NIU GO 21
#10813Oppo A3x 4G
#10099Category Breakdown
NIU GO 21
Oppo A3x 4G
Performance
22.65.3
Camera
2.52.5
Display
19.535.1
Battery
4.21.6
Build
0.20.2
Connectivity
11.47.3
Audio
8.97.7
Overall
8.910.6
Summary
- The NIU GO 21 features a compact build with dimensions of 105 x 44.9 x 14.2 mm and a weight of 66g, while the Oppo A3x 4G lacks specific build details.
- The NIU GO 21 has a small 1.8-inch TFT display with a resolution of 128 x 160 pixels, whereas the Oppo A3x 4G does not provide display specifications.
- In terms of performance, the NIU GO 21 is equipped with 32MB of RAM, but the Oppo A3x 4G does not specify its performance metrics.
- The camera capabilities of the NIU GO 21 are minimal with a VGA rear camera, while the Oppo A3x 4G does not list any camera features.
- The NIU GO 21 has a 650mAh battery, but the Oppo A3x 4G does not provide battery information.
- Both devices lack advanced software features, with the NIU GO 21 supporting a headphone jack and the Oppo A3x 4G not including one.
Side-by-side Specification Comparison
NIU GO 21
Oppo A3x 4G
General
Release Date
2014
N/A
Announced
2014
N/A
Description
Single SIM: GO 21CDual SIM: GO 21
Also known as Oppo A20
Display
Size
1.8"
N/A
Type
TFT, 65K colors
N/A
Resolution
128 x 160 pixels (~114 ppi density)
N/A
PPI
128
0
Refresh Rate
60Hz
60Hz
HDR Support
✗
✗
Protection
N/A
N/A
Performance
Chipset
N/A
N/A
CPU
N/A
N/A
GPU
N/A
N/A
Memory
32Mb 32Mb RAM
N/A
Expandable Storage
✗
N/A
Card Slot
microSDHC
N/A
Camera
Main Camera
VGA
N/A
Main Camera Features
N/A
N/A
Front Camera
N/A
N/A
Front Camera Features
N/A
N/A
Video Recording
N/A
N/A
Selfie Video
N/A
N/A
Optical Stabilization
✗
✗
Night Mode
✗
✗
Raw Photo Support
✗
✗
Battery
Capacity
650 mAh
N/A
Battery Details
Li-Ion 650 mAh, removable
N/A
Charging Details
N/A
N/A
Fast Charging
✗
✗
Wireless Charging
✗
✗
Build & Safety
Dimensions
105 x 44.9 x 14.2 mm (4.13 x 1.77 x 0.56 in)
N/A
Weight
66 g
N/A
Materials
N/A
N/A
Colors
Black, Orange, Gray, Red, Green, Blue
N/A
Foldable
✗
✗
SAR
N/A
N/A
Connectivity
SIM
Dual SIM (Mini-SIM)
N/A
Network
GSM
N/A
Network Speed
N/A
N/A
5G
✗
✗
4G
✗
✗
WiFi
No
N/A
Bluetooth
2.1, EDR
N/A
NFC
✗
✗
USB
microUSB 2.0
N/A
IR Blaster
✗
✗
Headphone Jack
✓
✗
Radio
✗
✗
Positioning
No
N/A
Audio
Stereo Speakers
✗
✗
Loudspeaker
Yes
N/A
Audio Jack
Yes
N/A
Software & Security
Operating System
N/A
N/A
Fingerprint
✗
✗
Face Unlock
✗
✗
Sensors
N/A
N/A