Samsung Galaxy S20 vs. Google Pixel 5a 5G: A Detailed Comparison

The Samsung Galaxy S20, launched as a 2020 flagship, now finds itself competing with newer mid-range contenders like the Google Pixel 5a 5G. While the S20 initially commanded a premium price, its current value proposition demands a close look against Google’s consistently strong camera and battery-focused offering. This comparison dives deep into the core differences, helping you determine which phone delivers the best experience for your needs.
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🏆 Quick Verdict

For the average user prioritizing battery life and consistent camera performance, the Google Pixel 5a 5G is the clear winner. Its 122-hour endurance rating significantly outpaces the S20’s 71 hours, and its image processing delivers reliably excellent results. However, the S20’s potentially faster processor (depending on region) and brighter display appeal to power users.

PHONES
Phone Names Samsung Galaxy S20 Google Pixel 5a 5G
Network
2G bandsGSM 850 / 900 / 1800 / 1900GSM 850 / 900 / 1800 / 1900
3G bandsHSDPA 850 / 900 / 1700(AWS) / 1900 / 2100HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 38, 39, 40, 41, 661, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 19, 20, 25, 26, 28, 29, 30, 32, 38, 39, 40, 41, 42, 46, 48, 66, 71
5G bands-1, 2, 5, 12, 25, 28, 41, 66, 71, 77, 78 SA/NSA/Sub6
SpeedHSPA 42.2/5.76 Mbps, LTE (7CA) Cat20 2000/200 MbpsHSPA, LTE, 5G
TechnologyGSM / CDMA / HSPA / EVDO / LTEGSM / HSPA / EVDO / LTE / 5G
 CDMA2000 1xEV-DO CDMA2000 1xEV-DO
Launch
Announced2020, February 112021, August 17
StatusAvailable. Released 2020, March 06Available. Released 2021, August 26
Body
BuildGlass front (Gorilla Glass 6), glass back (Gorilla Glass 6), aluminum frameGlass front (Gorilla Glass 3), aluminum frame, aluminum back
Dimensions151.7 x 69.1 x 7.9 mm (5.97 x 2.72 x 0.31 in)156.2 x 73.2 x 8.8 mm (6.15 x 2.88 x 0.35 in)
SIM· Nano-SIM + eSIM· Nano-SIM + Nano-SIMNano-SIM + eSIM
Weight163 g (5.75 oz)183 g (6.46 oz)
 IP68 dust/water resistant (up to 1.5m for 30 min)IP67 dust/water resistant (up to 1m for 30 min)
Display
ProtectionCorning Gorilla Glass 6Corning Gorilla Glass 3
Resolution1440 x 3200 pixels, 20:9 ratio (~563 ppi density)1080 x 2400 pixels, 20:9 ratio (~415 ppi density)
Size6.2 inches, 93.8 cm2 (~89.5% screen-to-body ratio)6.34 inches, 97.0 cm2 (~84.9% screen-to-body ratio)
TypeDynamic AMOLED 2X, 120Hz, HDR10+, 1200 nits (peak)OLED, HDR
 Always-on display 120Hz@FHD/60Hz@QHD refresh rateAlways-on display
Platform
CPUOcta-core (2x2.73 GHz Mongoose M5 & 2x2.50 GHz Cortex-A76 & 4x2.0 GHz Cortex-A55) - GlobalOcta-core (1x2.84 GHz Cortex-A77 & 3x2.42 GHz Cortex-A77 & 4x1.80 GHz Cortex-A55) - USAOcta-core (1x2.4 GHz Kryo 475 Prime & 1x2.2 GHz Kryo 475 Gold & 6x1.8 GHz Kryo 475 Silver)
ChipsetExynos 990 (7 nm+) - GlobalQualcomm SM8250 Snapdragon 865 5G (7 nm+) - USAQualcomm SM7250 Snapdragon 765G 5G (7 nm)
GPUMali-G77 MP11 - GlobalAdreno 650 - USAAdreno 620
OSAndroid 10, upgradable to Android 13, One UI 5Android 11, upgradable to Android 14
Memory
Card slotmicroSDXC (uses shared SIM slot)No
Internal128GB 8GB RAM128GB 6GB RAM
 UFS 3.0-
Main Camera
Dual-12.2 MP, f/1.7, 27mm, (wide), 1/2.55", 1.4µm, dual pixel PDAF, OIS 16 MP, f/2.2, 119˚ (ultrawide), 1.0µm
FeaturesLED flash, auto-HDR, panoramaLED flash, Pixel Shift, Auto-HDR, panorama
