Technical sheet of Ulefone Armor 21

Description

Ulefone Armor 21 – Pushing the Limits of Mid-Range Smartphones

Ulefone, a leading player in the world of smartphones, has unveiled its newest mid-range device, the Ulefone Armor 21. The phone is set to be released in May 2023, so it’s already garnering a lot of attention from tech enthusiasts and mobile aficionados alike.

Design and Materials

The Armor 21 has been built with an LCD IPS screen at 6.58 inches, and a resolution of 1080x2408 (FHD+). As well as this, it offers a 120hz refresh rate for those who enjoy smooth game-play on their device. Its 77.4% usable surface makes for ease of use, while the polycarbonate body makes for a sturdy and robust phone. What’s more, Ulefone have included a rugged feature in the form of a unique protective covering which increases resistance to falls and rain.

Audio

One exciting aspect of the Ulefone Armor 21 is its audio. With one of the loudest speakers currently available (122db), a 3.5W peak wattage, smart PA high volume boost, and a 36mm speaker diameter, you can be sure that no matter what type of media you’re playing on your phone, it will be heard clearly. Additionally, Ulefone included an 11.5cc-equivalent large sound cavity design to optimize sound quality for its users.

Hardware

As expected from a mid-range device, the Ulefone Armor 21 has some impressive hardware specs. It’s powered by a MediaTek Helio G99 (MT6789) processor, with a 6nm architecture. This processor is paired with 8GB LPDDR4X RAM, and 256GB UFS Storage 2.1. It’s also equipped with a side-mounted fingerprint sensor, for an added level of security.

Camera

In terms of camera set-up, the Armor 21 provides a Sony IMX686 Exmor RS with a 64.0MP shot. This includes an f/1.9 aperture and a CMOS sensor. For taking shots in low-light environments, Ulefone included a night vision camera, with 20.0MP and an f/1.8 aperture. On the front, you get a Sony IMX481, with 16.0MP and an f/2.2 aperture.

Connectivity

When it comes to connectivity, the Ulefone Armor 21 is no slouch either. It comes with Bluetooth 5.2, dual SIM, NFC, audio jack, infrared, Endoscope E1, uSmart E02, and a uSmart C01 Supermicroscope. Allowing you to connect to a wide range of devices, these features should be more than enough for most users.

Battery

Like any modern smartphone, the Ulefone Armor 21 is equipped with a hefty battery. Coming in at 9600mAh, the device has a fast charge time of 33.0W. This should allow you to power through your day without the worry of running out of juice quickly.

Conclusion

Overall, the Ulefone Armor 21 looks to be a solid mid-range device. With an impressive array of features, and a top tier hardware spec, the phone should provide a great experience for fans of mid-range devices. It’s set to release in May 2023, so until then, keep an eye out for leaks and more information about this impressive offering from Ulefone.

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Brand

Brand Ulefone
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Smartphones by Ulefone

Ulefone Armor 21 prices

Versions and prices
Ulefone Armor 21 Global · 8GB · 256GB $ 257

Release Date

Release dateMay 2023, 3 years ago

Related

Predecessor
Successors

Design & Materials of Ulefone Armor 21

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Structure

Size
81.6 mm176.0 mm18.1 mm
Print 3D Model
Weight 400 g
Usable surface 77 %
Materials Rugged Smartphone, Polycarbonate
Resistance certificates (dust, water) IP68, IP69 , MIL-STD-810H
Colors
Black
Repairability Class A B C D E
Drop resistance Class A B C D E 270 drops without defects
View European datasheet

Screen

Diagonal
6.58"
Type LCD IPS
Aspect Ratio 20:9
Resolution 1080 x 2408 px FHD+
Density 367 ppi High Density
Others
  • Water Drop Notch
  • Refresh rate 120 Hz
  • Touch sampling rate 240 Hz
  • Color LED Notifications
  • Scratch resistant
  • Capacitive
  • Multi-touch
  • Oleophobic coating
Best big screen mobilesBest phones with IPS screen
Others
Audio
122dB HiFi Quality Loudest Speaker
3.5W peak wattage
Smart PA high volume boost
36 mm speaker diameter
11.5cc-equivalent large sound cavity design
Halo
Number of LED lights: 18
Color: RGBMode: Music, Calling, Notification, Charging
Lighting modes: 10 types

Performance & Hardware of Ulefone Armor 21

Processor

Model MediaTek Helio G99 (MT6789)
CPU 2x CortexA76 2.2 GHz + 6x CortexA55 2.0 GHz
Type Octa-Core
Nanometer 6 nm
Frequency 2.2 GHz
64 Bits Yes
More smartphones with Mediatek Helio G99 processor

