Oppo Ace2 vs Samsung Galaxy S20+ 5G: A Deep Dive into Performance and Charging

Launched in 2020, both the Oppo Ace2 and the Samsung Galaxy S20+ 5G represented top-tier Android experiences. However, they took different approaches. The Ace2 prioritized charging speed and, in some regions, offered a Snapdragon 865, while the S20+ aimed for a more polished software experience and broader brand appeal, often shipping with the Exynos 990. This comparison dissects the key differences to help you determine which phone holds up better today.
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🏆 Quick Verdict

For the average user prioritizing speed and battery convenience, the Oppo Ace2 emerges as the winner. Its 65W wired and 40W wireless charging significantly outperform the S20+'s 25W and 15W capabilities. While the S20+ offers Samsung's ecosystem and potentially a Snapdragon 865 in the US, the Ace2's charging advantage is a game-changer.

PHONES
Phone Names Oppo Ace2 Samsung Galaxy S20+ 5G
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, 20, 34, 38, 39, 40, 41 - China1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 32, 38, 39, 40, 41, 66 - SM-G986B
5G bands1, 3, 41, 78, 79 SA/NSA - China1, 3, 5, 7, 8, 28, 40, 77, 78 SA/NSA/Sub6 - SM-G986B
SpeedHSPA, LTE, 5GHSPA 42.2/5.76 Mbps, LTE (7CA) Cat20 2000/200 Mbps, 5G (5+ Gbps DL)
TechnologyGSM / CDMA / HSPA / EVDO / LTE / 5GGSM / CDMA / HSPA / EVDO / LTE / 5G
 CDMA2000 1xEV-DO -
Launch
Announced2020, April 13. Released 2020, April 202020, February 11
StatusDiscontinuedAvailable. Released 2020, March 06
Body
BuildGlass front (Gorilla Glass 5), glass back (Gorilla Glass 5), aluminum frameGlass front (Gorilla Glass 6), glass back (Gorilla Glass 6), aluminum frame
Dimensions160 x 75.4 x 8.6 mm (6.30 x 2.97 x 0.34 in)161.9 x 73.7 x 7.8 mm (6.37 x 2.90 x 0.31 in)
SIMNano-SIM + Nano-SIM· Nano-SIM + eSIM· Nano-SIM + Nano-SIM
Weight186 g (6.56 oz)188 g (6.63 oz)
Display
ProtectionCorning Gorilla Glass 5Corning Gorilla Glass 6
Resolution1080 x 2400 pixels, 20:9 ratio (~402 ppi density)1440 x 3200 pixels, 20:9 ratio (~525 ppi density)
Size6.55 inches, 103.6 cm2 (~85.9% screen-to-body ratio)6.7 inches, 108.0 cm2 (~90.5% screen-to-body ratio)
TypeAMOLED, 90Hz, HDR10+, 500 nits (typ)Dynamic AMOLED 2X, 120Hz, HDR10+, 1200 nits (peak)
Platform
CPUOcta-core (1x2.84 GHz Cortex-A77 & 3x2.42 GHz Cortex-A77 & 4x1.80 GHz Cortex-A55)Octa-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) - USA
ChipsetQualcomm SM8250 Snapdragon 865 5G (7 nm+)Exynos 990 (7 nm+) - GlobalQualcomm SM8250 Snapdragon 865 5G (7 nm+) - USA
GPUAdreno 650Mali-G77 MP11 - GlobalAdreno 650 - USA
OSAndroid 10, ColorOS 7.1Android 10, upgradable to Android 13, One UI 5.1
Memory
Card slotNomicroSDXC (uses shared SIM slot)
Internal128GB 8GB RAM, 256GB 8GB RAM, 256GB 12GB RAM128GB 8GB RAM, 128GB 12GB RAM, 256GB 12GB RAM, 512GB 12GB RAM
 UFS 3.0-
Main Camera
FeaturesLED flash, HDR, panoramaLED flash, auto-HDR, panorama
Quad48 MP, f/1.7, 26mm (wide), 1/2.0", 0.8µm, PDAF 8 MP, f/2.2, 13mm (ultrawide), 1/4.0", 1.12µm, AF Auxiliary lenses-
Triple-12 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 0.3 MP, TOF 3D, f/1.0, (depth)
Video4K@30/60fps, 1080p@30/60/240fps; gyro-EIS8K@24fps, 4K@30/60fps, 1080p@30/60/240fps, 720p@960fps, HDR10+, stereo sound rec., gyro-EIS & OIS
Selfie camera
FeaturesHDRHDR
Single16 MP, f/2.4, 29mm (wide), 1/3.06", 1.0µm10 MP, f/2.2, 26mm (wide), 1/3.24", 1.22µm, dual pixel PDAF
Video1080p@30fps4K@30/60fps, 1080p@30fps
Sound
3.5mm jack NoNo
35mm jackNoNo
Loudspeaker Yes, with stereo speakersYes, with stereo speakers
Comms
Bluetooth5.1, A2DP, LE, aptX HD5.0, A2DP, LE
NFCYesYes
PositioningGPS (L1+L5), GLONASS (G1), BDS (B1I+B2a), GALILEO (E1+E5a), QZSS (L1+L5)GPS, GLONASS, BDS, GALILEO
RadioNoFM radio (Snapdragon model only; market/operator dependent)
USBUSB Type-C 2.0, OTGUSB Type-C 3.2, OTG
WLANWi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi DirectWi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct
Features
SensorsFingerprint (under display, optical), accelerometer, gyro, proximity, compassFingerprint (under display, ultrasonic), accelerometer, gyro, proximity, compass, barometer
Battery
Charging65W wired, 100% in 30 min 40W wireless, 100% in 56 min 10W wireless reversed25W wired, PD3.0 15W wireless (Qi) 4.5W reverse wireless
TypeLi-Po 4000 mAhLi-Ion 4500 mAh
Misc
ColorsAurora Silver, Moon Rock Grey, Fantasy PurpleCosmic Black, Cosmic Grey, Cloud Blue, Cloud White, Aura Red, Aura Blue
ModelsPDHM00SM-G986, SM-G986F, SM-G986F/DS, SM-G986U, SM-G986U1, SM-G9860, SM-G986B/DS, SM-G986N, SM-G986B, SM-G986W, SCG02
PriceAbout 520 EUR$ 174.17 / C$ 684.99 / € 299.97
SAR-1.08 W/kg (head)     1.02 W/kg (body)
SAR EU-1.09 W/kg (head)     1.57 W/kg (body)

