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Smartphone comparison

Samsung Galaxy S23 Ultra Refurbished vs Oppo Reno15 5G

Compare cameras, battery, screen and everyday features.

Compared products
01Selected
Samsung Galaxy S23 Ultra Refurbished

Samsung Galaxy S23 Ultra Refurbished

  • 234 g.
  • About 6.8 inch screen.
  • Qualcomm SM8550-AC Snapdragon 8 Gen 2 (4 nm) processor.
  • Storage: UFS 4.0.
  • 5,000 mAh battery capacity.
KSh 70,000In Stock
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02
Oppo Reno15 5G

Oppo Reno15 5G

  • 197 g.
  • Screen: 1256 x 2760 pixels (~460 ppi density).
  • Qualcomm SM7750-AB Snapdragon 7 Gen 4 (4 nm) processor.
  • Storage: UFS 3.1.
  • 6,500 mAh battery capacity.
KSh 67,700In Stock
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Samsung Galaxy S25 FEKSh 71,000
Samsung Galaxy S24 5GKSh 65,000
Vivo V70 5GKSh 72,700
Xiaomi 15TKSh 71,500
Google Pixel 10aKSh 71,000
Xiaomi 17T 5GKSh 74,000
OnePlus 13s 5GKSh 74,000
2 of 4 products

Our quick verdict

The Oppo Reno15 5G has a bigger battery (6,500 mAh), charges faster (80 W) and runs newer Android 16, while the Samsung Galaxy S23 Ultra Refurbished has a larger 6.8-inch, brighter screen, a higher-resolution main camera (200 MP) and 8K video recording and offers newer Wi-Fi 6E.

Weight

Samsung Galaxy S23 Ultra Refurbished
234 g
Oppo Reno15 5G
197 g

Display

Samsung Galaxy S23 Ultra Refurbished
1440 x 3088 pixels, 19.3:9 ratio (~500 ppi density)
Oppo Reno15 5G
1256 x 2760 pixels (~460 ppi density)

Performance

Samsung Galaxy S23 Ultra Refurbished
Qualcomm SM8550-AC Snapdragon 8 Gen 2 (4 nm) processor
Oppo Reno15 5G
Qualcomm SM7750-AB Snapdragon 7 Gen 4 (4 nm) processor

Storage

Samsung Galaxy S23 Ultra Refurbished
UFS 4.0
Oppo Reno15 5G
UFS 3.1

Battery capacity

Samsung Galaxy S23 Ultra Refurbished
5,000 mAh battery capacity
Oppo Reno15 5G
6,500 mAh battery capacity

Key differences

The main differences to help you choose.

Samsung Galaxy S23 Ultra Refurbished

  • Higher-resolution main camera: 200 MP (vs 50 MP).
  • Larger 6.8-inch screen (vs 6.59-inch).
  • Brighter display: up to 1,750 nits (vs 1,200).
  • Newer Wi-Fi 6E (vs Wi-Fi 5).
  • 8K video recording (vs 4K).
  • 15 W wireless charging.

Oppo Reno15 5G

  • Bigger battery: 6,500 mAh (vs 5,000 mAh).
  • Faster rated wired charging: 80 W (vs 45 W).
  • Newer Android 16 (vs Android 13).
  • Newer Bluetooth 5.4 (vs 5.3).
  • Higher-resolution selfie camera: 50 MP (vs 12 MP).
  • Lighter: 197 g (vs 234 g).

What matters most to you?

Choose any priorities

How each product answers the questions buyers ask most. Tick a topic to add it, untick one to hide it.

More topicsFewer topics
6 priorities selected.
How each product answers the selected priorities
PrioritySamsung Galaxy S23 Ultra RefurbishedOppo Reno15 5G
Display6.8-inch OLED display, 120 Hz, 500 ppi6.59-inch OLED display, 120 Hz, 460 ppi
Camera200 MP main camera with OIS, plus a 3x telephoto camera50 MP main camera with OIS, plus a 3.5x telephoto camera
PerformanceQualcomm Snapdragon 8 Gen 2 processorQualcomm Snapdragon 7 Gen 4 processor
Battery capacity5,000 mAh battery6,500 mAh battery
Charging45 W wired, 15 W wireless charging80 W wired charging
Water resistanceCorning Gorilla Glass Victus 2IP68 water and dust resistance

Detailed comparison

Explore the full specifications, section by section.

