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Ulefone Armor 21 Specs, Price, and Best Deals

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Ulefone Armor 21 is a rugged and feature-packed smartphone with a “loudest ever” rear-facing speaker, accompanied by captivating “Infinite Halo” RGB lighting. This device boasts a 120Hz display, a night-vision rear camera, an IR blaster, a powerful Helio G99 processor, 16GB RAM, a 9600 mAh battery, and Military Grade 810H protection with IP68 and IP69K waterproof ratings. The Ulefone Armor 21 aims to set new standards in the rugged smartphone market.

Where to Buy Ulefone Armor 21

Jumia Nigeria – See Offers | AliExpress – See Offers | Amazon US – See Offers

Ulefone Armor 21 Key Specs and Features

  • 6.58 inches IPS LCD Display, 1080 x 2408 pixels (~401 ppi density), ~72.6% screen-to-body ratio
  • Android 13
  • Mediatek MT8781 Helio G99 (6nm) Octa Core Processor
  • 8GB RAM
  • 64 MP (wide) + 24 MP (night vision) Dual Rear Camera
  • 16 MP Front Camera
  • Fingerprint Sensor (Side Mounted)
  • 256GB Built-in Storage
  • 4G LTE
  • 33W Fast Charging Capacity
  • 9600 mAh Non-Removable Li-Po Battery

Ulefone Armor 21

Design and Display

The Ulefone Armor 21’s design exudes durability and functionality. It is a rugged phone with rubber-wrapped body and metal sides, making it capable of withstanding harsh conditions. The android phone measure 175.5 x 82 x 15.5mm and weighing 320g, which is larger and heavier than standard smartphones, but this is expected for a rugged device built to endure tough environments.

It has a large speaker with the eye-catching RGB light ring called the Infinite Halo, adding a cool visual element that lights up to the beat of music. The phone’s functionality is top-notch, featuring side fingerprint recognition, customizable buttons, NFC, IR blasters, and a 3.5mm headphone jack, making it an impeccable choice for users seeking a robust and versatile device.

On the front, the Ulefone Armor 21 has 6.58-inch IPS LCD display with a 120Hz refresh rate, 1080 x 2408 pixels resolution and 400 nits brightness offers a bright and clear viewing experience, even outdoors.

While on the rear, the Ulefone phone has a triple-camera system positioned at the sides of the circle eye- catching speaker. Likewise, Around the middle of the rear panel there is a vertically aligned logo with NFC module beneath it.

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Additionally, at the top featuring  of the phone sits a headphone jack and microphone, while, the left side have a dedicated SOS button. The volume button power button that is embedded with fingerprint scanner are placed on the right. The bottom also includes a USB-C port and a speaker.


The Ulefone Armor 21 boasts a dual-camera setup that includes a high-resolution 64 MP Sony IMX686 wide-angle lens with an aperture of f/1.9 and PDAF technology for fast autofocus. it also has a 0.8µm pixel size that enhances image clarity and detail.

Additionally, the phone features a unique 24 MP OV24A1B night vision camera with an f/1.8 aperture, and two infrared night vision lights, enabling users to capture clear and detailed images even in low-light conditions.

Furthermore, the Armor 21 camera system comes with standard features such as LED flash, HDR, and panorama, allowing users to add creative touches to their photos. When it comes to video capabilities, the Ulefone Armor 21 can shoot in 4K resolution at 30 frames per second and 1080p resolution at 30fps, ensuring high-quality video recording.

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On the front, this gaming phone boasts a 16 MP wide-angle selfie camera with an f/2.2 aperture, featuring 1.0µm pixels for decent selfie shots. The front camera can record videos at 1080p resolution and 30fps, offering users the ability to capture clear and vibrant selfie videos.

With its versatile camera system, the Ulefone Armor 21 caters to photography enthusiasts and selfie lovers alike, providing high-resolution and night vision capabilities for capturing stunning photos and videos in various lighting conditions.

Hardware and Software

Under the hood, the Ulefone Armor 21 is powered by the MediaTek MT8781 Helio G99 chipset, a capable octa-core processor featuring two high-performance Cortex-A76 cores clocked at 2.2 GHz and six power-efficient Cortex-A55 cores running at 2.0 GHz.

The chipset is accompanied by the Mali-G57 MC2 GPU, that enables the phone to handle gaming and graphics-intensive tasks with ease. Additionally, the phone supports an 8GB of RAM and 256GB of internal storage, and offer supports for microSDXC cards via a dedicated slot, allowing for expandable storage, which is a useful feature for users who require additional space.

The key selling point of the Ulefone Armor 21 is its massive 9600mAh battery, offering extended usage without the need for frequent charging. This high-capacity battery is well-suited for users who are constantly on the move or spend extended periods in outdoor and remote environments where charging options may be limited. The battery also comes with a 33W SUPERVOOC fast charging system ensuring quick recharging, reducing downtime and keeping users connected for longer periods.

