PDAF), Laser autofocus (LAF), Continuous shooting, Geotagging, Panorama, HDR, Face detection, White balance settings, ISO settings, Exposure compensation, Scene mode, Self-timer, Night Mode, RAW 14 bits
Front camera
- Resolution
- 32 Mpx
- 32 Mpx
- Aperture
- ƒ/ 2.25
- ƒ/ 2.0
- Sensor
- Samsung S5KGD1
- Omnivision OV32B
- Pixel size
- 0.80 µm
- 0.70 µm
Battery
- Capacity
- 11600 mAh
- 5410 mAh
- Type
- Li-Polymer
- Si-Carbon Li-Ion
- Fast charge
- Yes , 66.0W
- Yes , 90.0W
- Charge cycles
- 1000 cycles
- 1000 cycles
- Runtime
- ~ 105h
- ~ 59h
- Features
- Non-removable
- Wireless charging, Reverse charging, Non-removable
- Wireless charging
- —
- 80W wireless charging, 10W reverse charging
Storage
- Capacity
- 512 GB
- 512 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
- 75.3 mm 161.3 mm 9.4 mm Print 3D Model
- Weight
- 538 g
- 226 g
- Materials
- Polycarbonate
- Aluminium alloy , Ceramics , Titanium
- Colors
- Black
- Black White Silver
- Water/dust resistance
- IP68, MIL-STD-810H
- IP68, IP69
- Drop resistance
- Class A B C D E 90 drops without defects
- Class A B C D E 90 drops without defects
- Repairability
- Class A B C D E
- Class A B C D E
- Usable surface
- 75 %
- 90 %
Software
- Operating system
- Android 15 Android 15
- Android 15 HyperOS 2.X (Android 15)
- Google services
- With Google Mobile Services
- With Google Mobile Services
- Updates
- —
- OS updates: 4 years, Security updates: 7 years
Connectivity
- SIM
- Dual SIM Dual Standby (Nano SIM + Nano SIM)
- Dual SIM Dual Standby (Nano SIM + Nano SIM / eSIM)
- Bluetooth
- Bluetooth 5.3 LELow energy consumption
- Bluetooth 6.0 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), OBEX (OBject EXchange), APT-x, LDAC, SBC, AAC, Apt-x Adaptive
- 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), GLONASS (L1), 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), n2 (1900 PCS), n3 (1800), n5 (850), n7 (2600), n8 (900), n12 (700), n20 (800), n25 (1900), n26 (850), n28b (700), n28a (700), n38 (2600), n40 (2300), n41 (2500), n48 (3500), n66 (1700), n71 (600), n75 (1500), n77 (3700), n78 (3500), n79 (4700), 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), 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), B32 (1500), B38 (TDD 2600), B39 (TDD 1900), B40 (TDD 2300), B41 (TDD 2500), B42 (TDD 3500), B48 (TDD 3600), B66 (1700/2100), B71 (600)
- 3G
- B1 (2100), B2 (1900), B4 (1700/2100 AWS A-F), B5 (850), B6 (800), B8 (900), B19 (800)
- B1 (2100), B2 (1900), 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)
- B2 (1900), B3 (1800), B5 (850), B8 (900)
Sensors & security
- Fingerprint
- Yes, on the side
- Yes, in screen
- Accelerometer
- Yes
- Yes
- Gyroscope
- Yes
- Yes
- Proximity
- Yes
- Yes
- Light sensor
- Yes
- Yes
- Barometer
- Yes
- Yes
- Compass
- Yes
- —
- Cooling system
- No
- Yes
- Audio
- Noise cancellation microphone, 2 microphones
- Dolby Atmos, Hi-Res Audio, Stereo Speakers, 4 microphones