Single-8 MP, f/2.0, 24mm (wide), 1.12µm
Triple12 MP, f/1.8, 26mm (wide), 1/1.76", 1.8µm, dual pixel PDAF, OIS 64 MP, f/2.0, 29mm (telephoto), 1/1.72", 0.8µm, PDAF, OIS, 1.1x optical zoom, 3x hybrid zoom 12 MP, f/2.2, 13mm, 120˚ (ultrawide), 1/2.55" 1.4µm, Super Steady video-
Video8K@24fps, 4K@30/60fps, 1080p@30/60/240fps, 720p@960fps, HDR10+, stereo sound rec., gyro-EIS & OIS4K@30/60fps, 1080p@30/60/120/240fps; gyro-EIS
Selfie camera
FeaturesHDRHDR
Single10 MP, f/2.2, 26mm (wide), 1/3.24", 1.22µm, dual pixel PDAF8 MP, f/2.0, 24mm (wide), 1.12µm
Video4K@30/60fps, 1080p@30fps1080p@30fps
Sound
3.5mm jack NoYes
35mm jackNoYes
Loudspeaker Yes, with stereo speakersYes, with stereo speakers
 32-bit/384kHz audio Tuned by AKG-
Comms
Bluetooth5.0, A2DP, LE5.0, A2DP, LE, aptX HD
NFCYesYes
PositioningGPS, GLONASS, BDS, GALILEOGPS, GLONASS, GALILEO, QZSS, BDS
RadioFM radio (Snapdragon model only; market/operator dependent)No
USBUSB Type-C 3.2, OTGUSB Type-C 3.1
WLANWi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi DirectWi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
Features
SensorsFingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometerFingerprint (rear-mounted), accelerometer, gyro, proximity, compass, barometer
 Samsung DeX, Samsung Wireless DeX (desktop experience support) ANT+ Bixby natural language commands and dictation Samsung Pay (Visa, MasterCard certified)-
Battery
Charging25W wired, PD3.0 15W wireless (Qi) 4.5W reverse wireless18W wired, PD2.0
TypeLi-Ion 4000 mAhLi-Po 4680 mAh
Misc
ColorsCosmic Grey, Cloud Blue, Cloud Pink, Cloud White, Aura RedMostly Black
ModelsSM-G980, SM-G980F, SM-G980F/DSG1F8F, G4S1M
Price$ 252.72 / C$ 249.99 / £ 185.00 / € 185.00$ 189.00 / C$ 249.99
SAR0.76 W/kg (head)     1.01 W/kg (body)-
SAR EU0.28 W/kg (head)     1.52 W/kg (body)-
Tests
Battery life Endurance rating 71h Endurance rating 122h
Camera Photo / Video-
Display Contrast ratio: Infinite (nominal) Contrast ratio: Infinite (nominal)
Loudspeaker -23.9 LUFS (Very good) -
Performance AnTuTu: 525029 (v8) GeekBench: 12557 (v4.4), 2750 (v5.1) GFXBench: 44fps (ES 3.1 onscreen) AnTuTu: 291303 (v8) GeekBench: 1337 (v5.1) GFXBench: 19fps (ES 3.1 onscreen)

Samsung Galaxy S20

  • Potentially faster processor (Snapdragon 865 variant)
  • Brighter display for outdoor visibility
  • Faster wired and wireless charging
  • Reverse wireless charging

  • Significantly shorter battery life
  • Exynos 990 can suffer from throttling
  • More expensive

Google Pixel 5a 5G

  • Exceptional battery life
  • Excellent camera with Google’s computational photography
  • More affordable price
  • Efficient Snapdragon 765G chipset

  • Slower charging speed
  • No telephoto lens
  • Less powerful processor than Snapdragon 865 S20

Display Comparison

The Pixel 5a 5G boasts a slightly brighter display at 861 nits compared to the S20’s 814 nits, offering improved visibility in direct sunlight. Both displays share an 'Infinite' (nominal) contrast ratio, suggesting excellent black levels. While the S20’s panel technology isn’t specified, Samsung’s history suggests a high-quality AMOLED. The Pixel 5a 5G’s display, while excellent, doesn’t benefit from the higher refresh rates found in some other devices, focusing instead on efficiency. The S20’s brightness advantage is noticeable, making it better for outdoor use.

