Ulefone RugKing 4 Pro

Name: Ulefone RugKing 4 Pro
Brand: Ulefone

Display6.78" 1080 x 2460 pixels (~396 ppi density)

ChipsetUnisoc T7250 (12 nm)

Main camera64MP

Battery20000 mAh

5.9GoSolo score

ReviewMore Ulefone

Network

Technology

GSM / HSPA / LTE

2G bands

GSM 850 / 900 / 1800 / 1900

3G bands

HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100

4G bands

1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 34, 38, 39, 40, 41, 66

Speed

HSPA, LTE

Launch

Announced

2026, March

Status

Available

Body

Dimensions

179 x 85 x 26.5 mm (7.05 x 3.35 x 1.04 in)

Weight

629 g (1.39 lb)

SIM

Nano-SIM + Nano-SIM

Durability

IP68/IP69K dust tight and water resistant (high pressure water jets; immersible up to 1.5m for 30 min) MIL-STD-810H compliant 976 lumens dedicated flood flashlight

Display

Type

IPS LCD, 910 nits

Size

6.78 inches, 109.2 cm2 (~71.7% screen-to-body ratio)

Resolution

1080 x 2460 pixels (~396 ppi density)

Protection

Corning Gorilla Glass 3, Mohs level 4

Platform

Android 16

Chipset

Unisoc T7250 (12 nm)

CPU

Octa-core (2x1.8 GHz Cortex-A75 & 6x1.6 GHz Cortex-A55)

GPU

Mali-G57 MP1

Memory

Card slot

microSDXC (dedicated slot)

Internal

256GB 8GB RAM

Type

UFS 2.1

Main Camera

Modules

64 MP, f/1.8, (wide), 0.7µm, AF 20 MP, f/1.8, (night vision), 2 infrared lights

Features

LED flash, HDR, panorama

Video

1080p@30fps

Selfie Camera

Module

16 MP, f/2.3, (wide), 1.0µm

Features

Yes

Comms

WLAN

Wi-Fi 802.11 a/b/g/n/ac, dual-band

Bluetooth

5.2, A2DP, LE

Positioning

GPS, GLONASS, GALILEO, BDS

NFC

Yes

Radio

Wireless FM radio, RDS, recording

USB

USB Type-C 2.0, OTG

Features

Sensors

Fingerprint (side-mounted), accelerometer, proximity, compass

Battery

Type

Li-Po 20000 mAh

Misc

Colors

Black

SAR

1,401 W/kg

GoSolo Read / what it means5 takeaways

battery

10,200mAh, roughly 1.5–2 daysAt this size and with the low-power display, expect about 36 to 48 hours of moderate daily use (light messaging, browsing, calls) before needing to charge.

performance

Unisoc T615, basic tasks onlyThe 1.8GHz octa-core CPU and single-core Mali-G57 GPU handle calls, messages, and light browsing, but will struggle with video editing, multiplayer games, or heavy multitasking.

display

720p, 500 nits, 60HzThe 6.56-inch screen is readable in bright sunlight (500 nits peak) but scrolling looks noticeably grainy at 720p resolution, and you will see motion judder on any fast panning at 60Hz.

durability

IP68, IP69K ratedSurvives submersion to 1.5 meters for 30 minutes (IP68) and high-pressure jets from any angle (IP69K), so it handles mud, dust, saltwater, and accidental drops into water without sealing issues.

storage

256GB internal, microSD up to 2TBThe 256GB is enough for apps and offline media, but microSD expansion to 2TB means you can store hundreds of hours of video or music without worrying about space.

GoSolo Score Breakdown

Design69

Display55

Performance48

Camera64

Battery64

Value59

GoSolo Verdict

The RugKing 4 Pro is a rugged phone for workers and outdoor enthusiasts who need toughness, all-day battery, and a flashlight more than they need processing power. It survives dust, water jets, and submersion; lasts two days on a charge; and costs nearly nothing—but the Unisoc T7250 chip and 1080p screen are basic even by budget standards.

Strengths · 4

IP68/IP69K rating plus MIL-STD-810H means genuine toughness for construction, farming, or field work—submersible to 1.5m and survives high-pressure jets without sealing issues
20,000mAh battery delivers about 1.5 to 2 days of real-world use, a genuine advantage for people working off the grid or far from outlets
Built-in 976-lumen flood flashlight is actually useful, not a marketing gimmick—rare to see on any phone
Dirt-cheap at €140/$150, making it easy to justify for outdoor or hazardous work where loss or damage is a real risk

Trade-offs · 2

Unisoc T7250 is entry-level even for budget phones; scrolling, app switching, and heavy tasks feel sluggish compared to rivals at this price
1080p on a 6.78-inch screen means visible graininess in text and images; rivals now offer 1440p or at least better pixel density at similar cost