Samsung Galaxy S21 5G vs HTC U23 Pro - Detailed Phone Comparison

Detailed Comparison

Specification

General

Launch Date January 29, 2021 May 18, 2023
Release Year 2021 2023

Physical

Volume 85.33 cm³ 114.32 cm³
Screen Size to Weight Ratio 3.67 "/g 3.27 "/g
Weight 169 g 205 g
Height 151.7 mm 166.6 mm
Width 71.2 mm 77.1 mm
Thickness 7.9 mm 8.9 mm
Foldable Design No No
Available Colors
  • Phantom White
  • Phantom Gray
  • Phantom Violet
  • Phantom Pink
  • Snow White
  • Coffee Black

Display

Screen Size 6.2 " 6.7 "
Resolution 1080 x 2400 1080 x 2400
Aspect Ratio 20:9 20:9
Screen-to-Body Ratio 85.9 % 84.4 %
Pixel Density 421 PPI 393 PPI
Refresh Rate 120 Hz 120 Hz
Typical Brightness N/A N/A
HBM Brightness N/A N/A
Peak Brightness 1300 nits N/A

Hardware

Battery Capacity per Screen Area 104.06 mAh/in² 102.47 mAh/in²
Battery Density 46.88 mAh/cm³ 40.24 mAh/cm³
Battery Capacity 4000 mAh 4600 mAh
NFC Support Yes Yes
Chipset Exynos 2100 (5 nm) - International Qualcomm SM7450-AB Snapdragon 7 Gen 1 (4 nm)
CPU Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International Octa-core (1x2.4 GHz Cortex-A710 & 3x2.36 GHz Cortex-A710 & 4x1.8 GHz Cortex-A510)
GPU Mali-G78 MP14 - International Adreno 644

Connectivity

USB Version 3.2 3.0
OTG Support 1
DisplayPort
DisplayPort Version N/A N/A
USB Features USB Type-C 3.2, OTG USB Type-C 3.0

Software

Operating System Android Android
Initial OS Version 11 13
Maximum OS Version 15

Comparison Summary

1. Specifications Comparison

FeatureSamsung Galaxy S21 5GHTC U23 ProPractical Impact
Design
Launch Date2021-01-292023-05-18HTC U23 Pro is significantly newer, potentially offering better long-term software support.
Dimensions151.7 × 71.2 × 7.9 mm166.6 × 77.1 × 8.9 mmS21 is more compact and pocketable; U23 Pro is larger and may be less comfortable for one-handed use.
Weight169g205gS21 is significantly lighter, making it more comfortable for extended use.
Display
Size6.2"6.7"U23 Pro offers a larger viewing area for media and multitasking.
Resolution1080x24001080x2400Both offer the same sharpness.
Pixel Density421 PPI393 PPIS21 has a slightly sharper display, though the difference is subtle.
TechnologyAMOLEDOLEDBoth provide vibrant colors and deep blacks.
Refresh Rate120Hz120HzBoth offer smooth scrolling and animations.
Brightness1300 nits0 nitsS21 offers drastically better outdoor visibility; the brightness for the HTC U23 Pro is missing
Performance
ChipsetExynos 2100 (5 nm)Snapdragon 7 Gen 1 (4 nm)Different chipsets; S21 may have a slight performance edge based on benchmark scores but U23 Pro's is more efficient.
AnTuTu Score749,100699,600S21 has slightly higher theoretical performance.
GPUMali-G78 MP14Adreno 644Different GPUs, real-world gaming performance may vary.
Camera
Main Camera Resolution12MP108MPU23 Pro captures more detailed photos; S21's sensor has larger pixel size.
Main Camera Aperturef/1.8f/1.7U23 Pro has a slightly wider aperture allowing more light.
Telephoto/Portrait64MPNoneS21 offers dedicated optical zoom capabilities.
Selfie Camera Resolution10MP32MPU23 Pro captures more detailed selfies.
Selfie Camera Aperturef/2.2f/2.45S21's wider aperture may perform slightly better in low light.
Wide Angle LensNone8MPU23 Pro can capture wider scenes.
Portrait ModeNone5MPU23 Pro has a dedicated depth sensor for portrait photography.
Macro LensNone2MPU23 Pro can take close-up macro shots.
Wide Angle + Macro12.2MPNoneS21 offers both wide-angle and macro capabilities in one sensor.
VideoUp to 8K@24fpsUp to 4K@30fpsS21 offers significantly higher video recording resolution, and more options for fps.
DxOMark Mobile111Not TestedS21's camera is professionally tested and rated.
DxOMark Selfie132Not TestedS21's selfie camera is also tested and rated.
Battery
Capacity4000mAh4600mAhU23 Pro should offer longer battery life.
Charging25W wired, 15W wireless30W wired, 15W wirelessU23 Pro charges faster with the wired charger.
Battery FeaturesReverse charging, 15W wireless, 4.5W reverse wireless, no charger in-boxNon-removable, 15W wireless, 5W reverse wirelessS21 offers reverse charging while HTC U23 Pro has slightly faster reverse wireless charging.
Software
OSAndroid 11 (upgradable to 15)Android 13U23 Pro ships with a newer OS, likely offering more extended support.
Connectivity
WiFiWiFi 6WiFi 6Both support modern WiFi standards.
Bluetooth5.05.2U23 Pro has a more recent Bluetooth version.
GPSL1+L5, E1+E5aBasic GPSS21 has more accurate GPS with dual-band and more constellations.
SIMDual SIMDual SIMBoth support two SIM cards simultaneously.
Storage
Internal Storage128/256GB256GBU23 Pro has only one 256 GB option.
RAM8GB8GB or 12GBU23 Pro offers a 12GB RAM option for heavy users.
Expandable StorageNoNoNeither phone supports microSD cards.
Audio
Audio FeaturesDolby Atmos, Noise cancellation, Stereo SpeakersBasic audioS21 has a richer audio experience with advanced features.
Security
Securitybasic fingerprint sensorside-mounted fingerprint sensorU23 Pro has a more modern side-mounted fingerprint sensor.
Build Quality
Screen ProtectionGorilla Glass VictusGorilla Glass VictusBoth have good protection for the screen.
Sensors
SensorsBarometer, Hall, GeomagneticGravityS21 offers a more comprehensive set of sensors.

