Compare

Specifications
 

Xiaomi Redmi 1S

Karbonn A21

Full Differences
Change compare mode
Xiaomi Redmi 1S
MORE PICTURES Karbonn A21
MORE PICTURES
 

Xiaomi Redmi 1S

Karbonn A21

Network
Technology GSM / HSPA GSM / HSPA
2G bands GSM 900 / 1800 / 1900 GSM 900 / 1800 / 1900 - SIM 1 & SIM 2
3G Network HSDPA 900 / 2100 HSDPA 2100
Speed HSPA HSPA 7.2/0.384 Mbps
Launch
Announced 2014, May. Released 2014, May 2012
Status Discontinued Discontinued
Body
Dimensions 137 x 69 x 9.9 mm (5.39 x 2.72 x 0.39 in) -
Weight 158 g (5.57 oz) -
Build Glass front (Asahi Dragontrail), plastic back, plastic frame
SIM Dual SIM (Mini-SIM, dual stand-by) Dual SIM (Mini-SIM)
Display
Type IPS LCD TFT, 256K colors
Size 4.7 inches, 60.9 cm2 (~64.4% screen-to-body ratio) 4.5 inches, 57.6 cm2
Resolution 720 x 1280 pixels, 16:9 ratio (~312 ppi density) 480 x 800 pixels, 5:3 ratio (~207 ppi density)
Protection Asahi Dragontrail Glass
Platform
OS Android 4.3 (Jelly Bean), upgradable to 4.4.4 (KitKat), MIUI 9.2 Android 4.0 (Ice Cream Sandwich)
Chipset Qualcomm MSM8228 Snapdragon 400 (28 nm)
CPU Quad-core 1.6 GHz Cortex-A7 Dual-core 1.2 GHz
GPU Adreno 305
Memory
Card slot microSDXC (dedicated slot) microSDHC (dedicated slot)
Internal 8GB 1GB RAM 4GB 512MB RAM
 eMMC 4.5
Main Camera
Modules 8 MP, f/2.2, 1/3.2", 1.4µm, AF 5 MP, AF
Features LED flash, HDR LED flash
Video 1080p@30fps Yes
Selfie Camera
Modules 1.6 MP 1.3 MP
Video 720p@30fps
ADVERTISEMENT
Sound
Loudspeaker Yes Yes
3.5mm jack Yes Yes
Comms
WLAN Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot Wi-Fi 802.11 b/g/n
Bluetooth 4.0, A2DP, LE 2.1, A2DP
Positioning GPS, GLONASS GPS
NFC No No
Infrared port No No
Radio FM radio No
USB microUSB 2.0, OTG microUSB 2.0
Features
Sensors Accelerometer, gyro, proximity, compass Accelerometer, proximity
Battery
Type Li-Ion 2000 mAh, removable Li-Ion 1800 mAh, removable
Stand-by Up to 200 h
Talk time Up to 5 h
Misc
Colors Black, Chinese Red, Metallic Gray/ blue, green, yellow panels Pearl White
SAR EU 0.44 W/kg (head)    
Models 2014011
Price About 90 EUR About 130 EUR
Tests
Performance Basemark OS II 2.0: 454
Display Contrast ratio: 1370 (nominal), 1.350 (sunlight)
Loudspeaker Voice 66dB / Noise 65dB / Ring 71dB
Audio quality Noise -95.4dB / Crosstalk -82.3dB
Battery (old) Endurance rating 51h

Popular rivals