In terms of software, the Ulefone Armor 21 runs on Android 13, the latest iteration of the Android operating system. Android 13 brings new features, enhancements, and optimizations, offering users an updated and smooth user experience. Additionally, Ulefone may include their own customizations and optimizations through their user interface to further enhance the user experience and provide unique features.

Ulefone Armor 21 Price and Availability

Ulefone Armor 21 price starts at between $ 199.99 / € 329.99 / £ 299.99 / ₹16,499. The Ulefone Armor 21 price in Nigeria starts at about ₦200,000.

Ulefone Armor 21 Specs

Here are a few specs of the Ulefone Armor 21:

General Features

  • Platform: Android 13
  • Processor: Mediatek MT8781 Helio G99 (6nm) Octa Core Processor (2.2 GHz dual-core Cortex-A76 and 2.0 GHz hexa-core Cortex-A55)
  • GPU: Mali-G57 MC2
  • Memory: 8GB RAM
  • Colours: Black
  • Dimension: 176 x 81.6 x 18.1 mm
  • Weight: 400 g
  • SIM Type: Nano SIM
  • SIM Count: Dual SIM


  • Display: 6.58 inches IPS LCD Display, 1080 x 2408 pixels (~401 ppi density), 120Hz Refresh Rate, ~72.6% screen-to-body ratio
  • Screen Protection: Yes
  • Foldable Display: No


  • Rear Camera: 64 MP (wide), f/1.9, PDAF + 24 MP (Night Vision), , 2 infrared night vision lights Dual Camera
  • Rear Camera Features: LED Flash, HDR, Panorama, 4K@30fps, 1080p@30fps
  • Front Camera: 16 MP (wide), f/2.2 Camera, 1080p@30fps


  • Built-in Storage: 256GB
  • Memory Card Support: microSDXC (dedicated slot)
  • Bundled Cloud Storage:

Network Support

  • 2G GSM: GSM 850 / 900 / 1800 / 1900 – SIM 1 & SIM 2
  • 2G CDMA 1X: No
  • 3G WCDMA: HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
  • 3G CDMA EVDO: No
  • 4G LTE: LTE Bands 1, 2, 3, 4, 5, 7, 8, 12, 17, 19, 20, 28, 34, 38, 39, 40, 41, 66
  • 5G: No

Internet & Connectivity

  • GPRS: Yes
  • EDGE: Yes
  • 3G/WCDMA/HSPA: Yes
  • HSPA+: Yes
  • 4G LTE: Yes
  • 5G:
  • WLAN: Yes, Wi-Fi 802.11 a/b/g/n/ac, dual-band
  • Wi-Fi Hotspot: Yes
  • Bluetooth: Yes Bluetooth 5.2, A2DP, LE
  • NFC: Yes
  • Infrared Blaster: Yes
  • USB Port: Yes, USB Type-C 2.0


  • SMS/MMS: Yes
  • Instant Messaging: Yes
  • Push Emails: Yes
  • Email Protocol:


  • Music Player: Yes
  • Video Player: Yes
  • FM Radio: Stereo FM radio, RDS, recording
  • Loudspeaker: Yes (122dB)
  • 3.5mm Jack: Yes


  • Navigation: Yes, GPS, GLONASS, GALILEO, BDS
  • Maps: Yes

Sensors & Control

  • Digital Compass: Yes
  • Accelerometer: Yes
  • Proximity Sensor: Yes
  • Light Sensor: Yes
  • Barometer: Yes
  • SpO2:
  • Pedometer:
  • Heart Rate Monitor:
  • Gyroscope: Yes
  • Fingerprint Scanner: Yes, (side mounted)
  • Iris Scanner:
  • Face Unlock:
  • Stylus Pen:
  • Intelligent Digital Assistant: Yes
  • Motion Sensing / Gesture Control:
  • Voice Control: Yes

Other Features

  • Video Streaming: Yes
  • Active Noise Cancellation: Yes
  • Wireless Charging: No
  • Built-in Mobile Payment:
  • Water Resistant: Yes, IP68/IP69K, MIL-STD-810H compliant
  • Dust Resistant: Yes
  • Image Editor: Yes
  • Video Editor: Yes
  • Document Viewer:
  • Document Editor:


  • Battery: 9600 mAh Non-removable Li-Po Battery
  • Talktime:
  • Standby Time:
  • Fast Charging: 33W Fast Charging Capacity
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Adeosun Ajibola
Adeosun Ajibola
Adeosun is an experienced Tech Writer specializing on Mobile Devices and Electronic Gadgets. At NaijaTechGuide, she is the Tech Specialist on Smartphones, Laptops, and TVs and since 2020 has written over 600 articles covering these verticals for the Tech Blog. She also has interests in Digital Marketing and eCommerce.

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