Samsung Galaxy S21 UltravsUlefone Armor X31 Pro 5G

We compare these two popular phones to help you decide which one fits your needs and budget better.

Samsung
Samsung Galaxy S21 Ultra
Galaxy S21 Ultra
Processor:Samsung Exynos 2100
RAM:12GB
Storage:128GB

Quick Stats

The Galaxy S21 Ultra's impressive battery life is its standout feature, lasting a full day with ease.
The Samsung Galaxy S21 Ultra's display is its standout feature, offering exceptional brightness and silky-smooth visuals.
The Galaxy S21 Ultra's camera system delivers inconsistent results, with excellent daytime shots but subpar low-light performance mostly.
The Samsung Galaxy S21 Ultra's exceptional performance makes it a top contender with lightning-fast everyday tasks and seamless gaming capabilities.
Ulefone
Ulefone Armor X31 Pro 5G
Armor X31 Pro 5G
Processor:MediaTek Dimensity 6300
RAM:8GB
Storage:256GB

Quick Stats

The Ulefone Armor X31 Pro 5G boasts an exceptional battery life, lasting up to three days with moderate usage.
The Ulefone Armor X31 Pro 5G's impressive display boasts high brightness, fast refresh rate, and scratch-resistant Corning Gorilla Glass.
The Ulefone Armor X31 Pro 5G boasts an impressive camera system with high-quality results in various lighting conditions.
The Mediatech 6300 chip provides decent performance, sufficient for daily usage and outdoor activities with a phone that can handle multiple tasks.
Key Differences

Processor Speed

Winner
Samsung Galaxy S21 Ultra
2.91 GHz
Ulefone Armor X31 Pro 5G
2.40 GHz

RAM

Winner
Samsung Galaxy S21 Ultra
12GB
Ulefone Armor X31 Pro 5G
8GB

Storage

Winner
Samsung Galaxy S21 Ultra
128GB
Ulefone Armor X31 Pro 5G
256GB

Weight

Winner
Samsung Galaxy S21 Ultra
227g
Ulefone Armor X31 Pro 5G
306g
Rank
Samsung Galaxy S21 Ultra
Winner
#63
Ulefone Armor X31 Pro 5G
#566
Scores by Category
Rankings
Connectivity
Samsung Galaxy S21 Ultra
#218
Winner
Ulefone Armor X31 Pro 5G
#378
Design
Samsung Galaxy S21 Ultra
#85
Winner
Ulefone Armor X31 Pro 5G
#397
Display
Samsung Galaxy S21 Ultra
#4
Winner
Ulefone Armor X31 Pro 5G
#613
Performance
Samsung Galaxy S21 Ultra
#334
Winner
Ulefone Armor X31 Pro 5G
#609
Battery
Samsung Galaxy S21 Ultra
#485
Winner
Ulefone Armor X31 Pro 5G
#679
Camera
Samsung Galaxy S21 Ultra
#10
Winner
Ulefone Armor X31 Pro 5G
#259
item_phones_categoryId
Samsung Galaxy S21 Ultra
#1
Tie
Ulefone Armor X31 Pro 5G
#1
Tie

Note: Lower rank number indicates a better position in category.

Specifications Comparison
Specification
Samsung Samsung Galaxy S21 Ultra
Ulefone Ulefone Armor X31 Pro 5G
Model
Samsung Exynos 2100
MediaTek Dimensity 6300
CPU
1x Cortex, X1 2,91 GHz + 3x Cortex, A78 2,81 GHz + 4x Cortex, A55 2,21 GHz.
2x2.4 GHz ARM Cortex, A76 +6x2.0 GHz ARM Cortex, A55
Type
Octa-Core
Octa-Core
Nanometer
5
6
Frequency
2.91
2.40
64 Bits
Yes
Yes
GPU
ARM Mali-G78 MC14
Arm Mali-G57 MC2
RAM
12
8
Type
RAM LPDDR5
LPDDR4X RAM
Capacity
128
256
Type
UFS Storage 3.1
N/A
SD slot
No
N/A
Fingerprint security
Yes, in screen
Yes, on the side
Fingerprint sensor
Yes
Yes
Proximity sensor
Yes
Yes
Light sensor
Yes
Yes
Accelerometer sensor
Yes
Yes
Compass sensor
Yes
Yes
Gyroscope sensor
Yes
Yes
Barometer sensor
Yes
N/A
Hall sensor
Yes
N/A
Geomagnetic sensor
Yes
N/A
Audio
Dolby Atmos, Hi-Res Audio, Noise cancellation microphone, Stereo Speakers
N/A
Antutu Score
749000
406666
Antutu Version
Antutu v10
Antutu v10
Antutu Standing
Overall performance better than 82% of devices
Overall performance better than 69% of devices
Cooling system
No
No
Gaming buttons
No
No
Extras
N/A
N/A

Note: Highlighted specifications show differences between the two devices.