Graphics

GPU Mali-G57 MC2

RAM

RAM 8 GB
Type LPDDR4X RAM
More smartphones with 8GB RAM memory

Antutu

Score
411.900 Antutu v10
Overall performance better than 67% of devices

Storage

Capacity 256 GB
Type UFS Storage 2.1
SD Slot Yes , Independent SD slot
More smartphones with 256GB of internal storage

Security

Fingerprint Yes, on the side

Sensors

Fingerprint Yes
Proximity Yes
Light sensor Yes
Accelerometer Yes
Compass Yes
Gyroscope Yes
Barometer Yes
Gravity Yes
Geomagnetic Yes
Pedometer Yes
Coulometer Yes
Others
Notifications LED Color LED Notifications
Cooling system No
Gaming buttons No

Camera of Ulefone Armor 21

Rear camera

Standard
1
Resolution 64 Mpx
Aperture ƒ/ 1.9
Sensor Sony IMX686 Exmor RS
Type CMOS
Sensor size 1/1.7"
Pixel size 0.80 µm
Pixel Binning 1-4 (2x2)
Flash Dual LED
Optical Stabilisation No
Slow Motion Video No, 30 fps
Features
  • Digital zoom
  • Autofocus
  • Touch focus
  • Phase detection autofocus (PDAF)
  • Continuous shooting
  • Geotagging
  • Panorama
  • HDR
  • Face detection
  • White balance settings
  • ISO settings
  • Exposure compensation
  • Scene mode
  • Self-timer
More smartphones with IMX686 Exmor RS lens modelMore smartphones with Dual LED

Selfie

Resolution 16 Mpx
Aperture ƒ/ 2.2
Sensor Sony IMX481
Type CMOS BSI
Sensor size 1/3.09"
Pixel size 1.00 µm
See more details
Frequency Checker

Network compatibility

Go to tool

Connectivity of Ulefone Armor 21

Bands

4G LTE B1 (2100), B2 (1900), B3 (1800), B4 (1700/2100 AWS 1), B5 (850), B7 (2600), B8 (900), B12 (700), B17 (700), B18 (800), B19 (800), B20 (800), B28b (700), B28a (700), B34 (TDD 2100), B38 (TDD 2600), B39 (TDD 1900), B40 (TDD 2300), B41 (TDD 2500), B66 (1700/2100)
3G B1 (2100), B2 (1900), B4 (1700/2100 AWS A-F), B5 (850), B8 (900)
2G CDMA BC0 (800), CDMA BC1 (1900), B2 (1900), B3 (1800), B5 (850), B8 (900)

SIM card

TypeDual SIM Dual Standby (Nano SIM + Nano SIM)

SIM cards (MiniSIM) can be cut to MicroSIM, MicroSIM can be cut to NanoSIM and a SIM can even be cut to a NanoSIM (although not recommended). Download this SIM Cutting Template and forget about having to ask your operator for a new SIM...

Wi-Fi

Standards 802.11a , 802.11b , 802.11g , 802.11n , 802.11n 5GHz , 802.11ac
Others
  • Dual band
  • Wi-Fi Hotspot
  • Wi-Fi Direct
  • Wi-Fi Display

Bluetooth

Version Bluetooth 5.2 LELow energy consumption
Profiles
  • A2DP (Advanced Audio Distribution Profile)
  • LE (Low Energy)

Navigation

Supports GPS, A-GPS, GLONASS, Beidou, Galileo

USB

Charging Yes
Mass Storage Yes
USB On-The-Go (OTG) Yes
USB Type C Yes
USB Host 2.0 Yes

SAR

-- --
Others
NFC
Yes
Audio Jack
Yes
Radio FM
Yes
Computer sync
Yes
OTA sync
Yes
Infrared
Yes
Tethering.
Yes
VoLTE
Yes
uSmart Expansion
  • Endoscope E1
  • uSmart E02 Endoscope
  • uSmart C01 Supermicroscope

Battery of Ulefone Armor 21

Capacity
9600 mAh
Type Li-Ion
Fast charge Yes , 33.0W
Others
  • Non-removable
Efficiency
BGA
Runtime per charge ~ 90h
Charge cycles 1000 cycles
View European datasheet

Software of Ulefone Armor 21

Software

Operating System Android 13 Tiramisu
Android 13
Google Services With Google Mobile Services
More smartphones with Android 13 operating system

User reviews about the Ulefone Armor 21

User score

Not enough reviews
4 reviews
  • Screen7.6
  • Performance8.1
  • Camera8.4
  • Connectivity7.9
  • Battery9.8
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Latest reviews added

  • Horrible DATA Connection

    When I been a UleFone fan for a couple of years and had multiple devices from them.

