HTC Butterfly vs Karbonn A21
General Info
| Manufacturer | |
| HTC | Karbonn |
| Announced | |
| December 2012 | 2012 |
| Status | |
| Available - January 2013 | Available |
| Colors | |
| Black | Pearl White |
| Form Factor | |
| Candybar | Candybar |
| Dimension | |
|
143 x 70.5 x 9.08 mm (5.63 x 2.78 x 0.36 in) |
- |
| Weight | |
| 140 g (4.94 oz) | - |
| 2G Network | |
| GSM 850/900/1800/1900 MHz | GSM 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G Network | |
| HSDPA 850/2100 MHz | HSDPA 2100 |
| Messaging | |
| SMS, MMS, Push Mail, EMail | SMS, MMS, Push Mail, EMail, IM |
Display
Hardware and OS
| OS | |
| Android OS, v4.1 (Jelly Bean) | Android OS, v4.0 (Ice Cream Sandwich) |
| Processor | |
| Dual-core 1.5 GHz Krait, Qualcomm Snapdragon S4 Pro APQ8064 [Similar] | Dual-core 1.2 GHz [Similar] |
| GPU | |
| Adreno 320 [Similar] | - |
| RAM | |
| 2 GB [Browse Similar] | 512 MB [Browse Similar] |
| Internal Memory | |
| 16 GB | 4 GB |
| External Memory | |
| microSD, up to 32 GB | microSD, up to 32 GB |
Camera
| Rear Camera | |
| 8 MP, 3264x2448 pixels [Similar] | 5 MP, 2592х1944 pixels [Similar] |
| Flash | |
| 5 Level LED flash | LED flash |
| Features | |
| Simultaneous HD video and image recording, Auto focus, Touch Focus, Geo-tagging, Image Stabilization, Face Detection, Slow motion video capture, Continuous shooting | Auto focus, Geo-tagging, Face Detection |
| Video | |
| Yes, 1080p@30fps HD recording, video stabilization | Yes |
| Front Camera | |
| Yes, 2.1 MP, 1080p [Similar] | Yes, 1.3 MP [Similar] |
Multimedia
| 3.5mm Jack | |
| Radio | |
| No | No |
| Games | |
| Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
Connectivity and Data Rate
| GPRS | |
| Yes | Yes |
| Edge | |
| Yes | Yes |
| 3G | |
| HSPA+; LTE, Cat3, 50 Mbps UL, 100 Mbps DL | HSDPA, 7.2 Mbps |
| Bluetooth | |
| Yes, v4.0 with aptX™ enabled | Yes, v2.1 with A2DP |
| Wi-Fi | |
| Wi-Fi 802.11 a/b/g/n, dual-band, DLNA, Wi-Fi hotspot; WiMAX 802.16 e | Wi-Fi 802.11 b/g/n |
| USB | |
| Yes, microUSB v2.0 | Yes, microUSB v2.0 |
| GPS | |
| Yes, with A-GPS support | Yes, with A-GPS support |
| Browser | |
| HTML5 | HTML |
User Memory
| Internal | |
| 16 GB, 2 GB RAM | 4 GB, 512 MB RAM |
| Expandable Storage | |
| microSD, up to 32 GB | microSD, up to 32 GB |
Sensors
| Fingerprint | |
| Proximity Sensor | |
| Accelerometer Sensor | |
| NFC | |
Battery
| Type | |
| Non-removable, Li-Po Battery | Li-Ion Battery |
| Capacity | |
| 2020 mAh | 1800 mAh |
| Stand by | |
| - | Up to 200 h |
| Talk Time | |
| - | Up to 5 h |