Karbonn A21+ vs Xiaomi Redmi 1S
General Info
| Manufacturer | |
| Karbonn | Xiaomi |
| Announced | |
| June 2013 | May 2014 |
| Status | |
| Available - July 2013 | Available - May 2014 |
| Colors | |
| Black, White | Black, Chinese Red, Metallic Gray/ blue, green, yellow panels |
| Form Factor | |
| Candybar | Candybar |
| Dimension | |
| - |
137 x 69 x 9.9 mm (5.39 x 2.72 x 0.39 in) |
| Weight | |
| - | 158 g (5.57 oz) |
| 2G Network | |
| GSM 900 / 1800 - SIM 1 & SIM 2 | GSM 900 / 1800 / 1900 |
| 3G Network | |
| HSDPA 2100 | HSDPA 1900 / 2100 |
| Messaging | |
| SMS, MMS, EMail, IM | SMS, MMS, EMail, IM |
| Build Features | |
| Touch and Swipe Gestures | - |
Display
Hardware and OS
| OS | |
| Android OS, v4.2 (Jelly Bean) | Android OS, v4.3 (Jelly Bean) |
| Processor | |
| Dual-core 1 GHz, MTK 6577 [Similar] | Quad-core 1.6 GHz Cortex-A7, Qualcomm MSM8228 Snapdragon [Similar] |
| GPU | |
| PowerVR SGX531 [Similar] | Adreno 305 [Similar] |
| RAM | |
| 512 MB [Browse Similar] | 1 GB [Browse Similar] |
| Internal Memory | |
| 4 GB (2.1 GB User Memory) | 8 GB |
| External Memory | |
| microSD, up to 32 GB | microSD, up to 32 GB |
Camera
| Rear Camera | |
| 5 MP, 2592х1944 pixels [Similar] | 8 MP, 3264 x 2448 pixels [Similar] |
| Flash | |
| LED flash | LED flash |
| Features | |
| Auto focus, Geo-tagging, Touch Focus | Auto focus, 1.4 µm Pixel Size, Geo-tagging, Touch Focus, Face And Smile Detection, HDR |
| Video | |
| Yes, 720p | 1080p@30fps |
| Front Camera | |
| Yes [Similar] | 1.3 MP, 720p@30fps [Similar] |
Multimedia
| 3.5mm Jack | |
| Radio | |
| FM radio; FM recording | FM radio |
| Games | |
| Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
Connectivity and Data Rate
| GPRS | |
| Class 12 (4+1/3+2/2+3/1+4 slots), 32 - 48 kbps | Yes |
| Edge | |
| Class 12 | Yes |
| 3G | |
| HSDPA, 7.2 Mbps; HSUPA, 5.76 Mbps | HSDPA, HSUPA |
| Bluetooth | |
| Yes, v4.0 with A2DP | v4.0, A2DP, LE |
| Wi-Fi | |
| Wi-Fi 802.11 b/g/n, Wi-Fi hotspot | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, Wi-Fi hotspot |
| USB | |
| Yes, microUSB v2.0 | microUSB v2.0, USB On-the-go |
| GPS | |
| Yes, with A-GPS support | Yes, with A-GPS |
| Browser | |
| HTML5 | HTML5 |
User Memory
| Internal | |
| 4 GB (2.1 GB User Memory), 512 MB RAM | 8 GB, 1 GB RAM |
| Expandable Storage | |
| microSD, up to 32 GB | microSD, up to 32 GB |
| USB OTG | |
| - | Supported |
Sensors
| Fingerprint | |
| Proximity Sensor | |
| Accelerometer Sensor | |
| NFC | |
Battery
| Type | |
| Li-Ion Battery | Li-Po Battery |
| Capacity | |
| 2000 mAh | 2000 mAh |
| Stand by | |
| Up to 240 h | - |
| Talk Time | |
| - | - |