What is the detection range of the thermal camera?

The FLIR Lepton 3.5 sensor can detect heat sources up to 100 meters away, but accurate temperature measurement is recommended within a 10-meter radius.

Does the screen work with wet hands or gloves?

Yes, the device has a special 'Glove Mode' and the screen is optimized to work even in rain or with wet fingers.

How deep can this phone be submerged in water?

The Armor 28 Ultra meets IP68/IP69K standards, meaning it can withstand submersion in water up to 1.5 meters deep for 30 minutes and high-pressure water jets.

Does the phone have programmable buttons?

Yes, there is an orange 'Custom Key' on the left side that can be configured to launch the thermal camera, flashlight, or other apps with a single press.

How does the rear screen work?

The small 1.1-inch screen on the back of the phone displays the time, notifications, battery level, and music controls, saving the main screen.

Do the 1-inch sensor take better pictures than regular phones?

Yes, the Sony IMX989 sensor captures significantly more light, resulting in noticeably better night shots and natural depth of field (bokeh) compared to standard rugged phones.

uleFone Armor 28 Ultra

2025Software supported

4.6(850) · Ulefone Official, GSMArena, FLIR Systems Data

Release year2025

Display6.67 inches

ChipDimensity 9300+

RAM16GB

Camera50MP

Active support · ~1y of full support left

Dimensity 9300+

2025Today2027

Current version

Android 16

Total support

2 years

Security patches

2027-11

Expert assessment: Ulefone typically offers fewer software updates than major manufacturers, but the hardware is built to last for years in harsh conditions.

Price from

670,4 € -25%

New cost was 899 €

1 in stock

Condition

View offers (1)

12-month warranty·Free shipping·14-day returns·Verified device

Pros and Cons

Strengths and weaknesses at a glance.

Why choose

Top-tier performance
Professional thermal camera
Massive battery
Exceptional camera
Extreme durability
Fast charging

What to consider

Very heavy and thick
Limited software support
No eSIM
Expensive price
Difficult to repair

Specifications

Detailed Technical Info

Hardware and features in detail.

Screen size: 6.67"
Resolution: 1080 x 2400
Display type: AMOLED
Refresh rate: 120Hz
Max brightness: 1100 nits
Screen protection: Corning Gorilla Glass Victus, Mohs level 4

Display

Screen size: 6.67"
Resolution: 1080 x 2400
Display type: AMOLED
Refresh rate: 120Hz
Max brightness: 1100 nits
Screen protection: Corning Gorilla Glass Victus, Mohs level 4

Performance

Processor: Mediatek Dimensity 9300+ (4 nm)
CPU cores: Octa-core (1x3.4 GHz Cortex-X4 & 3x2.85 GHz Cortex-X4 & 4x2.0 GHz Cortex-A720)
GPU: Immortalis-G720 MC12
RAM: 16GB
AnTuTu score: 2100000 (v10)

Camera

Main camera: 50 MP, f/1.9, (wide), 1.0"-type, 1.6µm, dual pixel PDAF
Ultra-wide: 50 MP, f/2.2, 117˚
Telephoto: Not available
Front camera: 50 MP, f/2.5, (wide), 1/2.76", 0.64µm
Video: 8K@30fps, 4K@30/60fps, 1080p@30/60fps, gyro-EIS

Battery

Capacity: 10600 mAh
Charging speed: 120W wired, PPS, 40% in 10 min
Wireless charging: Yes (50W)
Battery life: Up to 4-5 days of normal use

Connectivity

5G: Yes
Wi-Fi: Wi-Fi 802.11 a/b/g/n/ac/6/7, tri-band
Bluetooth: 5.4, A2DP, LE
NFC: Yes
USB: USB Type-C 3.2 Gen2, Display Port 1.4, OTG, accessory connector pins

Body & Dimensions

Dimensions: 174.2 x 83.6 x 19.4 mm
Weight: 450 g
Materials: Reinforced rubber, aluminum alloy, glass
Water resistance: IP68/IP69K dust tight and water resistant (high pressure water jets; immersible up to 2m for 30 min)

Condition Classes

All devices are fully tested and working.