Pros and Cons

Samsung Galaxy S21 Ultra

Strengths

No specific pros listed for this device

Weaknesses

No specific cons listed for this device

Ulefone Armor X31 Pro 5G

Strengths

The phone's design is sturdy and has excellent protection capability with IP68, IP69K, and military-grade certifications.
It can withstand extreme temperatures, falls, and has a waterproof and dustproof design.
The camera setup is impressive, with a 64MP main camera that takes high-quality photos in daylight and supports digital cropping to 2x focal length.
The phone has a 25MP infrared night vision camera that performs well at night and provides a unique tone and dynamic range during the day.
It has a large 6.56-inch LCD screen with a maximum brightness of 800 nits, providing an excellent display effect.
The phone comes with 8GB of RAM, 256GB of storage space, and supports memory expansion to 16GB, making it suitable for daily usage needs.

Weaknesses

The Mediatech 6300 chip is not as exciting compared to the previous models, with only a slight increase in frequency and no upgrade in architecture or process.
It may not be as fast as other smartphones with more powerful chips like Qualcomm 4 Gen 2.
The phone's weight of around 300g may be considered heavy for some users.
There is no headphone jack, which may be a drawback for some users who prefer wired audio.
Read Full Reviews

Samsung Galaxy S21 Ultra

The Samsung Galaxy S21 Ultra is a truly groundbreaking smartphone that boasts some impressive features. The device's display is its standout aspect, boasting the best AMOLED screen we've seen on a phone yet. Battery life is also excellent, especially for a Samsung flagship, and the addition of S Pen stylus support is a welcome feature. The S21 Ultra's camera setup is super versatile, with four cameras that offer excellent image quality in various lighting conditions. However, while the cameras are great, they could be improved with less heavy-handed processing. Night mode rescues low-light shots, but some users may find the processing too aggressive at times. Performance-wise, the S21 Ultra is a powerhouse, with an Exynos 2100 chipset that delivers fast and seamless performance. The addition of stereo speakers and ultrasonic fingerprint reader are also welcome features. However, some compromises have been made to achieve this level of innovation, such as the lack of expandable storage, headphone jack, and charging adapter. Overall, Samsung has succeeded in making this year's flagship feel like a cutting-edge device. If you're invested in keeping up with the newest tech and price isn't an issue, the S21 Ultra deserves serious consideration. While it may have its flaws, the phone's impressive display, excellent battery life, and versatile camera setup make it a top contender in the smartphone market. In conclusion, the Samsung Galaxy S21 Ultra is a bold statement from the brand, showcasing what's possible with innovation and design. It's not perfect, but it's certainly an impressive device that will appeal to those seeking a premium smartphone experience.

Ulefone Armor X31 Pro 5G

The Ulefone Armor X31 Pro 5G is a rugged smartphone designed for outdoor enthusiasts and professionals. With its IP68, IP69K, and MIL-STD-810G certifications, this phone can withstand harsh environments, including water, dust, extreme temperatures, and drops. The device features a 64MP main camera, 25MP infrared night vision camera, and a 6.56-inch 120Hz LCD screen with 800nits brightness. Powered by the Mediatech MT6300 chip, this phone can handle multiple apps and daily usage needs. With 8GB RAM, 256GB storage, and microSD card expansion up to 2TB, the Ulefone Armor X31 Pro 5G is a reliable companion for outdoor adventures.

Need help choosing?

Read our detailed reviews to understand which device is better for your specific needs and budget.

Compare other phones

Explore comparisons between any other phones

Compare phones
VS

Choose two different items to see a detailed comparison of their specifications, performance, and features

Samsung Galaxy S21 Ultra vs Ulefone Armor X31 Pro 5G comparison | LibraSpecs