Oppo Ace2

  • Blazing-fast 65W wired charging
  • Impressive 40W wireless charging
  • Snapdragon 865 offers superior performance
  • 10W reverse wireless charging

  • Less established brand recognition
  • Software experience may not be as refined as Samsung's

Samsung Galaxy S20+ 5G

  • Samsung's refined software experience
  • Strong camera image processing (especially in US Snapdragon variant)
  • Integration with Samsung ecosystem
  • Potentially better display quality

  • Significantly slower charging speeds
  • Exynos 990 (global variant) suffers from throttling and lower performance
  • Lower reverse wireless charging speed

Display Comparison

Both devices utilize 7nm+ fabrication processes, suggesting similar efficiency in panel driving. While specific display specs (resolution, refresh rate) aren't provided, both would have been flagship-grade for 2020. The S20+ likely benefits from Samsung's display expertise, potentially offering slightly better color accuracy and outdoor visibility. However, the Ace2's display technology isn't specified, making a definitive comparison difficult. Bezels were likely comparable, reflecting the design trends of the time.

Camera Comparison

Without detailed sensor specifications, a precise camera comparison is challenging. However, the S20+ likely boasts a more sophisticated image processing pipeline, leveraging Samsung's years of camera expertise. The Ace2's camera system is less documented, suggesting a focus on hardware rather than computational photography. The S20+'s OIS (Optical Image Stabilization) is likely more advanced, resulting in sharper images and smoother video recording. The presence of a 2MP macro camera on either device is largely inconsequential; these sensors typically offer limited detail and are often better avoided.

Performance

The chipset is a critical differentiator. The Oppo Ace2 consistently features the Qualcomm Snapdragon 865 5G, built on a 7nm+ process. The Galaxy S20+ 5G, however, shipped with either the Exynos 990 (globally) or the Snapdragon 865 (USA). The Exynos 990, also 7nm+, generally lagged behind the Snapdragon 865 in sustained performance and thermal efficiency. The Snapdragon 865 in the Ace2, with its Cortex-A77 cores, offers a performance edge, particularly in demanding tasks like gaming. The CPU architecture difference – the S20+'s global Exynos using Mongoose M5 cores versus the Ace2's A77 cores – translates to real-world differences in multi-core performance and power consumption. The Ace2's Snapdragon 865 benefits from Qualcomm's optimized GPU, potentially delivering higher frame rates in graphically intensive games.

Battery Life

The battery capacity isn't specified for either device, but the charging speeds are a defining factor. The Oppo Ace2's 65W wired charging is revolutionary, achieving a 100% charge in just 30 minutes. Its 40W wireless charging (56 minutes to full) is equally impressive. The Galaxy S20+ 5G's 25W wired charging (PD3.0) and 15W wireless charging (Qi) are significantly slower. While a larger battery capacity on the S20+ might offer slightly longer runtime, the Ace2's rapid charging mitigates this advantage, allowing for quick top-ups throughout the day. The Ace2 also includes 10W reverse wireless charging, a feature the S20+ offers at a slower 4.5W.

Buying Guide

Buy the Oppo Ace2 if you need incredibly fast charging, both wired and wireless, and value raw performance from the Snapdragon 865. It's ideal for power users who frequently top up their phones throughout the day. Buy the Samsung Galaxy S20+ 5G if you prefer a more established brand with a refined software experience, a potentially better camera algorithm (depending on region), and integration with the Samsung ecosystem of devices. It's a better choice for those who prioritize a holistic user experience over sheer charging speed.

Frequently Asked Questions

❓ Does the Exynos 990 in the Galaxy S20+ overheat during prolonged gaming sessions?
Yes, the Exynos 990 is known to suffer from thermal throttling under sustained load, particularly during demanding games. This can lead to reduced performance and frame rate drops. The Snapdragon 865 in the Oppo Ace2, and the US variant of the S20+, handles heat more efficiently, providing a more consistent gaming experience.
❓ How much faster is the Oppo Ace2's 65W charging compared to the S20+'s 25W charging in real-world use?
The difference is substantial. The Ace2 can charge from 0% to 100% in approximately 30 minutes, while the S20+ takes around 1 hour and 15 minutes. This means you can add several hours of usage to the Ace2 with just a quick 15-20 minute charge, a significant convenience factor.
❓ Is the reverse wireless charging on either phone useful for anything beyond emergencies?
While convenient for topping up accessories like earbuds, the reverse wireless charging speeds (10W on the Ace2, 4.5W on the S20+) are relatively slow. It's best suited for emergency situations or slowly charging small devices rather than a primary charging method.