Nokia Lumia 900 vs Karbonn A21
General Info
| Manufacturer | |
| Nokia | Karbonn |
| Announced | |
| January 2012 | 2012 |
| Status | |
| Available - May 2012 | Available |
| Colors | |
| Black, cyan | Pearl White |
| Form Factor | |
| Candybar | Candybar |
| Dimension | |
|
127.8 x 68.5 x 11.5 mm, 90 cc (5.03 x 2.7 x 0.45 in, 3.54 cc) |
- |
| Weight | |
| 160 g (5.64 oz) | - |
| 2G Network | |
| GSM 850 / 900 / 1800 / 1900 | GSM 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G Network | |
| HSDPA 850 / 900 / 1900 / 2100 | HSDPA 2100 |
| 4G Network | |
| LTE 700 / 1700 / 2100 | - |
| Messaging | |
| SMS, MMS, Push Mail, EMail, IM | SMS, MMS, Push Mail, EMail, IM |
Display
Hardware and OS
| OS | |
| Microsoft Windows Phone 7.5 Mango | Android OS, v4.0 (Ice Cream Sandwich) |
| Processor | |
| 1.4 GHz Scorpion, Qualcomm APQ8055 Snapdragon [Similar] | Dual-core 1.2 GHz [Similar] |
| GPU | |
| Adreno 205 [Similar] | - |
| RAM | |
| 512 MB [Browse Similar] | 512 MB [Browse Similar] |
| Internal Memory | |
| 16 GB storage | 4 GB |
| External Memory | |
| No | microSD, up to 32 GB |
Camera
Multimedia
| 3.5mm Jack | |
| Radio | |
| Stereo FM radio with RDS | No |
| Games | |
| Yes | Yes + Downloadable |
| Loud Speaker | |
Connectivity and Data Rate
| GPRS | |
| Class 33 | Yes |
| Edge | |
| Class 33 | Yes |
| 3G | |
| HSDPA, 21 Mbps; HSUPA, 5.76 Mbps, LTE, Cat3, 50 Mbps DL, 25 Mbps UL | HSDPA, 7.2 Mbps |
| Bluetooth | |
| Yes, v2.1 with A2DP, EDR | Yes, v2.1 with A2DP |
| Wi-Fi | |
| Wi-Fi 802.11 b/g/n | Wi-Fi 802.11 b/g/n |
| USB | |
| Yes, microUSB v2.0, HS | Yes, microUSB v2.0 |
| GPS | |
| Yes, with A-GPS support | Yes, with A-GPS support |
| Browser | |
| HTML5 | HTML |
User Memory
| Internal | |
| 16GB storage, 512 MB RAM | 4 GB, 512 MB RAM |
| Expandable Storage | |
| No | microSD, up to 32 GB |
Sensors
| Fingerprint | |
| Proximity Sensor | |
| Accelerometer Sensor | |
| NFC | |
Battery
| Type | |
| Standard battery, Li-Ion | Li-Ion Battery |
| Capacity | |
| 1830 mAh (BP-6EW) | 1800 mAh |
| Stand by | |
| Up to 300 h | Up to 200 h |
| Talk Time | |
| Up to 7 h | Up to 5 h |