Samsung Galaxy S21+ 5G vs Xiaomi Redmi Note 12 Pro 4G - Detailed Phone Comparison

Detailed Comparison

Specification

General

Launch Date January 29, 2021 April 11, 2023
Release Year 2021 2023

Physical

Volume 95.23 cm³ 101.21 cm³
Screen Size to Weight Ratio 3.35 "/g 3.31 "/g
Weight 200 g 201.8 g
Height 161.5 mm 164.2 mm
Width 75.6 mm 76.1 mm
Thickness 7.8 mm 8.1 mm
Foldable Design No No
Available Colors
  • Phantom Violet
  • Phantom Pink
  • Phantom Black
  • Phantom Silver
  • Phantom Gold
  • Phantom Red
  • Polar White
  • Graphite Gray
  • Star Blue
  • Ice blue

Display

Screen Size 6.7 " 6.67 "
Resolution 1080 x 2400 1080 x 2400
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 88.8 % 86 %
Pixel Density 394 PPI 395 PPI
Refresh Rate 120 Hz 120 Hz
Typical Brightness N/A N/A
HBM Brightness N/A 700 nits
Peak Brightness 1300 nits 1100 nits

Hardware

Battery Capacity per Screen Area 106.93 mAh/in² 112.39 mAh/in²
Battery Density 50.4 mAh/cm³ 49.4 mAh/cm³
Battery Capacity 4800 mAh 5000 mAh
NFC Support Yes Yes
Chipset Exynos 2100 (5 nm) - International Qualcomm SM7150 Snapdragon 732G (8 nm)
CPU Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International Octa-core (2x2.2 GHz Kryo 470 Gold & 6x1.8 GHz Kryo 470 Silver)
GPU Mali-G78 MP14 - International Adreno 618

Connectivity

USB Version 3.2 2.0
OTG Support 1 1
DisplayPort
DisplayPort Version N/A N/A
USB Features USB Type-C 3.2, OTG USB Type-C 2.0, OTG

Software

Operating System Android Android
Initial OS Version 11 11
Maximum OS Version 15

Comparison Summary

1. Specifications Comparison

FeatureSamsung Galaxy S21+ 5GXiaomi Redmi Note 12 Pro 4GPractical Impact
Design
Dimensions161.5 x 75.6 x 7.8 mm164.2 x 76.1 x 8.1 mmXiaomi is slightly taller and thicker, may feel less sleek in hand.
Weight200g201.8gNegligible difference; both feel similar in weight.
Display
Size6.7"6.67"Minimal difference, both provide similar viewing experiences.
Resolution1080 x 24001080 x 2400Identical sharpness; both offer clear, crisp visuals.
PPI394395Negligible difference; both displays are equally sharp.
TechnologyAMOLEDAMOLEDIdentical vibrant colors and deep blacks.
Refresh Rate120Hz120HzBoth offer smooth scrolling and animations.
Brightness1300 nits1200 nitsS21+ is slightly brighter, better for outdoor visibility under sunlight.
Performance
ChipsetExynos 2100 (5 nm)Snapdragon 732G (8 nm)S21+ has a significantly more powerful chip for smoother multitasking and demanding apps/games.
AnTuTu Score749,100397,200S21+ is noticeably faster in real-world usage.
GPUMali-G78 MP14Adreno 618S21+ provides superior graphics performance for gaming.
Camera
Main Camera12MP f/1.8, 1/1.76"108MP f/1.9, 1/1.52"Xiaomi captures more detail in good light; S21+ excels in low light and has better dynamic range.
Telephoto64MP f/2.0N/AS21+ offers optical zoom capabilities.
Wide AngleN/A8MP f/2.2Xiaomi provides ultrawide shots.
Macro LensN/A5MP f/2.4Xiaomi provides close-up shots.
Depth SensorN/A2MP f/2.4Xiaomi offers better portrait mode with depth mapping.
Front Camera10MP f/2.216MP f/2.45Xiaomi has more megapixels for selfies, but S21+ performs better in low light due to larger pixels and aperture.
Wide + Macro12.2 MP f/2.2N/AS21+ can take ultrawide and macro images with this camera.
VideoUp to 8K@24fpsUp to 4K@30fpsS21+ offers higher video resolution and better stabilization.
DXOMark Score111 (Mobile)N/AS21+ has a certified higher camera quality
OISYesNoS21+ has OIS, minimizing blurry shots and shaking videos.
Battery
Capacity4800 mAh5020 mAhRedmi has slightly larger battery, potentially longer battery life.
Charging25W67WRedmi charges much faster than S21+.
Wireless Charging15WNoS21+ supports wireless charging.
Reverse Wireless Charging4.5WNoS21+ can charge other wireless devices.
Software & Connectivity
OSAndroid 11 (Upgradable to 15)Android 11S21+ is confirmed to receive up to Android 15.
Wi-FiWi-Fi 6Wi-Fi 5 (ac)S21+ has faster Wi-Fi speeds and better performance in crowded areas.
Bluetooth5.05.1Redmi has a slightly newer Bluetooth version with minor differences.
GPSMore satellite supportStandard GPSS21+ offers more precise location tracking with dual-band GPS.
SIMDual SIM + eSIMDual SIMS21+ offers eSIM functionality in addition to physical SIM slots.
Storage & Audio
Internal Storage128/256 GB128/256 GBBoth available in similar storage sizes.
RAM8 GB6/8 GBS21+ always offers 8 GB, while the Redmi may have 6GB in some variants.
Expandable StorageNoNoNeither phone offers SD card support.
AudioDolby Atmos, Hi-Res AudioHi-Res AudioS21+ provides enhanced audio quality with Dolby Atmos.
Security & Build
Fingerprint SensorBasicSide-mountedRedmi offers a more convenient and faster fingerprint reader.
Screen ProtectionGorilla Glass VictusGorilla Glass 5S21+ has stronger screen protection.

