Oukitel C51 vs Vivo iQOO 15 Ultra

At a glance

Brand: Oukitel; vivo
Release date: May 2024, 2 years 1 months ago; February 2026, 4 months ago
AnTuTu: 240.000 Antutu v10 Overall performance better than 57% of devices; 4.518.403 Antutu v11 Overall performance better than 100% of devices
Launch price: —; CN¥ 5,699.00 ($ 832.57)

Size: 6.8"; 6.85"
Resolution: 720 x 1600 px HD+; 1440 x 3168 px WQHD+
Type: LCD IPS; AMOLED Samsung
Density: 258 ppi Medium Density; 508 ppi Very high density
Aspect ratio: 20:9; 20:9
Features: Water Drop Notch, Refresh rate 90 Hz, 2.5D curved glass screen, Corning Gorilla Glass 5, Capacitive, Multi-touch, Frameless; Hole-punch Notch, SGS Certified, TÜV Rheinland Flicker-free Certified, 2160 Hz PWM, TÜV Low Blue Light, 1-144 Hz refresh rate, Refresh rate 144 Hz, Touch sampling rate 480 Hz, Brightnes 1000 cd/m² (typ), Max brightness HBM - 2600 cd/m², Peak brightness - 8000 cd/m², 8000000:1 contrast ratio, TÜV Rheinland Eye Comfort Certification, HDR10+, DCI-P3, DC dimming, 10 Bits panel, Dolby Vision, Scratch resistant, Capacitive, Multi-touch, Frameless, LTPO (Low Temperature PolySilicon oxide)

Chipset: Unisoc Tiger T606; Qualcomm Snapdragon 8 Elite Gen 5
CPU: 2x1.6 GHz Cortex A75 + 6x1.6 GHz Cortex A55; 2x4.61 GHz ARM + 6x3.63 GHz ARM
CPU type: Octa-Core; Octa-Core
Process: 12 nm; 3 nm
Frequency: 1.6 GHz; 4.61 GHz
GPU: ARM Mali-G57; Adreno 840 1.2 GHz
RAM: 6 GB; 16 GB
RAM type: LPDDR4X RAM; RAM LPDDR5X
64-bit: Yes; Yes

Resolution: 13 Mpx; 50 Mpx
Aperture: Unknow; ƒ/ 1.88
Flash: LED; Quad LED
Optical stabilization: No; Yes
Slow motion: No, 30 fps; Yes, 960 fps
Features: Digital zoom, Autofocus, Touch focus, Continuous shooting, Geotagging, Panorama, HDR, Face detection, White balance settings, ISO settings, Exposure compensation, Scene mode, Self-timer; UIS, Flicker sensor, Noise reduction, Time-Lapse, 4K Video, 8K Video, Digital zoom, Optical zoom, Triple camera, Digital image stabilization, Optical Stabilization (OIS), Autofocus, Touch focus, 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, RAW, Night Mode
Sensor: —; Sony IMX921
Pixel size: —; 1.00 µm
Sensor size: —; 1/1.56"

Dimensions: 76.7 mm 167.2 mm 8.9 mm Print 3D Model; 76.8 mm 163.6 mm 8.7 mm Print 3D Model
Weight: 205 g; 227 g
Materials: Plastic; Glass , Aluminium
Colors: Black Blue Purple; Blue Gray
Drop resistance: Class A B C D E 270 drops without defects; —
Repairability: Class A B C D E; —
Usable surface: 87 %; 90 %
Water/dust resistance: —; IP68

Operating system: Android 13 Tiramisu Android 13; Android 16 OriginOS 6 (Android 16)
Google services: With Google Mobile Services; Without Google Mobile services
Updates: —; OS updates: 5 years, Security updates: 5 years

SIM: Dual SIM Dual Standby (Nano SIM + Nano SIM); Dual SIM Dual Standby (Nano SIM + Nano SIM)
Bluetooth: Bluetooth 5.1; Bluetooth 5.4 LELow energy consumption
Bluetooth profiles: A2DP (Advanced Audio Distribution Profile); 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, Galileo, GPS (L1+L5), BeiDou (B1), Galileo (E1+E5a), BeiDou (B2), QZSS (L1 + L5), Galileo (E1+E5a+E5b)

4G LTE: B1 (2100), B3 (1800), B7 (2600), B8 (900), B19 (800), B20 (800), B38 (TDD 2600), B40 (TDD 2300), B41 (TDD 2500); B1 (2100), B2 (1900), B3 (1800), B4 (1700/2100 AWS 1), B5 (850), B7 (2600), B8 (900), B12 (700), B17 (700), B18 (800), B19 (800), B20 (800), B25 (1900+), B26 (850), B28b (700), B28a (700), B32 (1500), B34 (TDD 2100), B38 (TDD 2600), B39 (TDD 1900), B40 (TDD 2300), B41 (TDD 2500), B42 (TDD 3500), B43 (TDD 3700), B48 (TDD 3600), B66 (1700/2100)
3G: B1 (2100), B8 (900); B1 (2100), B2 (1900), B4 (1700/2100 AWS A-F), B5 (850), B6 (800), B8 (900), B19 (800)
2G: B2 (1900), B3 (1800), B5 (850), B8 (900); B2 (1900), B3 (1800), B5 (850), B8 (900)
5G: —; n1 (2100), n2 (1900 PCS), n3 (1800), n5 (850), n7 (2600), n8 (900), n12 (700), n18 (850), n20 (800), n25 (1900), n26 (850), n28b (700), n28a (700), n38 (2600), n40 (2300), n41 (2500), n48 (3500), n66 (1700), n75 (1500), n77 (3700), n78 (3500), n80 (1800), n81 (900), n83A (700), n83B (700), n84 (2100)