2. Key Differences Analysis

Samsung Galaxy S21 5G Advantages:

  • More Compact and Lighter: Easier to handle and carry in a pocket.
  • Superior Display Brightness: Significantly better visibility in bright sunlight.
  • Higher Performance: Slightly better AnTuTu benchmark scores, although real-world impact is marginal.
  • Better Telephoto Camera: Offers dedicated optical zoom.
  • Higher Video Recording Resolution: Supports up to 8K video.
  • Tested Camera: DxOMark results for both main and selfie camera.
  • Superior Audio Features: Includes Dolby Atmos, stereo speakers, and noise cancellation.
  • More Comprehensive GPS: Dual-band and more constellations for better location accuracy.
  • More Comprehensive Sensor Suite: Includes Barometer, Hall, and Geomagnetic sensors.
  • Wireless Charging: More options for wireless charging

Practical Implications: The S21 is better suited for users who need a compact phone with an excellent screen, powerful camera with optical zoom capabilities, high-quality video recording, and superior audio features, while still having a decent performance.

HTC U23 Pro Advantages:

  • Newer Device: Launched over two years after the S21, likely with better long-term software support.
  • Larger Display: Provides a more immersive viewing experience.
  • Larger Battery: Should offer longer battery life.
  • Higher Resolution Main Camera: Captures more detailed photos and more advanced set of cameras.
  • Faster Wired Charging: Recharges the battery faster.
  • Side-Mounted Fingerprint Reader: More advanced fingerprint sensor.
  • More RAM option: 12 GB RAM option is available.

Practical Implications: The U23 Pro is ideal for users who prioritize a larger screen, extended battery life, higher resolution images, a newer device with modern software, and more RAM for heavy multitasking.

Significant Trade-offs:

  • S21: Sacrifices screen size and battery life for a more compact design, and its camera system lacks a wide-angle and macro lens.
  • U23 Pro: Sacrifices brightness, overall performance, audio quality, and telephoto zoom for larger display, battery life, and better main camera.

3. User Profiles & Recommendations

Samsung Galaxy S21 5G:

  • Ideal User: Users who value portability, screen quality, camera performance, audio features and video quality while maintaining a decent performance.
  • Use Cases:
    • Frequent travelers who need a compact phone with a great camera.
    • Users who watch a lot of videos outdoors, benefitting from the high brightness.
    • Users who make video calls.
    • Users who want a phone that can do it all but in a smaller package.

HTC U23 Pro:

  • Ideal User: Users who prioritize long battery life, a larger screen, and high-resolution photography.
  • Use Cases:
    • Users who frequently consume media on their phone.
    • Users who need extended battery life for long days away from a charger.
    • Users who want more detailed photos from their main camera and macro.
    • Users who multitask or play intensive games.

Price-to-Value Ratio: The Samsung Galaxy S21 5G is likely to be available at a lower price due to its older age, making it a good value if you can find a good deal. The HTC U23 Pro will be more expensive but will offer the more modern features of the two, though without the tested camera quality and brighter screen.

4. Decision Framework

Key Questions to Consider:

  1. How important is portability and brightness? If you prioritize a compact phone with a very bright display, the S21 is better.
  2. Is long battery life and large display size more important? If you need the battery to last and prefer a larger viewing area, the U23 Pro is the better choice.
  3. Do you need Telephoto zoom and 8k video, or a better main camera with multiple camera options? If the former, the S21 is better; If the latter, then the U23 Pro wins.

Scenario-Based Recommendations:

  • Scenario 1: Outdoor Enthusiast: If you spend a lot of time outdoors, the Samsung Galaxy S21 5G is superior due to its high brightness screen.
  • Scenario 2: Media Lover: If you mainly watch videos or play games, the HTC U23 Pro with its larger screen and battery is more suitable.
  • Scenario 3: Power User: If you constantly multitask and need a phone that lasts all day, the HTC U23 Pro with its larger battery and RAM options is a better choice.
  • Scenario 4: Casual User: If you just need a reliable phone for day-to-day tasks and the price is a big factor, the Samsung Galaxy S21 5G offers great features at a better value (if available at a lower price), but ensure its brightness is still fine for your needs.

My Choice

If I had to choose, I would go with the Samsung Galaxy S21 5G. While the HTC U23 Pro has some strong points, especially the larger battery and newer software, the S21's brighter display, superior audio, better camera (especially the telephoto capabilities), and significantly more accurate GPS are more aligned with my needs.

The compact design is also more appealing to me personally as I value portability. I also appreciate the tested camera quality and 8k video recording which make it more versatile for content creation. While the U23 Pro has a better main camera, the inclusion of the telephoto camera in the S21 makes it more versatile.

Additionally, since both do not have expandable storage, and I am fine with the 256GB version of the S21, I don't see a need to get the U23 Pro. The lack of a brightness value for the U23 Pro and the lack of a DXOMark rating also make me suspicious of its capabilities in that area.

Even though the S21 is an older model, its advantages make it a more well-rounded device for my particular needs.

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.

Key Strengths:

  • Mobile technology analysis
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Bridging technical complexity with engaging, accessible narratives.