2. Key Differences Analysis

Samsung Galaxy S21+ 5G Advantages:

  • Superior Performance: The Exynos 2100 chipset offers significantly better performance for demanding tasks, gaming, and smoother multitasking.
  • Better Camera System: While the Redmi has a high-resolution main sensor, the S21+ has a more versatile camera system, including a telephoto lens, better low-light performance, and higher video quality.
  • Wireless Charging & Reverse Wireless Charging: These are convenient for those who use wireless charging accessories and need to top up other devices.
  • Advanced Connectivity: Wi-Fi 6 and more satellite support for GPS provide faster, more reliable connections and accurate location tracking.
  • Future-Proof Software: Guaranteed Android updates up to version 15.
  • Enhanced Audio: Dolby Atmos and a noise-canceling microphone offer superior sound quality.
  • Superior Screen Protection: Gorilla Glass Victus provides greater drop and scratch protection.
  • Camera OIS: Optical image stabilization for better images and video, especially in low light.

Xiaomi Redmi Note 12 Pro 4G Advantages:

  • Faster Charging: 67W charging is considerably faster than the S21+'s 25W, useful for those who need quick power-ups.
  • Larger Battery: A slightly bigger battery might offer a bit more battery life.
  • Ultrawide Camera: Adds versatility with wide-angle shots.
  • Side-Mounted Fingerprint Sensor: A faster and more convenient placement of the fingerprint sensor.
  • Macro and Depth Sensor: Offers more options for creative photography.

Significant Trade-offs:

  • The S21+ sacrifices fast charging for better overall performance, wireless charging, and a more refined camera experience.
  • The Redmi, while having faster charging, compromises on performance, camera versatility, and advanced connectivity.
  • The S21+ lacks a dedicated macro lens for extreme close-ups.
  • The Redmi lacks wireless charging.

3. User Profiles & Recommendations

Samsung Galaxy S21+ 5G is ideal for:

  • Power users and gamers: Those who need the fastest performance and smooth multitasking for demanding apps and games.
  • Photography enthusiasts: Users who value a versatile camera system with excellent image quality, especially in low light, and require optical zoom.
  • Users who value advanced features: Such as wireless charging, Dolby Atmos audio, and eSIM support.
  • Users who prioritize video quality: Those who want to shoot high-quality video.

Xiaomi Redmi Note 12 Pro 4G is ideal for:

  • Users on a budget: Those seeking good value for money with a focus on essential features.
  • Users needing long battery life: Those who need a larger battery and fast charging.
  • Casual photographers: Users who want a variety of camera options, including ultrawide and macro, though not as sophisticated as the S21+.
  • Users who prefer a side-mounted fingerprint sensor: Those who find the side-mounted sensor more convenient.

Use Cases:

  • S21+: Gaming, professional photography and video, multitasking between heavy apps, travel (reliable GPS, eSIM).
  • Redmi Note 12 Pro 4G: Daily social media, casual photography, general use on the go, long work days without charging.

4. Decision Framework

Key Questions for Buyers:

  1. Performance Priority: Do you need the fastest performance for gaming and demanding applications, or is general usage sufficient?
  2. Camera Versatility: Do you need a versatile camera with telephoto zoom, or are you happy with standard, ultrawide, and macro options?
  3. Charging & Battery: Do you prioritize fast charging above all else, or is wireless charging and better battery life preferred?

Scenario-Based Recommendations:

  • Scenario 1: Heavy Gaming & Performance: Choose the Samsung Galaxy S21+ 5G for its superior processing power and graphics.
  • Scenario 2: Budget Conscious, All Day Battery: Choose the Xiaomi Redmi Note 12 Pro 4G for its better value and fast charging.
  • Scenario 3: Camera Variety & Quality: Choose the Samsung Galaxy S21+ 5G for overall better image quality, versatility and better zoom.
  • Scenario 4: Long lasting software support: Choose the Samsung Galaxy S21+ 5G for guaranteed long lasting software updates.

My Choice

If I were choosing between these two phones, I would personally choose the Samsung Galaxy S21+ 5G.

Here's why:

While the Xiaomi Redmi Note 12 Pro 4G offers a compelling package, especially with its fast charging and larger battery, my personal priorities lean more towards performance and camera quality. The Exynos 2100 chipset in the S21+ provides a significant advantage in terms of speed and responsiveness, which is critical for my usage involving multitasking and gaming. Additionally, the more versatile camera system with the telephoto lens and better low-light performance aligns with my needs as someone who values a higher quality photography experience. Also, the S21+ having confirmed Android 15 is a big plus. The wireless charging and advanced GPS is an added convenience.

Although fast charging on the Xiaomi is appealing, the superior performance, overall camera quality, and advanced features of the S21+ are more important to me. For someone looking for a more budget-friendly and fast charging phone, the Redmi Note 12 Pro 4G would be a great option. However, the Samsung Galaxy S21+ 5G, despite being older, still offers a more complete and premium experience that aligns better with my needs and preferences.

Emily Harper
Emily Harper

Technology Insights Specialist

Dedicated technology writer specializing in mobile device analysis and technology communication. Expert at translating complex smartphone features into clear, actionable insights for diverse audiences.

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