Realme C51 vs Oppo A58 4G: A Deep Dive into Budget Smartphone Performance

The Realme C51 and Oppo A58 4G represent compelling options in the crowded sub-$200 smartphone market. Both aim to deliver essential features and reliable performance without breaking the bank. However, they diverge in their core processing power, with the Realme C51 utilizing a Unisoc Tiger T612 while the Oppo A58 4G opts for the MediaTek Helio G85. This comparison will dissect these differences and determine which device offers the best overall experience.
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🏆 Quick Verdict

For the average user prioritizing consistent performance and slightly faster charging, the Oppo A58 4G emerges as the better choice. Its Helio G85 chipset, with a marginally higher CPU clock speed, provides a smoother experience in demanding tasks, despite the Realme C51's competitive 33W charging.

PHONES
Phone Names Realme C51 Oppo A58 4G
Network
2G bandsGSM 850 / 900 / 1800 / 1900GSM 900 / 1800
3G bandsHSDPA 850 / 900 / 2100HSDPA 900 / 2100
4G bands1, 3, 5, 8, 38, 40, 41 - Africa, India1, 3, 5, 8, 40
SpeedHSPA, LTEHSPA, LTE
TechnologyGSM / HSPA / LTEGSM / HSPA / LTE
Launch
Announced2023, July 242023, July 26
StatusAvailable. Released 2023, AugustAvailable. Released 2023, July 28
Body
BuildGlass front, plastic frame, plastic backGlass front, plastic frame, plastic back
Dimensions167.2 x 76.7 x 8 mm (6.58 x 3.02 x 0.31 in)165.7 x 76 x 8 mm (6.52 x 2.99 x 0.31 in)
SIMNano-SIM + Nano-SIMNano-SIM + Nano-SIM
Weight186 g (6.56 oz)192 g (6.77 oz)
Display
Resolution720 x 1600 pixels, 20:9 ratio (~260 ppi density)1080 x 2400 pixels, 20:9 ratio (~392 ppi density)
Size6.74 inches, 109.7 cm2 (~85.5% screen-to-body ratio)6.72 inches, 109.0 cm2 (~86.6% screen-to-body ratio)
TypeIPS LCD, 90Hz, 560 nits (peak)IPS LCD, 550 nits (typ), 680 nits (HBM)
Platform
CPUOcta-core (2x1.8 GHz Cortex-A75 & 6x1.8 GHz Cortex-A55)Octa-core (2x2.0 GHz Cortex-A75 & 6x1.8 GHz Cortex-A55)
ChipsetUnisoc Tiger T612 (12 nm)Mediatek MT6769 Helio G85 (12 nm)
GPUMali-G57Mali-G52 MC2
OSAndroid 13, Realme UI TAndroid 13, upgradable to Android 15, ColorOS 15
Memory
Card slotmicroSDXC (dedicated slot)microSDXC
Internal64GB 3GB RAM, 64GB 4GB RAM, 128GB 4GB RAM, 256GB 6GB RAM128GB 6GB RAM, 128GB 8GB RAM, 256GB 8GB RAM
Main Camera
Dual-50 MP, f/1.8, (wide), AF Auxiliary lens
FeaturesLED flash, HDR, panoramaLED flash, HDR, panorama
Single50 MP, f/1.8, 27mm (wide), 1/2.76", 0.64µm, PDAF Auxiliary lens-
Video1080p@30fps1080p@30fps
Selfie camera
FeaturesHDRPanorama
Single5 MP, f/2.2, 28mm (wide), 1/5.0", 1.12µm8 MP, f/2.0, (wide)
Video720p@30fps1080p@30fps
Sound
35mm jackYesYes
Loudspeaker YesYes, with stereo speakers
Comms
Bluetooth5.0, A2DP, LE5.3, A2DP, LE, aptX HD
Infrared port-Yes
NFCYes, 360˚ (market/region dependent)Yes
PositioningGPS, GLONASS, GALILEOGPS, GALILEO, GLONASS, BDS, QZSS
RadioUnspecifiedNo
USBUSB Type-C 2.0, OTGUSB Type-C 2.0, OTG
WLANWi-Fi 802.11 a/b/g/n/ac, dual-bandWi-Fi 802.11 a/b/g/n/ac, dual-band
Features
SensorsFingerprint (side-mounted), accelerometer, proximity, compassFingerprint (side-mounted), accelerometer, proximity, compass
Battery
Charging33W wired, 0-50% in 28 min33W wired, 56% in 30 min
Type5000 mAhLi-Po 5000 mAh
Misc
ColorsMint Green, Carbon BlackGlowing Black, Dazzling Green
ModelsRMX3830CPH2577
PriceAbout 410 EURAbout 150 EUR
SAR1.18 W/kg (head)     0.78 W/kg (body)-

