Apple iPhone 6s vs vivo X21 UD

Price Comparison (India)

Manufacturer
Apple	vivo
Announced
September 2015	March 2018
Status
Available - September 2015	Coming Soon - March 2018
Price
Rs. 41,999 ($617.63) [Similarly Priced]	Rs. 29,900 ($450.00) [Similarly Priced]
Colors
Space Gray, Silver, Gold, Rose Gold	Black, Aurora White, Ruby Red
Form Factor
Candybar	Candybar
Dimension
138.3 x 67.1 x 7.1 mm (5.44 x 2.64 x 0.28 in)	154.5 x 74.8 x 7.4 mm (6.08 x 2.94 x 0.29 in)
Weight
143 g (5.04 oz)	156.2 g (5.5.0.07 oz)
SIM Type
-	Hybrid Dual SIM (Nano-SIM, dual stand-by)
2G Network
GSM 850 / 900 / 1800 / 1900 CDMA 800 / 1700 / 1900 / 2100	GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA 800 & TD-SCDMA
3G Network
HSDPA 850 / 900 / 1700 / 1900 / 2100 CDMA2000 1xEV-DO	HSDPA 850 / 900 / 1900 / 2100
4G Network
LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 13(700), 17(700), 18(800), 19(800), 20(800), 25(1900), 26(850), 28(700), 29(700) - A1688 LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(	LTE band 1(2100), 2(1900), 3(1800), 5(850), 8(900), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500)
SAR US
1.14 W/kg (head) 1.14 W/kg (body)	- W/kg (head) - W/kg (body)
SAR EU
0.87 W/kg (head) 0.98 W/kg (body)	- W/kg (head) - W/kg (body)
Messaging
SMS, MMS, Push Mail, EMail, IM	SMS, MMS, Push Mail, EMail
Build Features
- Fingerprint sensor (TouchID v2) - 3D Touch display - Apple Pay (Visa, MasterCard, AMEX certified)	- Fingerprint Sensor
Notification LED
-	Yes

OS
iOS 9	Android 8.1 (Oreo)
User Interface
-	FunTouch OS 4.0
Processor
2 GHz Dual-core, Apple A9 [Similar]	Octa-core (4x2.2 GHz Kryo 260 & 4x1.8 GHz Kryo 260), Qualcomm SDM660 Snapdragon 660 [Similar]
GPU
-	Adreno 512 [Similar]
RAM
2 GB [Browse Similar]	6 GB [Browse Similar]
Internal Memory
16/64/128 GB	128 GB
External Memory
No	microSD, up to 256 GB (uses SIM 2 slot)

Type
LED-backlit IPS LCD, Capacitive Touchscreen, Ion-Strengthened Glass, Oleophobic Coating	Super AMOLED Capacitive Touchscreen
Colors
16M colors	16M colors
Size
4.7 inches [Similar]	6.28 inches [Similar]
Resolution
750 x 1334 pixels (326 ppi)	1080 x 2280 pixels (402 ppi)
Screen-to-Body Ratio
65.45%	85.06%
Multi-Touch

Rear Camera
12 MP, 4608 x 2592 pixels [Similar]	Dual 12 MP + 5 MP [Similar]
Flash
Real-tone Flash	LED Flash
Features
Phase-Detection AutoFocus, Geo-tagging, Simultaneous HD Video And Image Recording, Touch Focus, Face/smile Detection, HDR (Photo/Panorama)	Phase Detection Autofocus, f/1.8 + f/2.4 aperture, Dual Pixel PDAF, 1/2.5", 1.4 µm, Geo-tagging, Touch Focus, Face Detection, HDR, Panorama
Video
2160p@30fps, 1080p@60fps, 720p@240fps	1080p@30fps
Front Camera
5 MP, 1080p@30fps, 720p@240fps [Similar]	12 MP, f/2.0, 1080p [Similar]

GPRS
Yes	Yes
Edge
Yes	Yes
3G
HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps, EV-DO Rev.A 3.1 Mbps	HSPA, LTE, 4G VoLTE
Bluetooth
v4.1, A2DP, LE	5.0, A2DP, LE
Wi-Fi
Wi-Fi 802.11 a/b/g/n/ac, dual-band, hotspot	Wi-Fi 802.11 a/b/g/n/ac, dual-band, WiFi Direct, hotspot
USB
v2.0, reversible connector	microUSB 2.0, USB On-The-Go
GPS
Yes, with A-GPS, GLONASS	Yes, with A-GPS, GLONASS
Browser
HTML5 (Safari)	HTML5