Celkon A21
#6718
Samsung Gravity SMART
#8344Category Breakdown
Celkon A21
Samsung Gravity SMART
Performance
65.948.5
Camera
39.69.4
Display
16.016.0
Battery
15.215.2
Build
0.216.0
Connectivity
25.325.1
Audio
8.98.9
Overall
22.515.4
Summary
- The Celkon A21 features a 4.0-inch TFT display with a resolution of 320 x 480 pixels, while the Samsung Gravity SMART has a smaller 3.2-inch TFT display with the same resolution but a higher pixel density of approximately 180 ppi.
- In terms of performance, the A21 is powered by a quad-core 1.3 GHz Cortex-A7 processor and has 512MB of RAM, compared to the Gravity SMART's 800 MHz ARMv6 CPU and 150MB of RAM.
- Both devices have a 3.15 MP rear camera, but the A21 offers a slightly better selfie camera at 1.3 MP, whereas the Gravity SMART lacks a front-facing camera.
- Battery capacity is identical at 1500 mAh, but the A21 runs on a more recent Android 4.2.2 (Jelly Bean) operating system, while the Gravity SMART operates on Android 2.2 (Froyo).
- The build quality of the A21 is slightly more compact and lighter at 115.3g, compared to the heavier Gravity SMART at 130g.
Side-by-side Specification Comparison
Celkon A21
Samsung Gravity SMART
General
Release Date
2014
2011, June 22
Announced
2014
2011
Description
N/A
For T-Mobile.Also known as Samsung Gravity Touch 2, Samsung Smart, Samsung GT2, Samsung SGH-T589, Samsung Galaxy Q
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
800 MHz ARMv6
GPU
Mali-400MP2
N/A
Memory
512MB 256MB RAM
150MB 270MB RAM
Expandable Storage
✗
✗
Card Slot
microSDHC
microSDHC (dedicated slot), 2 GB included
Camera
Main Camera
3.15 MP
3.15 MP
Main Camera Features
N/A
LED flash
Front Camera
1.3 MP
N/A
Front Camera Features
N/A
N/A
Video Recording
Yes
320p@14fps
Selfie Video
N/A
N/A
Optical Stabilization
✗
✗
Night Mode
✗
✗
Raw Photo Support
✗
✗
Battery
Capacity
1500 mAh
1500 mAh
Battery Details
Li-Ion 1500 mAh battery
Removable Li-Ion 1500 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 x 59 x 14 mm (4.49 x 2.32 x 0.55 in)
Weight
115.3 g
130 g
Materials
N/A
N/A
Colors
Black, Blue, Red
Black/Red, Black/Green, Lunar Grey
Foldable
✗
✗
SAR
N/A
0.47 W/kg (head) 1.05 W/kg (body)
Connectivity
SIM
Dual SIM (Dual stand-by)
Mini-SIM
Network
GSM / HSPA
GSM / HSPA
Network Speed
HSPA
HSPA 3.6/0.384 Mbps
5G
✗
✗
4G
✗
✗
WiFi
Wi-Fi 802.11 b/g/n
Wi-Fi 802.11 b/g, DLNA, hotspot
Bluetooth
4.0, A2DP
3.0, A2DP
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 2.2 (Froyo)
Fingerprint
✗
✗
Face Unlock
✗
✗
Sensors
Accelerometer
Accelerometer, proximity