Product
Xiaomi Redmi Note 2
Xiaomi Redmi Note 2
Vivo S1
Vivo S1
Battery
Charging 10W wired 18W wired
Music play Up to 46 h -
Stand-by Up to 144 h (3G) -
Talk time Up to 11 h 30 min (3G) -
Type Li-Po 3060 mAh, removable 4500 mAh, non-removable
Body
Build Glass front, plastic back, plastic frame Glass front, plastic back, plastic frame
Dimensions 152 x 76 x 8.3 mm (5.98 x 2.99 x 0.33 in) 159.5 x 75.2 x 8.1 mm (6.28 x 2.96 x 0.32 in)
SIM Dual SIM (Micro-SIM, dual stand-by) Nano-SIM + Nano-SIM
Weight 160 g (5.64 oz) 179 g (6.31 oz)
Comms
Bluetooth 4.0, A2DP, LE 5.0, A2DP, LE
Infrared port Yes -
NFC No No
Positioning GPS, GLONASS, BDS GPS, GLONASS, GALILEO, BDS
Radio Stereo FM radio FM radio
USB microUSB 2.0, OTG microUSB 2.0, OTG
WLAN Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Display
Resolution 1080 x 1920 pixels, 16:9 ratio (~403 ppi density) 1080 x 2340 pixels, 19.5:9 ratio (~404 ppi density)
Size 5.5 inches, 82.6 cm2 (~71.5% screen-to-body ratio) 6.38 inches, 99.9 cm2 (~83.3% screen-to-body ratio)
Type IPS LCD Super AMOLED
Features
Sensors Accelerometer, gyro, proximity, compass Fingerprint (under display, optical), accelerometer, proximity, compass
Launch
Announced 2015, August. Released 2015, August 2019, July 17. Released 2019, July
Status Discontinued Discontinued
Main Camera
Features LED flash, HDR, panorama LED flash, HDR, panorama
Single 13 MP, f/2.2, PDAF -
Triple - 16 MP, f/1.8, (wide), 1/2.8", 1.12µm, PDAF 8 MP, f/2.2, 13mm (ultrawide), 1/4.0", 1.12µm 2 MP, f/2.4, (depth)
Video 1080p@30fps 1080p@30fps
Memory
Card slot microSDXC (dedicated slot) - Chinese version only microSDXC (dedicated slot)
Internal 16GB 2GB RAM (Standard), 32GB 2GB RAM (Prime) 64GB 6GB RAM, 128GB 4GB RAM, 128GB 6GB RAM, 256GB 6GB RAM
  eMMC 5.0 eMMC 5.1
Misc
Colors White, blue, yellow, pink, mint green Diamond Black, Skyline Blue, Cosmic Green
Models 2015051 1907, V1907, 1907_19, V1913A
SAR 0.34 W/kg (head)     0.45 W/kg (body)     -
Network
2G bands GSM 900 / 1800 / 1900 - SIM 1 & SIM 2 GSM 850 / 900 / 1800 / 1900
3G bands HSDPA 850 / 900 / 1900 / 2100 HSDPA 850 / 900 / 2100
4G bands 1, 3, 7, 38, 39, 40, 41 1, 3, 5, 7, 8, 20, 38, 40, 41 - Asia
Speed HSPA, LTE Cat4 150/50 Mbps HSPA 42.2/5.76 Mbps, LTE (2CA) Cat6 300/150 Mbps
Technology GSM / HSPA / LTE GSM / HSPA / LTE
  TD-SCDMA 1, 3, 5, 8, 34, 38, 39, 40, 41 - China
Our Tests
Audio quality Noise -96.1dB / Crosstalk -94.8dB -
Battery (old) Endurance rating 49h -
Camera Photo / Video -
Display Contrast ratio: 953 (nominal), 2.166 (sunlight) -
Loudspeaker Voice 66dB / Noise 66dB / Ring 76dB -
Performance Basemark OS II 2.0: 1063Basemark X: 8518 -
Platform
Chipset Mediatek MT6795 Helio X10 (28 nm) Mediatek MT6768 Helio P65 (12 nm)
CPU Octa-core 2.0 GHz Cortex-A53 - Redmi Note 2Octa-core 2.2 GHz Cortex-A53 - Redmi Note 2 Prime Octa-core (2x2.0 GHz Cortex-A75 & 6x1.7 GHz Cortex-A55)
GPU PowerVR G6200 Mali-G52 MC2
OS Android 5.0 (Lollipop), MIUI 7 Android 9.0 (Pie), Funtouch 9
Selfie camera
Features - HDR
Single 5 MP, f/2.0 32 MP, f/2.0, 26mm (wide), 1/2.8", 0.8µm
Video 720p 1080p@30fps
Sound
3.5mm jack Yes Yes
Loudspeaker Yes Yes