| Network | Technology |
GSM
|
|---|---|---|
| Launch | Announced | 2013, March. Released 2013, April |
| Status | Discontinued | |
| Body | Dimensions | 106 x 45 x 14.5 mm (4.17 x 1.77 x 0.57 in) |
| Weight | 73 g without battery (2.57 oz) | |
| SIM | Dual SIM (Mini-SIM) | |
| Display | Type | TFT, 256K colors |
| Size | 1.8 inches, 10.2 cm2 (~21.4% screen-to-body ratio) | |
| Resolution | 128 x 160 pixels (~114 ppi density) | |
| Memory | Card slot | microSDHC |
| Internal | 32Mb 32Mb RAM | |
| Phonebook | Yes | |
| Call records | Yes | |
| Main Camera | Single | VGA |
| Video | No | |
| Selfie camera | Features | No |
| Sound | Loudspeaker | Yes |
| 3.5mm jack | No | |
| Comms | WLAN | No |
| Bluetooth | 2.0 | |
| Positioning | No | |
| NFC | No | |
| Radio | Stereo FM radio | |
| USB | microUSB | |
| Features | Features |
Video Player Music Player Organizer |
| Messaging | SMS, IM | |
| Games | No | |
| Java | No | |
| Battery | Type | Li-Ion 600 mAh, removable |
| Stand-by | Up to 200 h | |
| Talk time | Up to 4 h | |
| Misc | Colors | Black, White, Blue, Green, Purple, Red, Fuchsia |
Mini Review & Verdict
A smart summary of the NIU C21A
Advantages
- Outstanding multi-day or week-long standby battery longevity between charges
- Tactile physical alphanumeric keypad providing positive-click dialing and messaging
- Tough, drop-resilient casing engineered to withstand everyday accidental drops
- Streamlined, distraction-free mobile experience dedicated strictly to core calling and SMS
Disadvantages
- Restricted to fundamental calling and text functions without modern app store ecosystems
- Compact non-touch display with modest resolution and limited viewing angles
- Rudimentary camera sensor designed only for basic snapshot documentation
Built with a steadfast commitment to straightforward utility and rugged durability, the NIU C21A stands as a dependable voice and text communicator. Featuring an ergonomic handheld footprint and a tactile physical alphanumeric keypad, the phone ensures swift, error-free dialing and messaging with positive physical key travel.
Operating without the bloated overhead of complex modern operating systems, the device delivers instant, lag-free responsiveness. Speaker acoustics are loud and punchy, ensuring clear voice call intelligibility even in bustling outdoor environments. A rudimentary camera sensor is included for quick, practical snapshots when documenting basic references.
Where this phone truly triumphs is power endurance: sustained by a 600mAh removable battery, it easily delivers multi-day or even week-long standby times between recharges. In summary, the NIU C21A is an unpretentious, rock-solid communication tool tailored for users seeking absolute reliability, simplicity, and unbeatable standby endurance.
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