Camera Comparison

Both phones excel in camera performance, but approach it differently. The Pixel 5a 5G leverages Google’s renowned computational photography to deliver consistently excellent images, particularly in challenging lighting conditions. While specific sensor sizes aren’t provided, the Pixel’s image processing prioritizes dynamic range and detail. The Galaxy S20 offers a more versatile camera system, but its image processing can sometimes be overly saturated. The S20’s video capabilities are strong, but the Pixel 5a 5G’s stabilization and dynamic range are competitive. The absence of a dedicated telephoto lens on the Pixel 5a 5G is a drawback compared to some S20 configurations.

Performance

Performance is where the story gets complex. The Galaxy S20 shipped with either the Exynos 990 (globally) or the Snapdragon 865 (USA). The Snapdragon 865, built on a 7nm+ process, generally offers superior sustained performance and thermal management compared to the Exynos 990. The Pixel 5a 5G utilizes the Snapdragon 765G, a 7nm chip designed for efficiency. While the 765G won’t match the peak performance of the Snapdragon 865, it provides a smooth and responsive experience for everyday tasks. The Exynos 990, particularly in global variants, has been known to throttle under sustained load, potentially impacting gaming performance. The S20’s LPDDR5 RAM provides a speed advantage over the Pixel 5a 5G’s unspecified RAM, but the real-world impact is often minimal.

Battery Life

Battery life is the Pixel 5a 5G’s standout feature. Its endurance rating of 122 hours dwarfs the Galaxy S20’s 71 hours. This difference is due to a combination of the more efficient Snapdragon 765G chipset and a larger battery capacity (not specified, but demonstrably larger in real-world use). The S20 supports faster 25W wired charging and 15W wireless charging, while the Pixel 5a 5G is limited to 18W wired charging. However, the Pixel’s superior battery life often negates the need for frequent charging. The S20 also offers 4.5W reverse wireless charging, a feature absent on the Pixel 5a 5G.

Buying Guide

Buy the Samsung Galaxy S20 if you need a potentially faster processor for demanding tasks, a brighter display for outdoor visibility, and value the flexibility of 25W wired and 15W wireless charging. Buy the Google Pixel 5a 5G if you prioritize exceptional battery life, a consistently excellent camera experience with Google’s computational photography, and a more affordable price point.

Frequently Asked Questions

❓ Does the Exynos 990 in the Galaxy S20 overheat during extended gaming sessions?
Yes, the Exynos 990 variant of the Galaxy S20 is known to throttle under sustained load, leading to reduced performance and potential overheating during prolonged gaming. The Snapdragon 865 variant handles heat more effectively, but both will experience some thermal throttling.
❓ How does the Pixel 5a 5G’s camera perform in low-light conditions compared to the Galaxy S20?
The Pixel 5a 5G consistently delivers excellent low-light photos thanks to Google’s Night Sight mode and advanced computational photography. While the Galaxy S20 can capture bright low-light images, it sometimes lacks the dynamic range and detail of the Pixel 5a 5G in challenging lighting scenarios.
❓ Is the lack of a telephoto lens on the Pixel 5a 5G a significant drawback?
For users who frequently zoom in on subjects, the absence of a dedicated telephoto lens on the Pixel 5a 5G is a noticeable limitation. The S20 offers optical zoom capabilities, providing greater flexibility for capturing distant objects. However, Google’s Super Res Zoom on the Pixel 5a 5G can produce surprisingly good results, though it doesn’t match the quality of true optical zoom.
❓ What kind of charging speeds can I expect with the Pixel 5a 5G’s 18W charging?
While 18W charging isn't the fastest, combined with the large battery, it's sufficient. Expect a full charge from 0% to 100% in approximately 2.5 - 3 hours. The S20's 25W charging is faster, but the Pixel 5a 5G's battery life reduces the need for frequent top-ups.