Samsung Galaxy S21 FE 5G vs Xiaomi Redmi Note 12S - Detailed Phone Comparison

Detailed Comparison

Specification

General

Launch Date January 7, 2022 April 26, 2023
Release Year 2022 2023

Physical

Volume 91.64 cm³ 95.71 cm³
Screen Size to Weight Ratio 3.62 "/g 3.65 "/g
Weight 177 g 176 g
Height 155.7 mm 159.9 mm
Width 74.5 mm 73.9 mm
Thickness 7.9 mm 8.1 mm
Foldable Design No No
Available Colors
  • White
  • Graphite
  • Lavender
  • Olive
  • Ice Blue
  • Onyx Black
  • Pearl Green

Display

Screen Size 6.4 " 6.43 "
Resolution 1080 x 2340 1080 x 2400
Aspect Ratio 19.5:9 20:9
Screen-to-Body Ratio 86.7 % 84.5 %
Pixel Density 403 PPI 409 PPI
Refresh Rate 120 Hz 90 Hz
Typical Brightness N/A N/A
HBM Brightness N/A 700 nits
Peak Brightness N/A 1000 nits

Hardware

Battery Capacity per Screen Area 109.86 mAh/in² 120.93 mAh/in²
Battery Density 49.11 mAh/cm³ 52.24 mAh/cm³
Battery Capacity 4500 mAh 5000 mAh
NFC Support Yes Yes
Chipset Qualcomm SM8350 Snapdragon 888 5G (5 nm) - Version 1 Mediatek MT6781 Helio G96 (12 nm)
CPU Octa-core (1x2.84 GHz Cortex-X1 & 3x2.42 GHz Cortex-A78 & 4x1.80 GHz Cortex-A55) - Version 1 Octa-core (2x2.05 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55)
GPU Adreno 660 - Version 1 Mali-G57 MC2

Connectivity

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

Software

Operating System Android Android
Initial OS Version 12 13
Maximum OS Version 16

Comparison Summary

Alright, let's dive deep into this head-to-head between the Samsung Galaxy S21 FE 5G and the Xiaomi Redmi Note 12S. On paper, they're both smartphones, but they target different user needs and price points, which we'll see once we break down the specs.

1. Specifications Breakdown

Here's a detailed look at how these phones stack up, emphasizing real-world implications:

FeatureSamsung Galaxy S21 FE 5GXiaomi Redmi Note 12SReal-World Implications
DESIGN
Launch Date2022-01-072023-04-26Xiaomi is newer by over a year; potential for longer software support.
Dimensions155.7 x 74.5 x 7.9 mm159.9 x 73.9 x 8.1 mmSamsung is slightly shorter, Xiaomi is a bit taller and slimmer; both are very similar and should feel almost the same in hand.
Weight177g176gVirtually identical weight; both feel light for most users.
DISPLAY
Size6.4"6.43"Almost identical screen size; negligible difference.
Resolution1080 x 23401080 x 2400Similar resolution; both offer sharp images for media, games and everyday use.
Pixel Density (PPI)403409Very similar pixel density; both offer detailed displays.
TechnologyAMOLEDAMOLEDBoth provide vibrant colors, deep blacks, and excellent viewing angles.
Refresh Rate120Hz90HzSamsung has smoother animations and transitions, making scrolling feel more fluid.
Brightness1300 nits1000 nitsSamsung is noticeably brighter; significantly better outdoor visibility in sunlight.
PERFORMANCE
ChipsetSnapdragon 888 (5nm)Mediatek Helio G96 (12nm)Samsung offers drastically superior performance, capable of handling demanding tasks and games with ease.
AnTuTu Score923,836412,400Samsung provides a much snappier experience; faster app loading, better multitasking, and enhanced gaming performance.
GPUAdreno 660Mali-G57 MC2Samsung has a much more powerful GPU, better gaming experience and smoother graphics
BATTERY
Capacity4500mAh5000mAhXiaomi has a slightly larger battery; longer battery life, especially during heavy usage.
Charging25W Fast Charging33W Fast ChargingXiaomi charges faster, reducing time spent tethered to a power outlet.
FeaturesWireless Charging, Reverse Wireless ChargingReverse ChargingSamsung offers more versatile charging options but doesn't include a charger in the box.
CAMERA
Main Camera12MP (1/1.76", 1.8µm)108MP (1/1.52", 0.7µm)Xiaomi has much higher resolution main sensor; theoretically captures more details (though not always better overall image quality).
Telephoto/Portrait8MP (1.0µm)NoneSamsung offers optical zoom and portrait capabilities, lacking in Xiaomi.
Wide Angle13MP (1/3.06", 1.12µm)8MPXiaomi has a wide-angle lens, which is useful for landscape photography; Samsung offers the same functionality on the combined "wide angle + macro"
Macro LensNone2MPXiaomi includes a dedicated macro lens for extreme close-ups, but with low resolution.
Selfie Camera32MP (1/2.8", 0.8µm)16MPSamsung takes higher-resolution selfies; better detail and overall clarity.
Video4K@60fps, HDR, EIS1080p@30fpsSamsung records higher quality video, including 4K resolution and better stabilization.
DxOMarkMobile: 117, Selfie: 127Not AvailableSamsung has more capable camera for photo and video capturing.
SOFTWARE
OSAndroid 12 (upgradable to 16)Android 13Xiaomi has a slightly newer version of Android, although Samsung will get updates up to Android 16
CONNECTIVITY
WiFiWi-Fi 6 (802.11ax)Wi-Fi 5 (802.11ac)Samsung has faster WiFi speeds and better performance in crowded networks.
BluetoothBluetooth 5.0Bluetooth 5.2Xiaomi has a newer Bluetooth version, slightly faster speeds and better battery consumption.
STORAGE
Internal128 GB / 256 GB64 GB / 128 GB / 256 GBBoth offer similar maximum storage; Xiaomi has an additional entry level configuration at 64GB.
RAM6 GB / 8 GB6 GB / 8 GBBoth come with configurations for smooth multitasking.
Expandable StorageNoNoNo ability to expand storage via microSD.
AUDIO
Audio QualityDolby Atmos, Noise cancellation microphoneHi-Res AudioSamsung has the Dolby Atmos advantage, plus clearer call, better audio separation.
SECURITY
SecurityBasic fingerprint sensorSide-mounted fingerprint sensorXiaomi fingerprint is more responsive and convenient to use.
BUILD
Screen ProtectionGorilla Glass VictusGorilla Glass 3Samsung has much better scratch and drop protection; more durable display.
SENSORS
SensorsComprehensive sensor suite (barometer)Comprehensive sensor suiteSamsung offers more environmental sensors, while both are equipped for general functionality and gaming.

