Karbonn A21 vs Alcatel One Touch Idol
General Info
| Manufacturer | |
| Karbonn | Alcatel |
| Announced | |
| 2012 | January 2013 |
| Status | |
| Available | Available - May 2013 |
| Colors | |
| Pearl White | Silver, Slate, Pink, Red, Yellow |
| Form Factor | |
| Candybar | Candybar |
| Dimension | |
| - |
133 x 67.5 x 7.9 mm (5.24 x 2.66 x 0.31 in) |
| Weight | |
| - | 109 g (3.84 oz) |
| 2G Network | |
| GSM 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G Network | |
| HSDPA 2100 | HSDPA 900 / 2100 HSDPA 850 / 1900 / 2100 |
| Messaging | |
| SMS, MMS, Push Mail, EMail, IM | SMS, MMS, Push Mail, EMail, IM |
| Build Features | |
| - | Dragon Trail Glass |
Display
Hardware and OS
| OS | |
| Android OS, v4.0 (Ice Cream Sandwich) | Android OS, v4.1 (Jelly Bean) |
| Processor | |
| Dual-core 1.2 GHz [Similar] | Dual-core 1 GHz, MTK 6577+ [Similar] |
| GPU | |
| - | - |
| RAM | |
| 512 MB [Browse Similar] | N/A |
| Internal Memory | |
| 4 GB | 2.4 GB / 13.3 GB (dual SIM version) storage, 512 MB |
| External Memory | |
| microSD, up to 32 GB | microSD, up to 32 GB (dual SIM version) |
Camera
Multimedia
| 3.5mm Jack | |
| Radio | |
| No | Stereo FM radio with RDS |
| Games | |
| Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
Connectivity and Data Rate
| GPRS | |
| Yes | Yes |
| Edge | |
| Yes | Yes |
| 3G | |
| HSDPA, 7.2 Mbps | HSDPA 7.2 Mbps |
| Bluetooth | |
| Yes, v2.1 with A2DP | Yes, v3.0 with A2DP |
| Wi-Fi | |
| Wi-Fi 802.11 b/g/n | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, Wi-Fi hotspot |
| USB | |
| Yes, microUSB v2.0 | Yes, microUSB v2.0 |
| GPS | |
| Yes, with A-GPS support | Yes, with A-GPS support |
| Browser | |
| HTML | HTML |
User Memory
| Internal | |
| 4 GB, 512 MB RAM | 2.4 GB / 13.3 GB (dual SIM version) storage, 512 MB |
| Expandable Storage | |
| microSD, up to 32 GB | microSD, up to 32 GB (dual SIM version) |
Sensors
| Fingerprint | |
| Proximity Sensor | |
| Accelerometer Sensor | |
| NFC | |
Battery
| Type | |
| Li-Ion Battery | Li-Ion Battery |
| Capacity | |
| 1800 mAh | 1800 mAh |
| Stand by | |
| Up to 200 h | Up to 415 h (2G) Up to 410 h (3G) |
| Talk Time | |
| Up to 5 h | Up to 7 h 10 min (2G) Up to 3 h 30 min (3G) |