Product
Vivo X51 5G
Vivo X51 5G
Apple iPhone XS
Apple iPhone XS
Battery
Charging 33W wired, 57% in 30 min 15W wired, PD2.0, 50% in 30 minWireless (Qi)
Type 4315 mAh Li-Ion 2658 mAh, non-removable (10.13 Wh)
Body
Build Glass front, glass back, aluminum frame Glass front (Corning-made glass), glass back (Corning-made glass), stainless steel frame
Dimensions 158.5 x 72.8 x 8 mm (6.24 x 2.87 x 0.31 in) 143.6 x 70.9 x 7.7 mm (5.65 x 2.79 x 0.30 in)
SIM Nano-SIM + Nano-SIM Nano-SIM + eSIM
Weight 181.5 g (6.42 oz) 177 g (6.24 oz)
  - IP68 dust tight and water resistant (immersible up to 2m for 30 min)Apple Pay (Visa, MasterCard, AMEX certified)
Comms
Bluetooth 5.1, A2DP, LE, aptX HD 5.0, A2DP, LE
NFC Yes Yes
Positioning GPS, GLONASS, GALILEO, BDS GPS, GLONASS, GALILEO, QZSS
Radio No No
USB USB Type-C 2.0, OTG Lightning, USB 2.0
WLAN Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct Wi-Fi 802.11 a/b/g/n/ac, dual-band, hotspot
Display
Protection - Scratch-resistant glass
Resolution 1080 x 2376 pixels (~398 ppi density) 1125 x 2436 pixels, 19.5:9 ratio (~458 ppi density)
Size 6.56 inches, 104.6 cm2 (~90.6% screen-to-body ratio) 5.8 inches, 84.4 cm2 (~82.9% screen-to-body ratio)
Type AMOLED, 90Hz, HDR10+ Super Retina OLED, HDR10, Dolby Vision, 625 nits (HBM)
  - 3D Touch
Features
Sensors Fingerprint (under display, optical), accelerometer, gyro, proximity, compass Face ID, accelerometer, gyro, proximity, compass, barometer
Launch
Announced 2020, October 21 2018, September 12. Released 2018, September 21
Status Available. Released 2020, October 23 Discontinued
Main Camera
Dual - 12 MP, f/1.8, 26mm (wide), 1/2.55", 1.4µm, dual pixel PDAF, OIS12 MP, f/2.4, 52mm (telephoto), 1/3.4", 1.0µm, PDAF, OIS, 2x optical zoom
Features Laser AF, color spectrum sensor, Dual-LED dual-tone flash, HDR, panorama Quad-LED dual-tone flash, HDR (photo/panorama)
Quad 48 MP, f/1.6, (wide), PDAF, gimbal OIS 8 MP, f/3.4, 135mm (periscope telephoto), 1/4.0", PDAF, OIS, 5x optical zoom 13 MP, f/2.5, 50mm (telephoto), 1/2.8", 0.8µm, PDAF, 2x optical zoom 8 MP, f/2.2, 120˚, 16mm (ultrawide), 1/4.0", 1.12µm -
Video 4K@30fps, 1080p@30fps, gyro-EIS 4K@24/30/60fps, 1080p@30/60/120/240fps, HDR, stereo sound rec.
Memory
Card slot No No
Internal 256GB 8GB RAM 64GB 4GB RAM, 256GB 4GB RAM, 512GB 4GB RAM
  UFS 2.1 NVMe
Misc
Colors Gray Space Gray, Silver, Gold
Models XE710 A2097, A1920, A2100, A2098, iPhone11,2
SAR - 1.19 W/kg (head)     1.18 W/kg (body)    
SAR EU - 0.99 W/kg (head)     0.99 W/kg (body)    
Network
2G bands GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900
3G bands HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands 1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28, 32, 38, 39, 40, 41, 66 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 19, 20, 25, 26, 28, 29, 30, 32, 34, 38, 39, 40, 41, 46, 66 - A2097
5G bands 1, 3, 7, 8, 28, 38, 41, 77, 78 SA/NSA -
Speed HSPA, LTE, 5G HSPA 42.2/5.76 Mbps, LTE (4CA) Cat16 1024/150 Mbps, EV-DO Rev.A 3.1 Mbps
Technology GSM / CDMA / HSPA / LTE / 5G GSM / CDMA / HSPA / EVDO / LTE
  CDMA 800 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 19, 20, 25, 26, 29, 30, 32, 34, 38, 39, 40, 41, 46, 66, 71 - A1920, A2100
Platform
Chipset Qualcomm SM7250 Snapdragon 765G 5G (7 nm) Apple A12 Bionic (7 nm)
CPU Octa-core (1x2.4 GHz Kryo 475 Prime & 1x2.2 GHz Kryo 475 Gold & 6x1.8 GHz Kryo 475 Silver) Hexa-core (2x2.5 GHz Vortex + 4x1.6 GHz Tempest)
GPU Adreno 620 Apple GPU (4-core graphics)
OS Android 10, Funtouch 10.0 iOS 12, upgradable to iOS 18.5
Selfie camera
Features HDR HDR
Single 32 MP, f/2.5, 26mm (wide), 1/2.8", 0.8µm 7 MP, f/2.2, 32mm (standard)SL 3D, (depth/biometrics sensor)
Video 1080p@30fps 1080p@30/60fps, gyro-EIS
Sound
3.5mm jack No No
Loudspeaker Yes Yes, with stereo speakers
  32-bit/192kHz Hi-Res audio -
Tests
Audio quality - Noise -93.7dB / Crosstalk -82.8dB
Battery (old) - Endurance rating 72h
Camera - Photo / Video
Display - Contrast ratio: Infinite (nominal), 5.171 (sunlight)
Loudspeaker - Voice 71dB / Noise 75dB / Ring 78dB
Performance - AnTuTu: 346379 (v7)GeekBench: 11472 (v4.4)GFXBench: 47fps (ES 3.1 onscreen)