Side-by-side technical data
NIU GO 21 vs NIU Niutek 3.5D2
Compare up to four phones using typed, normalized technical data. Measurements stay numeric, capabilities stay boolean, and options stay comparable.
The verdict
Neither runs away with it: each wins something.
Which one is for you?
NIU GO 21, if you care about…
- Weight
- 66 g
- against 98 g
NIU Niutek 3.5D2, if you care about…
- Battery Capacity
- 1,200 mAh
- against 650 mAh
- Bluetooth Version
- Bluetooth 3.0
- against Bluetooth 2.1
- Display Pixel Density
- 165 ppi
- against 114 ppi
- Usable Surface
- 51.5 %
- against 21.6 %
Specification comparison
Performance
| Specification | GO 21 | Niutek 3.5D2 |
|---|---|---|
| Processor Model | — | MediaTek MT6572M |
| Processor Process Size | — | 28 nm |
| Graphics GPU | — | Mali-400 |
| Storage Type | — | — |
| Maximum CPU Clock | — | 1 GHz |
| Maximum Storage Capacity | — | 2 GB |
| AnTuTu Score | — | — |
| Geekbench 6 Single-Core | — | — |
| Geekbench 6 Multi-Core | — | — |
| CPU Description | — | Dual-core 1.0 GHz Cortex-A7 |
| Processor Type | — | Dual-Core |
| 64-Bit Processor | — | — |
| RAM Capacity | — | 256 MB |
| RAM Type | — | — |
| Expandable Storage | Yes | Yes |
| AnTuTu version | — | — |
| 3DMark Wild Life Extreme | — | — |
| Maximum memory card | — | — |
Design
| Specification | GO 21 | Niutek 3.5D2 |
|---|---|---|
| Body Colors | Black, Orange, Grey, Red, Green, Blue | Black, White, Blue, Green, Red |
| Body Thickness | 14.2 mm | 11.5 mm Best value |
| Body Width | 44.9 mm | 61 mm |
| Body Height | 105 mm | 116 mm |
| Weight | 66 g Best value | 98 g |
| Usable Surface | 21.6 % | 51.5 % Best value |
| Body Materials | — | — |
| Resistance Features | — | — |
| Waterproof Depth | — | — |
| Drop Resistance Class | — | — |
| Repairability Class | — | — |
| Foldable | No | No |
| Rugged Build | No | No |
| Drop Test Count | — | — |
| Unfolded thickness | — | 11.5 mm |
| QWERTY keyboard | — | — |
Battery
| Specification | GO 21 | Niutek 3.5D2 |
|---|---|---|
| Battery Efficiency Rating | — | — |
| Battery Capacity | 650 mAh | 1,200 mAh Best value |
| Battery Type | Li-Ion | Li-Ion |
| Fast Charge Power | — | — |
| Battery Features | — | — |
| Battery Endurance | — | — |
| Wireless charging power | — | — |
| Charge cycles | — | — |
| Talk time | 6 h | 8 h Best value |
| Standby time | 200 h | 400 h Best value |
| Music playback time | — | — |
| Reverse wireless charging power | — | — |
Display
| Specification | GO 21 | Niutek 3.5D2 |
|---|---|---|
| Display Aspect Ratio | 4:5 | 3:2 |
| Display Technology | TFT LCD | TFT LCD |
| Peak Display Brightness | — | — |
| Display Diagonal | 1.8″ | 3.5″ Best value |
| Display Horizontal Resolution | 128 px | 320 px Best value |
| Display Vertical Resolution | 160 px | 480 px Best value |
| Display Pixel Density | 114 ppi | 165 ppi Best value |
| Display Refresh Rate | — | — |
| Touch Sampling Rate | — | — |
| Display Contrast Ratio | — | — |
| Display Features | — | — |
| Integrated Projector | No | No |
| Projector Brightness | — | — |
| Projector Horizontal Resolution | — | — |
| Projector Vertical Resolution | — | — |
| Cover display diagonal | — | — |
| Cover display refresh rate | — | — |
| Cover display peak brightness | — | — |
| Display colors | 65K colors | 256K colors Best value |
Sensors
| Specification | GO 21 | Niutek 3.5D2 |
|---|---|---|
| Fingerprint Sensor Placement | — | — |
Sensor
| Specification | GO 21 | Niutek 3.5D2 |
|---|---|---|
| Sensor Features | — | Accelerometer |
Software
| Specification | GO 21 | Niutek 3.5D2 |
|---|---|---|
| Operating System | — | Android 4.2 |
| OS Family | — | Android |
| OS Version | — | 4.2 |
| OS Update Support | — | — |
| Direct OS Updates | — | — |
| Google Services | — | — |
| Web browser | — | — |
| Java (J2ME) | No | — |
| Widevine L1 | — | — |
Connectivity
| Specification | GO 21 | Niutek 3.5D2 |
|---|---|---|
| SIM Configurations | Dual Mini-SIM | Dual Mini-SIM + Micro-SIM |
| Cellular Bands | 2G GSM 850, 2G GSM 900, 2G GSM 1800, 2G GSM 1900 | 2G GSM 850, 2G GSM 900, 2G GSM 1800, 2G GSM 1900, 3G UMTS B850, 3G UMTS 1900 |
| Cellular Technologies | GSM, GPRS | GSM, HSPA Best value |
| Wi-Fi Standards | — | Wi-Fi 802.11a/b/g/n |
| Wi-Fi Features | — | Dual Band, Wi-Fi Hotspot |
| Bluetooth Version | Bluetooth 2.1 | Bluetooth 3.0 Best value |
| Bluetooth Profiles | EDR | A2DP |
| Navigation Systems | — | GPS |
| Connectivity Features | 3.5 mm Audio Jack, FM Radio, USB Charging, microUSB | 3.5 mm Audio Jack, FM Radio, microUSB |
| USB Version | USB 2.0 | microUSB |
| SAR American Head | — | — |
| SAR American Body | — | — |
| SAR (EU) head | — | — |
| SAR (EU) body | — | — |
| Messaging | SMS, MMS, Instant messaging | — |
| Max. download speed | — | — |
| Max. upload speed | — | — |
Audio
| Specification | GO 21 | Niutek 3.5D2 |
|---|---|---|
| Microphone Count | — | — |
| Audio Features | EDR | A2DP, Loudspeaker |
| Alert types | — | — |
Technical
| Specification | GO 21 | Niutek 3.5D2 |
|---|---|---|
| EAN / GTIN | — | — |
| UPC | — | — |
| Launch price | — | — |
| MPN | — | — |
| Launch price (USD) | — | — |
Features
| Specification | GO 21 | Niutek 3.5D2 |
|---|---|---|
| Built-in functions | Audio/video player, Organizer, Predictive text input | — |
