Celkon A21
#6718
Philips W820
#9282Category Breakdown
Celkon A21
Philips W820
Performance
65.938.2
Camera
39.62.3
Display
16.016.0
Battery
15.220.0
Build
0.20.2
Connectivity
25.325.3
Audio
8.98.9
Overall
22.512.8
Summary
- The Celkon A21 features a 4.0-inch TFT display with a resolution of 320 x 480 pixels, while the Philips W820 has a smaller 3.2-inch TFT display with the same resolution but a higher pixel density of ~180 ppi.
- In terms of performance, both devices have 512MB of RAM, but the A21 is powered by a quad-core Mediatek MT6582 chipset, offering better processing capabilities compared to the unspecified chipset in the W820.
- The A21's rear camera is 3.15 MP, whereas the W820 has a superior 5 MP camera with autofocus.
- Battery capacity is another differentiator, with the A21 at 1500 mAh and the W820 at 2100 mAh, indicating longer potential usage for the latter.
- Lastly, the A21 runs on Android 4.2.2, providing a more updated software experience compared to the older Android 2.3 on the W820.
Side-by-side Specification Comparison
Celkon A21
Philips W820
General
Release Date
2014
2012
Announced
2014
2012
Description
N/A
N/A
Display
Size
4"
3.2"
Type
TFT
TFT
Resolution
320 x 480 pixels, 3:2 ratio (~144 ppi density)
320 x 480 pixels, 3:2 ratio (~180 ppi density)
PPI
320
320
Refresh Rate
60Hz
60Hz
HDR Support
✗
✗
Protection
N/A
N/A
Performance
Chipset
Mediatek MT6582 (28 nm)
N/A
CPU
Quad-core 1.3 GHz Cortex-A7
N/A
GPU
Mali-400MP2
N/A
Memory
512MB 256MB RAM
512MB
Expandable Storage
✗
✗
Card Slot
microSDHC
microSDHC (dedicated slot)
Camera
Main Camera
3.15 MP
5 MP, AF
Main Camera Features
N/A
LED flash
Front Camera
1.3 MP
Yes
Front Camera Features
N/A
N/A
Video Recording
Yes
176x144@15fps
Selfie Video
N/A
N/A
Optical Stabilization
✗
✗
Night Mode
✗
✗
Raw Photo Support
✗
✗
Battery
Capacity
1500 mAh
2100 mAh
Battery Details
Li-Ion 1500 mAh battery
Removable Li-Ion 2100 mAh battery
Charging Details
N/A
N/A
Fast Charging
✗
✗
Wireless Charging
✗
✗
Build & Safety
Dimensions
124.8 x 66.1 x 10.8 mm (4.91 x 2.60 x 0.43 in)
114.6 x 57.7 x 14.8 mm (4.51 x 2.27 x 0.58 in)
Weight
115.3 g
143 g
Materials
N/A
N/A
Colors
Black, Blue, Red
Black
Foldable
✗
✗
SAR
N/A
N/A
Connectivity
SIM
Dual SIM (Dual stand-by)
Mini-SIM
Network
GSM / HSPA
GSM / HSPA
Network Speed
HSPA
HSPA 7.2/0.384 Mbps
5G
✗
✗
4G
✗
✗
WiFi
Wi-Fi 802.11 b/g/n
Wi-Fi 802.11 b/g, hotspot
Bluetooth
4.0, A2DP
2.0
NFC
✗
✗
USB
microUSB
2.0
IR Blaster
✗
✗
Headphone Jack
✓
✓
Radio
✗
✗
Positioning
No
GPS, A-GPS
Audio
Stereo Speakers
✗
✗
Loudspeaker
Yes
Yes
Audio Jack
Yes
Yes
Software & Security
Operating System
Android 4.2.2 (Jelly Bean)
Android 2.3 (Gingerbread)
Fingerprint
✗
✗
Face Unlock
✗
✗
Sensors
Accelerometer
Accelerometer, proximity, compass