General

General specifications comparison
SpecificationSamsung Galaxy S23 Ultra RefurbishedOppo Reno15 5G
BrandSamsungOPPO
ModelGalaxy S23 UltraReno15
Announced2023, February 012026, January 02
Device type / form familySmartphone—
Release statusAvailable. Released 2023, February 17Available. Released 2026, January 02
Model numbersSM-S918B, SM-S918B/DS, SM-S918U, SM-S918U1, SM-S918W, SM-S918N, SM-S9180, SM-S918E, SM-S918E/DSCPH2825

Design

Design specifications comparison
SpecificationSamsung Galaxy S23 Ultra RefurbishedOppo Reno15 5G
Dimensions163.4 x 78.1 x 8.9 mm (6.43 x 3.07 x 0.35 in)158 x 74.8 x 7.8 mm (6.22 x 2.94 x 0.31 in)
Weight234 g (8.25 oz)197 g (6.95 oz)
Build materialsGlass front (Gorilla Glass Victus 2), glass back (Gorilla Glass Victus 2), aluminum frameGlass front (Gorilla Glass 7i), aluminum frame, glass back
Form factorTouchscreen smartphone—

Display

Display specifications comparison
SpecificationSamsung Galaxy S23 Ultra RefurbishedOppo Reno15 5G
DisplayDynamic AMOLED 2X, 120Hz, HDR10+, 1200 nits (HBM), 1750 nits (peak); 6.8 inches, 114.7 cm2 (~89.9% screen-to-body ratio)6.59 inches, 105.6 cm2 (~89.4% screen-to-body ratio); AMOLED, 1B colors, 120Hz, HDR10+, 600 nits (typ), 1200 nits (HBM)
Screen resolution1440 x 3088 pixels, 19.3:9 ratio (~500 ppi density)1256 x 2760 pixels (~460 ppi density)
Display protectionCorning Gorilla Glass Victus 2Corning Gorilla Glass 7i
Display featuresDynamic AMOLED 2X, 120Hz, HDR10+, 1200 nits (HBM), 1750 nits (peak)1B colors, 120Hz, HDR10+, 600 nits (typ), 1200 nits (HBM)
Display technologyDynamic AMOLED 2X, 120Hz, HDR10+, 1200 nits (HBM), 1750 nits (peak)AMOLED
Display size6.8 inches, 114.7 cm2 (~89.9% screen-to-body ratio)6.59 inches
Refresh rate120Hz120Hz
Brightness—600 nits (typ); 1200 nits (HBM)
HDR formats—HDR10+
Pixel density—460 ppi
Screen-to-body ratio—89.4% screen-to-body ratio

Performance

Performance specifications comparison
SpecificationSamsung Galaxy S23 Ultra RefurbishedOppo Reno15 5G
ProcessorQualcomm SM8550-AC Snapdragon 8 Gen 2 (4 nm)Qualcomm SM7750-AB Snapdragon 7 Gen 4 (4 nm)
CPUOcta-core (1x3.36 GHz Cortex-X3 & 2x2.8 GHz Cortex-A715 & 2x2.8 GHz Cortex-A710 & 3x2.0 GHz Cortex-A510)Octa-core (1x2.8 GHz Cortex-720 & 4x2.4 GHz Cortex-720 & 3x1.8 GHz Cortex-520)
GPUAdreno 740Adreno 722
User interface—ColorOS 16
Process node—4 nm

Memory & Storage

Memory & Storage specifications comparison
SpecificationSamsung Galaxy S23 Ultra RefurbishedOppo Reno15 5G
RAM12GB / 8GB (256GB); 12GB (512GB)8GB, 12GB
Storage256GB / 512GB256GB, 512GB
Storage technologyUFS 4.0UFS 3.1
Expandable storageNoNo
Memory configurations—256GB 8GB RAM, 256GB 12GB RAM, 512GB 8GB RAM, 512GB 12GB RAM

