Celkon A21
#6718
Samsung Galaxy Attain 4G
#6296Category Breakdown
Celkon A21
Samsung Galaxy Attain 4G
Performance
65.953.1
Camera
39.639.6
Display
16.033.2
Battery
15.216.4
Build
0.216.7
Connectivity
25.338.4
Audio
8.98.9
Overall
22.524.3
Summary
- The Celkon A21 features a 4.0-inch TFT display with a resolution of 320 x 480 pixels, while the Samsung Galaxy Attain 4G has a smaller 3.5-inch TFT display with the same resolution but a higher pixel density of approximately 165 ppi.
- In terms of performance, the A21 is powered by a quad-core 1.3 GHz Cortex-A7 processor, compared to the Attain's single-core 1.0 GHz CPU, which may result in better multitasking on the A21.
- Both devices have a 3.15 MP rear camera and a 1.3 MP front camera, providing similar photographic capabilities.
- The A21 has a 1500 mAh battery, while the Attain offers a slightly larger 1650 mAh battery, potentially providing longer usage time.
- The A21 runs on Android 4.2.2 (Jelly Bean), offering a more updated software experience compared to the Attain's Android 2.3 (Gingerbread).
- Overall, the A21 presents a better build quality and performance profile, while the Attain has a slightly more compact design and larger battery.
Side-by-side Specification Comparison
Celkon A21
Samsung Galaxy Attain 4G
General
Release Date
2014
2012
Announced
2014
2012
Description
N/A
For MetroPCSAlso known Samsung SCH-R920
Display
Size
4"
3.5"
Type
TFT
TFT, 256K colors
Resolution
320 x 480 pixels, 3:2 ratio (~144 ppi density)
320 x 480 pixels, 3:2 ratio (~165 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
1.0 GHz
GPU
Mali-400MP2
N/A
Memory
512MB 256MB RAM
512MB RAM
Expandable Storage
✗
✗
Card Slot
microSDHC
microSDHC (dedicated slot)
Camera
Main Camera
3.15 MP
3.15 MP
Main Camera Features
N/A
N/A
Front Camera
1.3 MP
1.3 MP
Front Camera Features
N/A
N/A
Video Recording
Yes
Yes
Selfie Video
N/A
N/A
Optical Stabilization
✗
✗
Night Mode
✗
✗
Raw Photo Support
✗
✗
Battery
Capacity
1500 mAh
1650 mAh
Battery Details
Li-Ion 1500 mAh battery
Removable Li-Ion 1650 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)
113.1 x 60.5 x 11.7 mm (4.45 x 2.38 x 0.46 in)
Weight
115.3 g
119.1 g
Materials
N/A
N/A
Colors
Black, Blue, Red
Black
Foldable
✗
✗
SAR
N/A
0.78 W/kg (head) 0.91 W/kg (body)
Connectivity
SIM
Dual SIM (Dual stand-by)
Mini-SIM
Network
GSM / HSPA
CDMA / EVDO / LTE
Network Speed
HSPA
EV-DO Rev.A 3.1 Mbps, LTE
5G
✗
✗
4G
✗
✓
WiFi
Wi-Fi 802.11 b/g/n
Wi-Fi 802.11 b/g/n, hotspot
Bluetooth
4.0, A2DP
Yes
NFC
✗
✗
USB
microUSB
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