    This armor21 however is extremely disappointing. It does not want to connect to the 4G network and it is also extremely slow while connecting to the 3G network I had to switch carriers to see if that would resolve the issue and unfortunately it did not now I'm stuck with this phone for the foreseeable future until they provide some sort of update that allows us to connect properly to both 4G and 3G.

    It is also disappointing that this is their flagship device and it does not connect to the 5G Network which is what is standard now amongst most phones.

    The software also has numerous bugs and I had to restart the phone factory restart the phone I should say multiple times now.

    Customer service on this phone is extremely slow and they do not want to help I sent them videos of the phone glitching out and they told me that it wasn't a uniform until I sent them a video showing them the model and name on the back of the device.

    Overall I'm very disappointed and I do not recommend this brand I'll be looking for a new rugged phone

    • 1.8
    • Screen5.7
    • Performance5.0
    • Camera8.5
    • Connectivity3.6
    • Battery9.0
  • Auto
    It fulfills its function of being a phone that is difficult to break

    It's my first rugged phone. POSITIVE It's a phone that can withstand knocks pretty well, which is its strongest point. It's something that is truly appreciated, because imagine investing $250, for example, on an Honor 5 Lite that is promoted as a rugged phone when in reality it wasn't. You can put it in water, although I don't recommend it. It has a mode for using the camera during immersion, proprietary to the brand. The battery is incredible, you can last 2 days without changing the charger if you use it moderately, even a little more. The 33-watt fast charge is acceptable, but for having a fairly large battery, it takes more than 2 hours to charge. The sound is beastly, it sounds quite hard, although the sound quality is not that good. THE REGULAR The processor just meets expectations, you can play some games occasionally. It does not have AMOLED, although the IPS panel surprised me without being great, it gives good viewing angles and a fairly acceptable brightness outdoors. THE BAD If you spend hours looking at networks it is not for you, it is for people who work, holding it in your hand for more than 15 minutes is quite tiring

    I'm a demanding camera user. This one is good, no more, it doesn't have OIS and it's certainly below devices of the same price. But it's still good and is better than many mid-range devices that only record at 1080p. This one records at 2k and you can notice the difference and the quality. It also gives quite a few details in the photos due to having a sensor of an acceptable size. Although it must be said that its camera software is quite far from traditional brands, sometimes the HDR and it gives strange colors, and sometimes it leaves scenes quite overexposed with highlights burning the skies of the scenes. In favor, the details of faces and the disappearance of shadows are similar in this sense to brands like Vivo, Oppo and Xiaomi. It also has a night vision camera, something that conventional phones don't have and well, it's not mentioned here.

    Pros
    • IP69k resistance
    • Autonomy and Battery
    • Loud sound
    • Infrared night vision camera
    Cons
    • Heavy
    • Optimization
    • Sound quality
    • 8.2
    • Screen6.7
    • Performance8.3
    • Camera7.7
    • Connectivity9.6
    • Battery10
  • Auto
    Excellent durability and sound

    The cell phone is very resistant, the battery lasts a long time, it is a mid-range and it works correctly.

    Pros
    • Battery
    • Endurance
    • Excellent sound
    • 10
    • Screen8.7
    • Performance9.6
    • Camera9.2
    • Connectivity9.3
    • Battery10
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Last update
September 15, 2025
State
  • Rumor
  • Presell
  • New
  • On Sale
Latest changes
  • New opinion 9 months ago
  • Aspect Ratio 2 years ago
  • Photos, Photos, Features 3 years ago
  • SAR, SAR 3 years ago
  • Usable surface, Resolution, Camera, Camera, Camera, Sensor Model, Camera, Camera 3 years ago
  • Density 3 years ago
  • Name, Width, Height, Thickness, Weight, Inches, Capacity (mAh), Operating System 3 years ago
7.3
Ki Cost-effective
Score
  • 5.9 Design & Materials
  • 6.4 Performance & Hardware
  • 6.4 Camera
  • 7.2 Connectivity
  • 8.8 Battery
What is a Ki score?
Ki is an automatic score based on the specifications and prices of devices. It is calculated using over 200 variables to rank smartphones, tablets and other devices from best to worst.
How do we calculate the Ki?

In this case, to determine the score we evaluate 5 general aspects:

  • Design and screen
  • Hardware and performance
  • Camera
  • Connectivity
  • Battery

Once these 5 factors have been rated, we introduce the price variable. This means that any two devices with the same ratings get a different Ki score for quality vs price.

Even a device objectively worse than another may have a higher Ki score if it has a better price.

Does the Ki score change?

The Ki varies as time goes by. As new devices with better specifications enter the market the Ki score of older devices will go down, always being compensated of their decrease in price.