Cameras

Cameras specifications comparison
SpecificationSamsung Galaxy S23 Ultra RefurbishedOppo Reno15 5G
Rear camera200 MP, f/1.7, 24mm (wide), 1/1.3", 0.6µm, multi-directional PDAF, OIS 10 MP, f/2.4, 70mm (telephoto), 1/3.52", 1.12µm, PDAF, OIS, 3x optical zoom 10 MP, f/4.9, 230mm (periscope telephoto), 1/3.52", 1.12µm, PDAF, OIS, 10x optical zoom 12 MP, f/2.2, 13mm, 120˚ (ultrawide), 1/2.55", 1.4µm, dual pixel PDAF, Super Steady video50 MP, f/1.8, 26mm (wide), PDAF, OIS 50 MP, f/2.8, 80mm (telephoto), PDAF, OIS, 3.5x optical zoom 8 MP, f/2.2, 15mm, 116˚ (ultrawide), 1/4.0", 1.12µm, AF
Front camera12 MP, f/2.2, 26mm (wide), 1/3.2", 1.12µm, dual pixel PDAF50 MP, f/2.0, 18mm (ultrawide), AF
Rear camera featuresLaser AF, LED flash, auto-HDR, panoramaColor spectrum sensor, LED flash, HDR, panorama
Rear camera video8K@24/30fps, 4K@30/60fps, 1080p@30/60/120/240fps, HDR10+, stereo sound rec., gyro-EIS4K@30/60fps, 1080p@30/60/120fps, gyro-EIS, HDR
Front camera featuresHDR, HDR10+Panorama, HDR
Front camera video4K@30/60fps, 1080p@30fps4K@30/60fps, 1080p@30/60fps, gyro-EIS, HDR
Wide camera—50 MP, f/1.8, 26mm (wide), PDAF, OIS
Telephoto camera—50 MP, f/2.8, 80mm (telephoto), PDAF, OIS, 3.5x optical zoom
Ultra-wide camera—8 MP, f/2.2, 15mm, 116˚ (ultrawide), 1/4.0", 1.12µm, AF

Battery & Charging

Battery & Charging specifications comparison
SpecificationSamsung Galaxy S23 Ultra RefurbishedOppo Reno15 5G
BatteryLi-Ion 5000 mAh6500 mAh
Charging45W wired, PD3.0, 65% in 30 min 15W wireless (Qi) 4.5W reverse wireless80W wired, 80W UFCS, 55W PPS, 13.5W PD, 13.5W QC, 100% in 50 min Reverse wired

Software

Software specifications comparison
SpecificationSamsung Galaxy S23 Ultra RefurbishedOppo Reno15 5G
Operating systemAndroid 13, upgradable to Android 17, up to 4 major OS updates, One UI 9.0Android 16, ColorOS 16

Network

Network specifications comparison
SpecificationSamsung Galaxy S23 Ultra RefurbishedOppo Reno15 5G
NetworkGSM / CDMA / HSPA / EVDO / LTE / 5GGSM / HSPA / LTE / 5G
SIM· Nano-SIM + eSIM · Nano-SIM + Nano-SIM + eSIM (max 2 at a time)Nano-SIM + Nano-SIM + eSIM (max 2 at a time)
2G bandsGSM 850 / 900 / 1800 / 1900 CDMA 800 / 1900 & TD-SCDMAGSM 850 / 900 / 1800 / 1900
3G bandsHSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 CDMA2000 1xEV-DOHSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 - International; HSDPA 900 / 2100 - Asia
4G bands1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 38, 39, 40, 41, 66 - International 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 29, 30, 38, 39, 40, 41, 46, 48, 66, 71 - USA1, 2, 3, 4, 5, 7, 8, 18, 19, 20, 26, 28, 38, 40, 41, 42, 43, 48, 66, 71 - International; 1, 3, 5, 8, 40 - Asia
5G bands1, 2, 3, 5, 7, 8, 12, 20, 25, 28, 38, 40, 41, 66, 75, 77, 78 SA/NSA/Sub6 - International 1, 7, 28, 41, 66, 71, 78, 258, 260, 261 SA/NSA/Sub6/mmWave - USA1, 2, 3, 5, 7, 8, 20, 26, 28, 38, 40, 41, 48, 66, 71, 77, 78, 80, 83 SA/NSA - International; 1, 3, 5, 8, 40 SA/NSA - Asia
Network speedHSPA, LTE (CA), 5GHSPA, LTE, 5G

