Product
Vivo X21i
Vivo X21i
Apple iPhone XR
Apple iPhone XR
Battery
Charging 18W wired 15W wired, PD2.0, 50% in 30 minWireless (Qi)
Type Li-Ion 3425 mAh, non-removable Li-Ion 2942 mAh, non-removable (11.16 Wh)
Body
Build - Glass front (Corning-made glass), glass back (Corning-made glass), aluminum frame (7000 series)
Dimensions 154.4 x 75 x 7 mm (6.08 x 2.95 x 0.28 in) 150.9 x 75.7 x 8.3 mm (5.94 x 2.98 x 0.33 in)
SIM Nano-SIM + Nano-SIM Nano-SIM + eSIMNano-SIM + Nano-SIM (China)
Weight 159 g (5.61 oz) 194 g (6.84 oz)
  - IP67 dust/water resistant (up to 1m for 30 min)Apple Pay (Visa, MasterCard, AMEX certified)
Comms
Bluetooth 5.0, A2DP, LE 5.0, A2DP, LE
NFC No Yes
Positioning GPS, GLONASS GPS, GLONASS, GALILEO, QZSS
Radio FM radio No
USB microUSB 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 2280 pixels, 19:9 ratio (~402 ppi density) 828 x 1792 pixels, 19.5:9 ratio (~326 ppi density)
Size 6.28 inches, 98.4 cm2 (~85.0% screen-to-body ratio) 6.1 inches, 90.3 cm2 (~79.0% screen-to-body ratio)
Type Super AMOLED Liquid Retina IPS LCD, 625 nits (HBM)
Features
Sensors Fingerprint (rear-mounted), accelerometer, proximity, compass Face ID, accelerometer, gyro, proximity, compass, barometer
Launch
Announced 2018, May. Released 2018, May 2018, September 12. Released 2018, October 26
Status Discontinued Discontinued
Main Camera
Dual 12 MP, f/1.8, 1/2.55", 1.4µm, dual pixel PDAF 5 MP, f/2.4, (depth) -
Features LED flash, HDR, panorama Quad-LED dual-tone flash, HDR (photo/panorama)
Single - 12 MP, f/1.8, 26mm (wide), 1/2.55", 1.4µm, PDAF, OIS
Video 1080p@30fps 4K@24/30/60fps, 1080p@30/60/120/240fps, HDR, stereo sound rec.
Memory
Card slot microSDXC (uses shared SIM slot) No
Internal 64GB 6GB RAM, 128GB 4GB RAM 64GB 3GB RAM, 128GB 3GB RAM, 256GB 3GB RAM
  eMMC 5.1 NVMe
Misc
Colors Black, Aurora White, Ruby Red, Night Purple Black, Red, Yellow, Blue, Coral, White
Models X21i A A2105, A1984, A2107, A2108, A2106, iPhone11,8
SAR - 1.13 W/kg (head)     1.16 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 / 2100 HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands 1, 3, 4, 5, 8, 38, 39, 40, 41 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 19, 20, 25, 26, 29, 30, 32, 34, 38, 39, 40, 41, 66, 71
Speed HSPA, LTE HSPA, LTE, EV-DO Rev.A 3.1 Mbps
Technology GSM / CDMA / HSPA / LTE GSM / CDMA / HSPA / EVDO / LTE
  CDMA 800 & TD-SCDMA CDMA2000 1xEV-DO
Platform
Chipset Mediatek MT6771 Helio P60 (12 nm) Apple A12 Bionic (7 nm)
CPU Octa-core (4x2.0 GHz Cortex-A73 & 4x2.0 GHz Cortex-A53) Hexa-core (2x2.5 GHz Vortex + 4x1.6 GHz Tempest)
GPU Mali-G72 MP3 Apple GPU (4-core graphics)
OS Android 8.1 (Oreo), Funtouch 4 iOS 12, upgradable to iOS 18.5
Selfie camera
Features - HDR
Single 24 MP, f/2.0, 26mm (wide), 1/2.8", 0.9µm 7 MP, f/2.2, 32mm (standard)SL 3D, (depth/biometrics sensor)
Video 1080p@60fps
Sound
3.5mm jack Yes No
Loudspeaker Yes Yes, with stereo speakers
  32-bit/192kHz Hi-Res audio -
Tests
Battery (old) - Endurance rating 78h
Performance - AnTuTu: 341196 (v7), 422465 (v8)GeekBench: 11437 (v4.4), 2690 (v5.1)GFXBench: 58fps (ES 3.1 onscreen)