Good (B)

from 670,4 €

Some light signs of wear on rubber corners. Screen may have a few micro-scratches. Water resistance tested. Battery 90-95%.

Model characteristics

Common issues that may occur with uleFone Armor 28 Ultra.

Thermal camera app freezing

Moderate

Software conflict with background processes.

High weight

Minor

Massive battery and reinforced casing.

Overheating during wireless charging

Moderate

Thick casing hinders heat dissipation.

GPS drift

Minor

Metal components in the casing can slightly dampen the signal.

Greenfox check:Tested and clear

Repairs and Parts3/10 Internal Engineering Estimate

Battery Replacement

Hard

60–90€Estimated cost

Seals and glued casing make opening difficult without compromising water resistance.

Screen Replacement

Hard

120–180€Estimated cost

The screen is heavily glued to the frame, requiring specialized heating equipment.

Charging Port Repair

Medium

45–70€Estimated cost

The USB port is protected by a rubber cover; replacing the port requires partial motherboard removal.

Spare parts are difficult to find outside official channels; delivery times from China are long.

Environmental Impact

Buying a used device saves valuable resources.

This is equivalent to: Charging a smartphone for 12 years Driving from Tallinn to Tartu and back (370km)

CO₂ Saved

72 kg CO2e

Water Saved

15500 liters

E-Waste Avoided

410 grams

Reused

85%

Recycled

15%

Methodology: Fraunhofer Institute / Refurbed.com calculation model (2025)

Who Is This For?

This device is especially well-suited for these users.

Field Engineer / Construction Worker

Needs a tool that can withstand drops and detect overheating in electrical panels.

Thermal camera for diagnostics
Resistant to dust and impacts
Long battery life on site

Extreme Sports Athlete / Hiker

Someone who spends days away from civilization and needs reliable GPS and battery.

Dual-band GPS accuracy
Water and cold resistance
Powerful flashlight and SOS functions

Tech Enthusiast

Wants the best hardware (Dimensity 9300+) and unique features like a 1-inch camera sensor.

Unique combination of sensors on the market
Powerful performance for gaming and work
Distinctive design

Network Compatibility

Supported frequencies and carriers.

LatviaYour country

OperaatorStaatusMärkused

lmt Full5G tested and works

bite FullVoLTE support available

tele2 FullAll frequencies supported

Estonia

OperaatorStaatusMärkused

elisa Full5G and VoLTE support

tele2 Full5G support available

telia Full5G, VoLTE and VoWiFi work

Finland

OperaatorStaatusMärkused

dna FullVoLTE and VoWiFi support

elisa FullNordic 5G frequencies supported

telia FullFull compatibility

Lithuania

OperaatorStaatusMärkused

bite FullWorks without issues

tele2 FullVoLTE activated

telia FullExcellent 5G coverage

The device supports a wide range of global 5G frequencies, making it a good travel phone.

Comparisons With Other Models

How this model differs from the competition.

UpgradevsUlefone Armor 29 Ultra

The Armor 29 Ultra primarily offers software AI updates and slightly faster satellite connectivity, but the Armor 28 Ultra's 1-inch sensor remains top-tier.

Feature	uleFone Armor 28 Ultra	Ulefone Armor 29 Ultra
Processor	Dimensity 9300+	Dimensity 9400
Camera sensor	1-inch IMX989	1-inch IMX989
Satellite connectivity	No	Yes

Cross-shopvsDoogee V Max Plus

Ulefone wins in screen quality and thermal camera accuracy, while Doogee offers a larger battery (22000mAh).

Feature	uleFone Armor 28 Ultra	Doogee V Max Plus
Battery	10600 mAh	22000 mAh
Thermal camera	FLIR Lepton 3.5	Infiray
Weight	405g	530g

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Frequently Asked Questions

Warranty up to 12 months

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Prices starting from 670,4 €.

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uleFone Armor 28 Ultra

Pros and Cons

Why choose

What to consider

Detailed Technical Info

Display

Performance

Camera

Battery

Connectivity

Body & Dimensions

Condition Classes

Good (B)