Connectivity

Connectivity specifications comparison
SpecificationSamsung Galaxy S23 Ultra RefurbishedOppo Reno15 5G
NFCYesYes (market/region dependent)
Bluetooth5.3, A2DP, LE5.4, A2DP, LE, aptX HD, aptX Adaptive, LHDC 5
Wi-FiWi-Fi 802.11 a/b/g/n/ac/6e, tri-band, Wi-Fi DirectWi-Fi 802.11 a/b/g/n/ac, dual-band
PositioningGPS, GALILEO, GLONASS, BDS, QZSSGPS, GLONASS, GALILEO, BDS, QZSS
RadioNoNo
USBUSB Type-C 3.2, OTGUSB Type-C 2.0, OTG
Ultra Wideband (UWB)Supported—
Infrared—Yes

Durability

Durability specifications comparison
SpecificationSamsung Galaxy S23 Ultra RefurbishedOppo Reno15 5G
Water resistance—IP68/IP69 dust tight and water resistant (high pressure water jets; immersible up to 1.5m for 30 min)

Features

Features specifications comparison
SpecificationSamsung Galaxy S23 Ultra RefurbishedOppo Reno15 5G
SensorsFingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometerFingerprint (under display, optical), accelerometer, gyro, proximity, compass
Desktop modeSamsung DeX, Samsung Wireless DeX (desktop experience support)—
Colors—Aurora Blue, Twilight Blue, Aurora White

Audio

Audio specifications comparison
SpecificationSamsung Galaxy S23 Ultra RefurbishedOppo Reno15 5G
LoudspeakersYes, with stereo speakersYes, with stereo speakers
3.5 mm headphone jackNoNo
Audio featuresHigh-bitrate audio support—

Refurbished unit information

Refurbished unit information specifications comparison
SpecificationSamsung Galaxy S23 Ultra RefurbishedOppo Reno15 5G
ConditionRefurbished / EX-UK—

Tests

Tests specifications comparison
SpecificationSamsung Galaxy S23 Ultra RefurbishedOppo Reno15 5G
Performance benchmarks—AnTuTu: 1086657 (v10), 1429374 (v11) GeekBench: 1188 (v6) 3DMark: 2049 (Wild Life Extreme)
Measured display brightness—1188 nits max brightness (measured)
Measured loudspeaker loudness—-25.3 LUFS (Very good)
Active use battery score—Active use score 16:23h

EU label

EU label specifications comparison
SpecificationSamsung Galaxy S23 Ultra RefurbishedOppo Reno15 5G
Energy—Class A
Battery—71:17h endurance, 1600 cycles
Free fall—Class C (90 falls)
Repairability—Class B

Similarities

  • Both have 120 Hz displays.
  • Both have optical image stabilisation.
  • Both have NFC.
  • Both have an aluminium frame.
  • Both have stereo speakers.
  • Both support 5G networks.

In summary

For most buyers the Oppo Reno15 5G is the better buy; the Samsung Galaxy S23 Ultra Refurbished makes sense if you want a larger 6.8-inch, brighter screen.

Back to compared products ↑

In-stock alternatives

Samsung Galaxy S25 FEFor Samsung Galaxy S23 Ultra RefurbishedSamsung Galaxy S25 FEView product ↗iPhone 14 ProFor Samsung Galaxy S23 Ultra RefurbishediPhone 14 ProView product ↗Samsung Galaxy S24 5GFor Oppo Reno15 5GSamsung Galaxy S24 5GView product ↗Vivo V70 5GFor Oppo Reno15 5GVivo V70 5GView product ↗

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