Product
Xiaomi Redmi 1S
Xiaomi Redmi 1S
₹5,999
Xiaomi Redmi 2
Xiaomi Redmi 2
₹5,999
Battery
Charging - 10W wired, QC1
Type Li-Ion 2000 mAh, removable Li-Po 2200 mAh, removable
Body
Build Glass front (Asahi Dragontrail), plastic back, plastic frame Glass front (Gorilla Glass 2), plastic back, plastic frame
Dimensions 137 x 69 x 9.9 mm (5.39 x 2.72 x 0.39 in) 134 x 67.2 x 9.4 mm (5.28 x 2.65 x 0.37 in)
SIM Dual SIM (Mini-SIM, dual stand-by) Dual SIM (Micro-SIM, dual stand-by)
Weight 158 g (5.57 oz) 133 g (4.69 oz)
Comms
Bluetooth 4.0, A2DP, LE 4.0, A2DP, LE
NFC No No
Positioning GPS, GLONASS GPS, GLONASS, BDS
Radio FM radio Stereo FM radio
USB microUSB 2.0, OTG microUSB 2.0, OTG
WLAN Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot
Display
Protection Asahi Dragontrail Glass Corning Gorilla Glass 2
Resolution 720 x 1280 pixels, 16:9 ratio (~312 ppi density) 720 x 1280 pixels, 16:9 ratio (~312 ppi density)
Size 4.7 inches, 60.9 cm2 (~64.4% screen-to-body ratio) 4.7 inches, 60.9 cm2 (~67.6% screen-to-body ratio)
Type IPS LCD IPS LCD
Features
Sensors Accelerometer, gyro, proximity, compass Accelerometer, gyro, proximity, compass
Launch
Announced 2014, May. Released 2014, May 2015, January. Released 2015, January
Status Discontinued Discontinued
Main Camera
Features LED flash, HDR LED flash, HDR
Single 8 MP, f/2.2, 1/3.2", 1.4µm, AF 8 MP, f/2.2, 28mm (wide), 1/3.2", 1.4µm, AF
Video 1080p@30fps 1080p@30fps
Memory
Card slot microSDXC (dedicated slot) microSDHC (dedicated slot)
Internal 8GB 1GB RAM 8GB 1GB RAM, 16GB 2GB RAM
  eMMC 4.5 eMMC 4.5
Misc
Colors Black, Chinese Red, Metallic Gray/ blue, green, yellow panels Black, White, Yellow, Pink, Green
Models 2014011 2014817, 2014818, 2014816, HM2014821
SAR - 0.70 W/kg (head)     0.70 W/kg (body)    
Network
2G bands GSM 900 / 1800 / 1900 GSM 900 / 1800 / 1900 - SIM 1 & SIM 2
3G bands HSDPA 900 / 2100 HSDPA 850 / 1900 / 2100
4G bands - 3, 7, 38, 39, 40, 41
Speed HSPA HSPA, LTE Cat4 150/50 Mbps
Technology GSM / HSPA GSM / HSPA / LTE
  - TD-SCDMA
Our Tests
Audio quality Noise -95.4dB / Crosstalk -82.3dB Noise -94.8dB / Crosstalk -95.8dB
Battery (old) Endurance rating 51h Endurance rating 55h
Camera Photo / Video Photo / Video
Display Contrast ratio: 1370 (nominal), 1.350 (sunlight) Contrast ratio: 974:1 (nominal), 1.763 (sunlight)
Loudspeaker Voice 66dB / Noise 65dB / Ring 71dB Voice 70dB / Noise 70dB / Ring 77dB
Performance Basemark OS II 2.0: 454 Basemark OS II 2.0: 511
Platform
Chipset Qualcomm MSM8228 Snapdragon 400 (28 nm) Qualcomm MSM8916 Snapdragon 410 (28 nm)
CPU Quad-core 1.6 GHz Cortex-A7 Quad-core 1.2 GHz Cortex-A53
GPU Adreno 305 Adreno 306
OS Android 4.3 (Jelly Bean), upgradable to 4.4.4 (KitKat), MIUI 9.2 Android 4.4.4 (KitKat), MIUI 6.0
Selfie camera
Single 1.6 MP 2 MP
Video 720p@30fps 720p
Sound
3.5mm jack Yes Yes
Loudspeaker Yes Yes
Offers No offers available No offers available