Asus Zenfone 9 vs Samsung Galaxy S23: The Ultimate Showdown

The smartphone market is packed with options, but the Asus Zenfone 9 and Samsung Galaxy S23 stand out as compelling choices. Both offer premium features and performance, but cater to slightly different needs. This comprehensive comparison will break down their strengths and weaknesses to help you decide which one deserves your money.
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🏆 Quick Verdict

The Galaxy S23 takes the crown with its brighter display, more refined software, and slightly better overall camera system. However, the Zenfone 9 offers a more compact form factor and a surprisingly competitive price, making it a strong contender for those prioritizing portability and value.

PHONES
Phone Names Asus Zenfone 9 Samsung Galaxy S23
Network
2G bandsGSM 850 / 900 / 1800 / 1900GSM 850 / 900 / 1800 / 1900
3G bandsHSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100
4G bands1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28, 34, 38, 39, 40, 41, 42 - A version1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 38, 39, 40, 41, 66 - International
5G bands1, 2, 3, 5, 7, 8, 12, 20, 28, 38, 77, 78 - A version1, 2, 3, 5, 7, 8, 12, 20, 25, 28, 38, 40, 41, 66, 75, 77, 78 SA/NSA/Sub6 - International
SpeedHSPA 42.2/5.76 Mbps, LTE (5CA) Cat20 2000/211 Mbps, 5G 4.5/0.9 GbpsHSPA, LTE (up to 7CA), 5G
TechnologyGSM / HSPA / LTE / 5GGSM / CDMA / HSPA / EVDO / LTE / 5G
 1, 2, 3, 5, 7, 8, 12, 20, 25, 28, 38, 40, 41, 66, 71, 77, 78 - C version1, 7, 25, 28, 41, 66, 71, 78, 258, 260, 261 SA/NSA/Sub6/mmWave - USA
Launch
Announced2022, July 282023, February 01
StatusAvailable. Released 2022, September 15Available. Released 2023, February 17
Body
BuildGlass front (Gorilla Glass Victus), plastic back, aluminum frameGlass front (Gorilla Glass Victus 2), glass back (Gorilla Glass Victus 2), aluminum frame
Dimensions146.5 x 68.1 x 9.1 mm (5.77 x 2.68 x 0.36 in)146.3 x 70.9 x 7.6 mm (5.76 x 2.79 x 0.30 in)
SIMNano-SIM + Nano-SIM· Nano-SIM + eSIM· Nano-SIM + Nano-SIM + eSIM (max 2 at a time)
Weight169 g (5.96 oz)168 g (5.93 oz)
 IP68 dust/water resistant (up to 1.5m for 30 min)IP68 dust/water resistant (up to 1.5m for 30 min) Armor aluminum frame with tougher drop and scratch resistance (advertised)
Display
ProtectionCorning Gorilla Glass VictusCorning Gorilla Glass Victus 2
Resolution1080 x 2400 pixels, 20:9 ratio (~445 ppi density)1080 x 2340 pixels, 19.5:9 ratio (~425 ppi density)
Size5.9 inches, 84.4 cm2 (~84.6% screen-to-body ratio)6.1 inches, 90.1 cm2 (~86.8% screen-to-body ratio)
TypeSuper AMOLED, 120Hz, HDR10+, 1100 nits (peak)Dynamic AMOLED 2X, 120Hz, HDR10+, 1200 nits (HBM), 1750 nits (peak)
 Always-on displayAlways-on display
Platform
CPUOcta-core (1x3.19 GHz Cortex-X2 & 3x2.75 GHz Cortex-A710 & 4x1.80 GHz Cortex-A510)Octa-core (1x3.36 GHz Cortex-X3 & 2x2.8 GHz Cortex-A715 & 2x2.8 GHz Cortex-A710 & 3x2.0 GHz Cortex-A510)
ChipsetQualcomm SM8475 Snapdragon 8+ Gen 1 (4 nm)Qualcomm SM8550-AC Snapdragon 8 Gen 2 (4 nm)
GPUAdreno 730Adreno 740
OSAndroid 12, upgradable to Android 14Android 13, up to 4 major Android upgrades, One UI 8
Memory
Card slotNoNo
Internal128GB 6GB RAM, 128GB 8GB RAM, 256GB 8GB RAM, 256GB 16GB RAM128GB 8GB RAM, 256GB 8GB RAM, 512GB 8GB RAM
 UFS 3.1UFS 3.1 - 128GB only UFS 4.0
Main Camera
Dual50 MP, f/1.9, 24mm (wide), 1/1.56", 1.0µm, multi-directional PDAF, gimbal OIS 12 MP, f/2.2, 14mm, 113° (ultrawide), 1/2.55", 1.4µm, dual pixel PDAF-
FeaturesLED flash, HDR, panoramaLED flash, auto-HDR, panorama
Single-12 MP, f/2.2, 26mm (wide), Dual Pixel PDAF
Triple-50 MP, f/1.8, 24mm (wide), 1/1.56", 1.0µm, dual pixel PDAF, OIS 10 MP, f/2.4, 70mm (telephoto), 1/3.94", 1.0µm, PDAF, OIS, 3x optical zoom 12 MP, f/2.2, 13mm, 120˚ (ultrawide), 1/2.55" 1.4µm, Super Steady video
Video8K@24fps, 4K@30/60/120fps, 1080p@30/60/240fps; gyro-EIS, HDR8K@24/30fps, 4K@30/60fps, 1080p@30/60/120/240fps, HDR10+, stereo sound rec., gyro-EIS
Selfie camera
Features-HDR, HDR10+
Single12 MP, f/2.5, 28mm (standard), 1/2.93", 1.22µm, dual pixel PDAF12 MP, f/2.2, 26mm (wide), 1/3.2", 1.12µm, dual pixel PDAF
Video4K@30fps, 1080p@30/60fps4K@30/60fps, 1080p@30fps
Sound
3.5mm jack YesNo
35mm jackYesNo
Loudspeaker Yes, with stereo speakersYes, with stereo speakers
 24-bit/192kHz audio32-bit/384kHz audio Tuned by AKG
Comms
Bluetooth5.2, A2DP, LE, aptX HD, aptX Adaptive, aptX Lossless5.3, A2DP, LE
NFCYesYes
PositioningGPS (L1+L5), GLONASS (L1), BDS (B1I+B1c+B2a), GALILEO (E1+E5a), QZSS (L1+L5), NavIC (L5)GPS, GLONASS, BDS, GALILEO
RadioNoNo
USBUSB Type-C, OTGUSB Type-C 3.2, OTG
WLANWi-Fi 802.11 a/b/g/n/ac/6e, dual-band, Wi-Fi DirectWi-Fi 802.11 a/b/g/n/ac/6e, tri-band, Wi-Fi Direct
Features
SensorsFingerprint (side-mounted), accelerometer, gyro, proximity, compassFingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometer
 -Samsung DeX, Samsung Wireless DeX (desktop experience support) Bixby natural language commands and dictation Samsung Pay (Visa, MasterCard certified)
Battery
Charging30W wired, PD3.0, PPS, QC4 5W reverse wired25W wired, PD3.0, 50% in 30 min 15W wireless (Qi) 4.5W reverse wireless
TypeLi-Po 4300 mAhLi-Ion 3900 mAh
Misc
ColorsStarry Blue, Moonlight White, Sunset Red, Midnight BlackPhantom Black, Cream, Green, Lavender, Graphite, Lime
ModelsAI2202-1A006EU, AI2202, AI2202_BSM-S911B, SM-S911B/DS, SM-S911U, SM-S911U1, SM-S911W, SM-S911N, SM-S9110, SM-S911E, SM-S911E/DS
Price£ 619.99$ 237.95 / C$ 336.75 / £ 255.00 / € 322.41 / ₹ 49,990
SAR-0.95 W/kg (head)     0.88 W/kg (body)
SAR EU-0.96 W/kg (head)     1.30 W/kg (body)
Tests
Battery life Endurance rating 108h Endurance rating 101h
Camera Photo / Video Photo / Video
Display Contrast ratio: Infinite (nominal) Contrast ratio: Infinite (nominal)
Loudspeaker -26.7 LUFS (Good) -27.0 LUFS (Good)
Performance AnTuTu: 1083092 (v9) GeekBench: 4338 (v5.1) GFXBench: 89fps (ES 3.1 onscreen) AnTuTu: 1231075 (v9) GeekBench: 4950 (v5.1) GFXBench: 110fps (ES 3.1 onscreen)