2. Key Insights

Samsung Galaxy S21 FE 5G Strengths:

  • Performance Powerhouse: The Snapdragon 888 chipset is a major advantage, offering significantly faster performance for gaming, multitasking, and demanding apps.
  • Superior Display: Its 120Hz AMOLED screen is smoother and much brighter, making it better for outdoor use.
  • Advanced Camera System: The S21 FE excels in video recording and includes a versatile telephoto lens, which the Xiaomi lacks.
  • Premium Features: Wireless charging, reverse wireless charging, and a more robust build quality provide a richer user experience.

Xiaomi Redmi Note 12S Strengths:

  • Bigger Battery: The larger 5000mAh battery offers potentially longer battery life, especially during heavy usage.
  • Faster Charging: The 33W fast charging ensures shorter downtime.
  • High-Resolution Main Camera: The 108MP main camera can capture high-detail images, although overall image quality may not be as consistent as the S21 FE in all conditions.
  • Newer Operating System: Ships with Android 13 out of the box, but that only matters if the Samsung won't receive the Android 16 update.

Trade-offs:

  • Samsung: Less battery capacity and slower charging. No charger in the box.
  • Xiaomi: Significantly inferior processing power, lower display quality, and less versatile cameras.

3. User Profiles and Recommendations

  • Samsung Galaxy S21 FE 5G: Ideal for power users, gamers, and anyone who values performance, display quality, and a capable camera system. If you want the best overall experience and are willing to trade some battery life and charger, this is the clear choice.
  • Xiaomi Redmi Note 12S: A budget-friendly option suitable for everyday users who prioritize battery life, fast charging, and don't need high-end performance. It's a good choice for those who primarily use their phones for social media, browsing, and casual photography.

4. Buying Decision Framework

Here are three questions to guide your decision:

  1. How important is raw performance for me? If you are planning on playing demanding games and using resource-intensive apps, the S21 FE is the better option. If you are looking for a budget-friendly phone for calls, text and emails the Redmi Note 12S will suit you.
  2. Do I need an outstanding display and camera? If so, the S21 FE's superior screen brightness and versatile camera system will be more satisfying. If you are planning on using the phone under direct sunlight, the S21 FE is a must.
  3. What's my budget? If you're on a strict budget, the Xiaomi Redmi Note 12S is the more affordable choice, though you'll be compromising in key areas.

Scenario-Based Recommendations:

  • The Gamer/Power User: Go for the Samsung Galaxy S21 FE 5G for its processing power, superior display, and advanced features.
  • The Casual User/Budget Conscious: The Xiaomi Redmi Note 12S offers good battery life and fast charging at a more accessible price.
  • The Photography Enthusiast: The Samsung Galaxy S21 FE 5G’s telephoto and video quality will be more appealing.

Which One Would I Choose and Why?

If I were choosing between these two phones, I'd personally go with the Samsung Galaxy S21 FE 5G, without hesitation. Here’s why:

While the Xiaomi Redmi Note 12S has a larger battery and faster charging, I need a phone that can keep up with my daily use which includes resource-heavy apps, lots of multitasking, and gaming. For these use cases, the Snapdragon 888 chipset and the superior display of the S21 FE are a must for me. The better camera system is just a bonus.

While the S21 FE lacks a charger in the box and has slightly less battery capacity, I can always mitigate this with a separate charger and by having a power bank handy. For me, the overall experience and consistent performance outweigh these small drawbacks.

In my view, the S21 FE is not just a good phone, it is a powerful tool that I know it will be able to handle my everyday tasks seamlessly.

Alex Griffin
Alex Griffin

Technology analyst specializing in mobile devices and consumer electronics.

Core Expertise

  • Mobile technology analysis
  • Consumer electronics evaluation
  • Technical specification interpretation
  • User experience insights

Professional Mission Empowering readers to make informed technology decisions by transforming intricate specifications into understandable, practical guidance.

Demystifying technology, one device at a time.