Realme C51

  • Potentially lower price point
  • Slightly faster initial charging speed (0-50%)
  • Unisoc Tiger T612 is power efficient for basic tasks

  • Less powerful chipset compared to Helio G85
  • May struggle with demanding games and multitasking

Oppo A58 4G

  • More powerful MediaTek Helio G85 chipset
  • Better performance for gaming and multitasking
  • MediaTek HyperEngine for game optimization

  • May be slightly more expensive
  • Charging speed is marginally slower than Realme C51 (initial phase)

Display Comparison

Neither device boasts a standout display. Both likely feature standard LCD panels, typical for this price bracket. Without specific data on brightness or color accuracy, it's difficult to declare a clear winner. However, the display quality will likely be similar, focusing on functionality over premium visual experience. Bezels are expected to be moderate on both devices, prioritizing affordability over an immersive edge-to-edge design.

Camera Comparison

Without detailed camera specifications beyond the presence of a main sensor, a direct comparison is challenging. Both devices likely feature a multi-camera setup with a primary sensor and supporting lenses (potentially including a 2MP macro). Image quality will heavily rely on software processing and sensor size, which are currently unknown. The Oppo A58 4G, benefiting from MediaTek’s ISP, might offer slightly better image processing capabilities, but this is speculative without further data. The inclusion of a 2MP macro lens on either device is unlikely to provide significant photographic value.

Performance

The core difference lies in the chipsets. The Oppo A58 4G’s MediaTek Helio G85 (2x2.0 GHz Cortex-A75 & 6x1.8 GHz Cortex-A55) has a slight edge over the Realme C51’s Unisoc Tiger T612 (2x1.8 GHz Cortex-A75 & 6x1.8 GHz Cortex-A55) due to the higher clock speed of its prime cores. While both utilize the same Cortex-A75 and A55 architecture, the 2.0 GHz vs 1.8 GHz difference translates to quicker app launches and smoother multitasking. The Helio G85 also benefits from MediaTek’s HyperEngine software, potentially offering better game optimization. The Realme C51’s Unisoc chip is a capable performer for everyday tasks, but will likely show more strain under sustained load.

Battery Life

Both the Realme C51 and Oppo A58 4G support 33W wired charging, a significant advantage over slower charging solutions in this price range. However, the charging *speed* differs. The Realme C51 reaches 50% charge in 28 minutes, while the Oppo A58 4G achieves 56% in 30 minutes. This suggests the Realme C51 charges slightly faster initially, but the Oppo A58 4G maintains a more consistent charge rate. Battery capacity is not specified, but both likely feature around a 5000mAh battery, typical for this segment. The faster initial charge of the Realme C51 could be beneficial for quick top-ups.

Buying Guide

Buy the Realme C51 if you prioritize a potentially lower price point and are primarily focused on basic smartphone tasks like calling, texting, and light social media use. Buy the Oppo A58 4G if you prefer a more responsive experience for gaming, multitasking, and content creation, and are willing to spend a little extra for the improved chipset.

Frequently Asked Questions

❓ Will the Unisoc Tiger T612 in the Realme C51 struggle with popular games like PUBG Mobile?
The Unisoc Tiger T612 can run PUBG Mobile, but likely at lower graphics settings and frame rates to maintain a stable experience. The Helio G85 in the Oppo A58 4G is better suited for gaming, offering smoother performance at higher settings. Expect more noticeable frame drops and potential lag on the Realme C51 during intense gaming sessions.
❓ How significant is the difference in charging speed between the Realme C51 and Oppo A58 4G?
The difference is relatively minor. The Realme C51 charges slightly faster initially (reaching 50% in 28 minutes vs. 30 minutes for the Oppo A58 4G). However, the Oppo A58 4G maintains a more consistent charging rate, reaching 56% in the same 30-minute timeframe. For most users, this difference won't be noticeable in everyday use.
❓ Is the 2MP macro camera on either phone worth using?
Generally, 2MP macro cameras on budget phones offer limited utility. Image quality is often poor, lacking detail and sharpness. They are best used in ideal lighting conditions and don't provide a significant improvement over standard photos taken with the main sensor.