Product
Vivo X21i
Vivo X21i
Apple iPhone 6s Plus
Apple iPhone 6s Plus
Battery
Charging 18W wired -
Stand-by - Up to 384 h (3G)
Talk time - Up to 24 h (3G)
Type Li-Ion 3425 mAh, non-removable Li-Ion 2750 mAh, non-removable (10.45 Wh)
Body
Build - Glass front (Corning-made glass), aluminum back, aluminum frame
Dimensions 154.4 x 75 x 7 mm (6.08 x 2.95 x 0.28 in) 158.2 x 77.9 x 7.3 mm (6.23 x 3.07 x 0.29 in)
SIM Nano-SIM + Nano-SIM Nano-SIM
Weight 159 g (5.61 oz) 192 g (6.77 oz)
- Apple Pay (Visa, MasterCard, AMEX certified)
Comms
Bluetooth 5.0, A2DP, LE 4.2, A2DP, LE
NFC No Yes (Apple Pay only)
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 - Ion-strengthened glass, oleophobic coating
Resolution 1080 x 2280 pixels, 19:9 ratio (~402 ppi density) 1080 x 1920 pixels, 16:9 ratio (~401 ppi density)
Size 6.28 inches, 98.4 cm2 (~85.0% screen-to-body ratio) 5.5 inches, 83.4 cm2 (~67.7% screen-to-body ratio)
Type Super AMOLED IPS LCD
- 3D Touch display
Features
Sensors Fingerprint (rear-mounted), accelerometer, proximity, compass Fingerprint (front-mounted), accelerometer, gyro, proximity, compass, barometer
Launch
Announced 2018, May. Released 2018, May 2015, September 09. Released 2015, September 25
Status Discontinued Discontinued
Main Camera
Dual -
Features LED flash, HDR, panorama Dual-LED dual-tone flash, HDR
Single -
Video 1080p@30fps 4K@30fps, 1080p@60fps, 1080p@120fps, 720p@240fps
Memory
Card slot microSDXC (uses shared SIM slot) No
Internal 64GB 6GB RAM, 128GB 4GB RAM 16GB 2GB RAM, 32GB 2GB RAM, 64GB 2GB RAM, 128GB 2GB RAM
eMMC 5.1 NVMe
Misc
Colors Black, Aurora White, Ruby Red, Night Purple Space Gray, Silver, Gold, Rose Gold
Models X21i A A1634, A1687, A1690, A1699, iPhone8,2
SAR -
SAR EU -
Network
2G bands GSM 850 / 900 / 1800 / 1900 GSM 850 / 900 / 1800 / 1900
3G bands HSDPA 850 / 900 / 2100 HSDPA 850 / 900 / 1700 / 1900 / 2100
4G bands 1, 3, 4, 5, 8, 38, 39, 40, 41 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 29, 30 - A1633
Speed HSPA, LTE HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 300/50 Mbps, EV-DO Rev.A 3.1 Mbps
Technology GSM / CDMA / HSPA / LTE GSM / CDMA / HSPA / EVDO / LTE
CDMA 800 & TD-SCDMA 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 29, 30, 38, 39, 40, 41 - A1634
Platform
Chipset Mediatek MT6771 Helio P60 (12 nm) Apple A9 (14/16 nm - maker dependant)
CPU Octa-core (4x2.0 GHz Cortex-A73 & 4x2.0 GHz Cortex-A53) Dual-core 1.84 GHz Twister
GPU Mali-G72 MP3 PowerVR GT7600 (six-core graphics)
OS Android 8.1 (Oreo), Funtouch 4 iOS 9, upgradable to iOS 15.8.1
Selfie camera
Features - Face detection, HDR, panorama
Single 5 MP, f/2.2, 31mm (standard)
Video 720p@30fps
Sound
3.5mm jack Yes Yes
Loudspeaker Yes Yes
32-bit/192kHz Hi-Res audio 16-bit/44.1kHz audio
Tests
Audio quality - Noise -93.4dB / Crosstalk -71.1dB
Battery (old) - Endurance rating 85h
Camera - Photo / Video
Display - Contrast ratio: 1382:1 (nominal), 3.530 (sunlight)
Loudspeaker - Voice 65dB / Noise 65dB / Ring 64dB
Performance - Basemark OS II 2.0: 2261