NIU GO 21
#10728
VK Mobile VK4100
#9213Category Breakdown
NIU GO 21
VK Mobile VK4100
Performance
54.358.8
Camera
41.841.8
Display
48.348.3
Battery
43.543.5
Build
70.870.8
Overall
50.051.3
Summary
- The NIU GO 21 features a compact build with dimensions of 105 x 44.9 x 14.2 mm and weighs 66g, while the VK Mobile VK4100 is slightly larger at 104 x 52 x 25.9 mm but weighs less.
- Both phones have a 1.8" TFT display with the same resolution, but the VK4100 supports 256K colors compared to the 65K colors of the GO 21.
- In terms of performance, the NIU GO 21 has 32MB of RAM and storage, whereas the VK4100 offers 128MB of RAM and storage.
- Both devices have a VGA rear camera with no front camera, and neither supports video recording.
- The GO 21 has a 650mAh battery, while the VK4100's battery capacity is unspecified.
- The GO 21 includes a headphone jack, while the VK4100 does not, and both lack advanced software features.
Side-by-side Specification Comparison
NIU GO 21
VK Mobile VK4100
General
Release Date
2014
2006
Announced
2014
2006
Description
Single SIM: GO 21CDual SIM: GO 21
N/A
Display
Size
1.8"
1.8"
Type
TFT, 65K colors
TFT, 256K colors
Resolution
128 x 160 pixels (~114 ppi density)
128 x 160 pixels (~114 ppi density)
PPI
128
128
Refresh Rate
60Hz
60Hz
Peak Brightness
N/A
N/A
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
128MB
Expandable Storage
✗
✓
Card Slot
microSDHC
Yes
Camera
Main Camera
N/A
N/A
Main Camera Details
VGA
VGA
Front Camera
N/A
N/A
Front Camera Details
N/A
N/A
Video Recording
N/A
No
Selfie Video
N/A
N/A
OIS
✗
✗
Night Mode
✗
✗
RAW Support
✗
✗
Battery
Capacity
650 mAh
N/A
Battery Details
Li-Ion 650 mAh, removable
Removable Li-Ion battery
Charging Details
N/A
N/A
Fast Charging
✗
✗
Wireless Charging
✗
✗
Build & Design
Dimensions
105 x 44.9 x 14.2 mm (4.13 x 1.77 x 0.56 in)
104 x 52 x 25.9 mm (4.09 x 2.05 x 1.02 in)
Weight
66 g
N/A
Materials
N/A
N/A
Water Resistance
N/A
N/A
Colors
Black, Orange, Gray, Red, Green, Blue
Black
Foldable
✗
✗
Connectivity
SIM
Dual SIM (Mini-SIM)
Mini-SIM
Network
GSM
GSM
Network Speed
N/A
N/A
5G
✗
✗
4G
✗
✗
WiFi
No
No
Bluetooth
2.1, EDR
Yes
NFC
✗
✗
USB
microUSB 2.0
Proprietary
IR Blaster
✗
✗
Headphone Jack
✓
✗
Radio
✗
✗
Positioning
No
No
Software
Operating System
N/A
N/A
OS Version
N/A
N/A
Security
Fingerprint
✗
✗
Face Unlock
✗
✗
Sensors
N/A
N/A
Audio
Stereo Speakers
✗
✗
Loudspeaker
Yes
No
Audio Jack
Yes
No