Phone Comparison - Karbonn A15 vs Karbonn A21 vs Xolo A500S

general General Info

Manufacturer Karbonn Karbonn Xolo
Announced 2012 2012 August 2013
Status Available Available Available - August 2013
Colors Black Pearl White Black
Form Factor Candybar Candybar Candybar
Dimension - - 125 x 63.2 x 8.98 mm
(4.92 x 2.49 x 0.35 in)
Weight - - -
2G Network GSM 900 / 1800 / 1900 - SIM 1 & SIM 2 GSM 900 / 1800 / 1900 - SIM 1 & SIM 2 GSM 900 / 1800 - SIM 1 & SIM 2
3G Network HSDPA 2100 HSDPA 2100 HSDPA 2100
Messaging SMS, MMS, Push Mail, EMail, IM SMS, MMS, Push Mail, EMail, IM SMS, MMS, Push Mail, EMail, IM

hardware Hardware and OS

OS Android OS, v4.0.4 (Ice Cream Sandwich) Android OS, v4.0 (Ice Cream Sandwich) Android OS, v4.2 (Jelly Bean)
Processor 1 GHz Dual-core 1.2 GHz Dual-core 1.2 GHz, MediaTek MT6572W
GPU - - Mali-400MP
RAM 512 MB 512 MB 512 MB
Internal Memory 4 GB (2.5 GB user available) 4 GB 4 GB
External Memory microSD, up to 32 GB microSD, up to 32 GB microSD, up to 32 GB

display Display

Type TFT touchscreen TFT capacitive touchscreen TFT capacitive touchscreen
Colors TFT touchscreen 256K colors 16M colors
Size 4.0 inches 4.5 inches 4.0 inches
Resolution 480 x 800 pixels (233 ppi) 480 x 800 pixels (207 ppi) 480 x 800 pixels (233 ppi)
Screen-to-Body Ratio - - 57.76%
Multi-Touch yes yes yes

multimedia Multimedia

3.5mm Jack yes yes yes
Radio FM radio No FM radio
Games Yes + Downloadable Yes + Downloadable Yes + Downloadable
Loud Speaker yes yes yes

camera Camera

Rear Camera 3.15 MP, 2048x1536 pixels 5 MP, 2592х1944 pixels 5 MP, 2592х1944 pixels
Flash No LED flash LED flash
Features Geo-tagging, Face Detection Auto focus, Geo-tagging, Face Detection Auto focus, Geo-tagging, Touch Focus, Face And Smile Detection
Video Yes Yes Yes, 720p
Front Camera Yes [Similar] Yes, 1.3 MP [Similar] Yes, VGA [Similar]

connectivity Connectivity and Data Rate

GPRS Yes Yes Yes
Edge Yes Yes Yes
3G HSDPA, 7.2 Mbps HSDPA, 7.2 Mbps HSDPA, 21.1 Mbps; HSUPA, 5.76 Mbps
Bluetooth Yes, with A2DP Yes, v2.1 with A2DP Yes, v3.0
Wi-Fi Wi-Fi 802.11 b/g/n Wi-Fi 802.11 b/g/n Wi-Fi 802.11 b/g/n, Wi-Fi hotspot
USB Yes, microUSB v2.0 Yes, microUSB v2.0 Yes
GPS Yes, with A-GPS support Yes, with A-GPS support Yes, with A-GPS support
Browser HTML HTML HTML5

memory User Memory

Internal 4 GB (2.5 GB user available), 512 MB RAM 4 GB, 512 MB RAM 4 GB, 512 MB RAM
Expandable Storage microSD, up to 32 GB microSD, up to 32 GB microSD, up to 32 GB

Apps Sensors

Fingerprint fingerprint not supported fingerprint not supported fingerprint not supported
Proximity Sensor proximity sensor not present proximity sensor present proximity sensor present
Accelerometer Sensor accelerometer sensor present accelerometer sensor present accelerometer sensor present
NFC NFC not supported NFC not supported NFC not supported

battery Battery

Type Li-Ion Battery Li-Ion Battery Li-Ion Battery
Capacity 1420 mAh 1800 mAh 1400 mAh
Stand by Up to 150 h Up to 200 h Up to 492 h (2G)
Up to 470 h (3G)
Talk Time - Up to 5 h Up to 10 h (2G)
Up to 8 h (3G)