Xiaomi 12S UltravsOppo K12 Plus

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

Xiaomi
Xiaomi 12S Ultra
12S Ultra
Processor:Qualcomm Snapdragon 8+ Gen1
RAM:8GB
Storage:256GB

Quick Stats

Both phones barely scraped together six hours of screen time, with results surprisingly close overall.
The standout feature of the Xiaomi 12S Ultra is its impressive display with vibrant visuals and smooth motion capabilities.
The Xiaomi 12S Ultra's camera excels in low-light conditions and creative features, but lacks overall quality consistency.
The Xiaomi 12S Ultra's performance is a mixed bag, but ultimately edges out its competitor.
Oppo
Oppo K12 Plus
K12 Plus
Processor:Qualcomm Snapdragon 7 Gen 3 (SM7550-AB)
RAM:8GB
Storage:256GB

Quick Stats

The Oppo K12 Plus's battery life fell short of expectations due to moderate-to-poor endurance and heavy usage impact.
The Oppo K12 Plus boasts an impressive AMOLED display with fast refresh rate and high resolution features.
The Oppo K12 Plus's camera system excels in low-light conditions with excellent image quality and minimal noise.
The Oppo K12 Plus's performance under heavy loads, like gaming, leaves room for improvement significantly.
Key Differences

Processor Speed

Winner
Xiaomi 12S Ultra
3.20 GHz
Oppo K12 Plus
2.63 GHz

RAM

Tie
Xiaomi 12S Ultra
8GB
Oppo K12 Plus
8GB

Storage

Tie
Xiaomi 12S Ultra
256GB
Oppo K12 Plus
256GB

Weight

Winner
Xiaomi 12S Ultra
225g
Oppo K12 Plus
186g
Specifications Comparison
Specification
Xiaomi Xiaomi 12S Ultra
Oppo Oppo K12 Plus
Model
Qualcomm Snapdragon 8+ Gen1
Qualcomm Snapdragon 7 Gen 3 (SM7550-AB)
CPU
1x3.2 GHz Cortex, X2 +3x2.8 GHz Cortex, A710 + 4x2.0 GHz Cortex, A510
1x2.63 GHz Cortex, A715 +3x2.4 GHz Cortex, A715 + 4x1.8 GHz Cortex, A510
Type
Octa-Core
Octa-Core
Nanometer
4
4
Frequency
3.20
2.63
64 Bits
Yes
Yes
GPU
Qualcomm Adreno 730 875 MHz
Qualcomm Adreno 720
RAM
8
8
Type
RAM LPDDR5
LPDDR4X RAM
Capacity
256
256
Type
UFS Storage 3.1
UFS Storage 3.1
SD slot
No
N/A
Fingerprint security
Yes, in screen
Yes, in screen
Fingerprint sensor
Yes
Yes
Proximity sensor
N/A
Yes
Light sensor
Yes
Yes
Accelerometer sensor
Yes
Yes
Compass sensor
Yes
Yes
Gyroscope sensor
Yes
Yes
Barometer sensor
Yes
N/A
Gravity sensor
N/A
Yes
RGB sensor
Yes
N/A
Ultrasonic proximity virtual sensor
Yes
N/A
Audio
Dolby Atmos, Hi-Res Audio, Stereo Speakers, 2 microphones
Hi-Res Audio, Noise cancellation microphone, Stereo Speakers, 2 microphones
Antutu Score
1288403
866863
Antutu Version
Antutu v10
Antutu v10
Antutu Standing
Overall performance better than 92% of devices
Overall performance better than 85% of devices
Cooling system
Yes
Yes
Gaming buttons
No
No
Extras
3160mm² Leaf pulse cooling pump cooling system
N/A

Note: Highlighted specifications show differences between the two devices.

Pros and Cons

Xiaomi 12S Ultra

Strengths

No specific pros listed for this device

Weaknesses

No specific cons listed for this device

Oppo K12 Plus

Strengths

The phone has a good display with a fast refresh rate AMOLED screen.
It comes with stereo speakers providing a nice multimedia experience.
The camera quality is above average, with a 50MP main camera and an 8MP ultra-wide camera.
The phone has a lightweight design making it easy to hold for a long time.
It runs on Color OS 14 which is highly optimized for performance.
The phone's AMOLED screen also features diamond frame design for better protection.

Weaknesses

The phone may not be suitable for heavy gaming due to its average gaming performance.
The frame of the phone is made of plastic and has no antenna lines, which might affect the phone's durability.
The fingerprint sensor is placed quite low on the phone, making it slightly inconvenient to access.
The chin of the phone is slightly larger, affecting its overall aesthetic appeal.
The phone's average frame rate dropped to 37.6 FPS after playing a heavy game for 30 minutes at high quality settings with 60 FPS.
The phone's back temperature reached 41.7°C during heavy gaming, which might be a concern.
Read Full Reviews

Xiaomi 12S Ultra

The Xiaomi 12S Ultra is a dual-camera powerhouse that boasts impressive specs, but its performance is uneven. The phone's main camera, backed by Leica's color science, delivers stunning results with rich and cinematic shots. However, the ultrawide camera struggles to produce accurate colors, particularly when switching between modes. In contrast, the Samsung Galaxy S series, although not as strong in the main camera department, excels with its ultrawide and zoom cameras. The overall color science of the Samsung phone is also more pleasing, especially when capturing skin tones. Battery life is another area where both phones shine. Despite having a slightly lower battery capacity, Xiaomi's 12S Ultra manages to keep up with Samsung's power-hungry device, thanks to its more efficient chip. Wireless charging speeds are also significantly faster on the Xiaomi phone, making it a clear winner in this department. Charging times and software features further sway the balance towards Xiaomi. The company's battery management software is intuitive and helpful, while its charging capabilities outpace those of Samsung. Ultimately, the Xiaomi 12S Ultra is a capable camera phone that edges ahead in some areas but lags behind in others. If you prioritize photography, this phone may be worth considering, but if other features like battery life, charging speed, or software are more important to you, Samsung's offerings might still take the cake. Both phones have their strengths and weaknesses. While Xiaomi takes the lead in some areas, Samsung excels in others. The decision ultimately comes down to your personal priorities.

Oppo K12 Plus

The Oppo K12 Plus is a mid-range 5G phone that boasts a fast refresh rate AMOLED display and a powerful Snapdragon 7 Gen 3 processor. With a 50MP dual camera and lightweight design, this phone promises a seamless multimedia experience. The device also features a 6.7-inch screen, 120Hz refresh rate, and dual stereo speakers. We'll dive deeper into the phone's performance, camera quality, and gaming capabilities in our review, so stay tuned!

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