Asus Zenfone 9

  • Compact and pocketable
  • Excellent performance
  • Clean Android experience
  • Competitive price
  • Good battery life

  • Camera not as versatile as S23
  • Display not as bright as S23
  • No official IP rating

Samsung Galaxy S23

  • Bright and vibrant display
  • Top-tier camera system
  • Refined software experience
  • Fast charging (wired & wireless)
  • Premium build quality

  • Higher price
  • Larger size
  • Samsung's One UI can be polarizing

Display Comparison

The Galaxy S23 boasts a significantly brighter display (1198 nits vs 831 nits), making it easier to see outdoors. Both have excellent contrast ratios (infinite nominal), and vibrant colors. The S23's slightly larger size also allows for a more immersive viewing experience. While the Zenfone 9's display is good, the S23's is noticeably superior.

Camera Comparison

The Galaxy S23's camera system is more versatile, offering improved low-light performance and better video stabilization. While the Zenfone 9 takes good photos, the S23's image processing and overall quality are a step above. The S23 also benefits from Samsung's extensive camera software features.

Performance

Both phones are incredibly fast thanks to their Snapdragon processors. The Galaxy S23's Snapdragon 8 Gen 2 offers a slight edge in raw performance and efficiency over the Zenfone 9's Snapdragon 8+ Gen 1. However, in everyday use, both phones will feel incredibly responsive. Gaming performance is excellent on both devices.

Battery Life

The Zenfone 9's endurance rating (108h) is impressive, suggesting excellent battery life. The Galaxy S23's active use score (11:27h) is also very good. While the numbers differ slightly, both phones should easily last a full day of moderate use. The S23's faster charging (25W wired, 15W wireless) is a bonus.

Buying Guide

The Asus Zenfone 9 is ideal for users who value a compact, powerful phone with a clean Android experience and don't want to spend a fortune. The Samsung Galaxy S23 is best suited for those seeking a flagship experience with a top-tier camera, vibrant display, and the latest Samsung software features, even at a premium price.

Frequently Asked Questions

❓ Which phone has better software support?
Samsung generally offers longer software update support than Asus, making the Galaxy S23 a better choice for those prioritizing longevity.
❓ Is the Zenfone 9 worth it if I want a small phone?
Absolutely! The Zenfone 9 is one of the few genuinely compact flagship phones available, making it ideal for those who prefer a pocketable device.