The sub-$150 smartphone market is fiercely competitive. Both the Infinix Smart 10 HD and the Realme C51s aim to deliver essential smartphone functionality at an accessible price. However, they take different approaches, particularly in chipset choice and charging technology, making a direct comparison crucial for budget-conscious buyers.
🏆 Quick Verdict
For most users, the Realme C51s is the better choice. Its Unisoc Tiger T612 chipset offers a noticeable performance edge over the Infinix Smart 10 HD’s processor, and the significantly faster 33W charging dramatically improves usability. While the Infinix offers reverse wired charging, the Realme’s overall speed and convenience outweigh this feature.
| Network |
|---|
| 2G bands | GSM 850 / 900 / 1800 / 1900 | GSM 850 / 900 / 1800 / 1900 |
| 3G bands | HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 | HSDPA 900 / 2100 |
| 4G bands | 1, 2, 3, 4, 5, 7, 8, 20, 28, 38, 40, 41 | 1, 3, 5, 8, 38, 40 |
| Speed | HSPA, LTE | HSPA, LTE |
| Technology | GSM / HSPA / LTE | GSM / HSPA / LTE |
| Launch |
|---|
| Announced | 2025, June 16 | 2024, March 15 |
| Status | Available. Released 2025, June 16 | Available. Released 2024, March 15 |
| Body |
|---|
| Build | Glass front, plastic back, plastic frame | Glass front, plastic frame, plastic back |
| Dimensions | 163.6 x 75.6 x 8.5 mm (6.44 x 2.98 x 0.33 in) | 167.2 x 76.7 x 7.5 mm (6.58 x 3.02 x 0.30 in) |
| SIM | Nano-SIM + Nano-SIM | Nano-SIM + Nano-SIM |
| Weight | 184 g (6.49 oz) | 182 g (6.42 oz) |
| Display |
|---|
| Resolution | 720 x 1612 pixels, 20:9 ratio (~267 ppi density) | 720 x 1600 pixels, 20:9 ratio (~260 ppi density) |
| Size | 6.6 inches, 104.6 cm2 (~84.6% screen-to-body ratio) | 6.74 inches, 109.7 cm2 (~85.5% screen-to-body ratio) |
| Type | IPS LCD, 90Hz, 500 nits (peak) | IPS LCD, 90Hz, 560 nits (peak) |
| Platform |
|---|
| CPU | Octa-core (2x1.6 GHz Cortex-A75 & 6x1.6 GHz Cortex-A55) | Octa-core (2x1.8 GHz Cortex-A75 & 6x1.8 GHz Cortex-A55) |
| Chipset | (12 nm) | Unisoc Tiger T612 (12 nm) |
| GPU | Mali-G57 MC1 | Mali-G57 |
| OS | Android 14 (Go edition) | Android 13, Realme UI |
| Memory |
|---|
| Card slot | microSDXC (dedicated slot) | microSDXC (dedicated slot) |
| Internal | 64GB 2GB RAM | 128GB 6GB RAM |
| Main Camera |
|---|
| Features | Quad-LED flash | LED flash, HDR, panorama |
| Single | 13 MP, f/1.9, 27mm (wide), AF | 50 MP, f/1.8, 27mm (wide), 1/2.76", 0.64µm, PDAF
Auxiliary lens |
| Video | 1080p@30fps | 1080p@30fps |
| Selfie camera |
|---|
| Features | - | HDR |
| Single | 8 MP, f/2.0, (wide), 1/4.0", 1.12µm | 5 MP, f/2.2, 28mm (wide), 1/5.0", 1.12µm |
| Video | 1080p@30fps | 720p@30fps |
| Sound |
|---|
| 35mm jack | Yes | Yes |
| Loudspeaker | Yes | Yes |
| Comms |
|---|
| Bluetooth | Yes | 5.0, A2DP, LE |
| Infrared port | Yes | - |
| NFC | No | Yes, 360˚ (market/region dependent) |
| Positioning | GPS | GPS, GLONASS, GALILEO |
| Radio | FM radio | Unspecified |
| USB | USB Type-C 2.0, OTG | USB Type-C |
| WLAN | Wi-Fi 802.11 a/b/g/n/ac | Wi-Fi 802.11 a/b/g/n/ac, dual-band |
| Features |
|---|
| Sensors | Fingerprint (side-mounted), accelerometer, proximity, compass | Fingerprint (side-mounted), accelerometer, gyro, proximity, compass |
| Battery |
|---|
| Charging | 10W wired
Reverse wired | 33W wired, 0-50% in 28 min |
| Type | 5000 mAh | 5000 mAh |
| Misc |
|---|
| Colors | Timber Black, Shiny Gold, Crystal Green, Galaxy White | Shiny Green, Mighty Black |
| Models | X6525D | RMX3765 |
| Price | About 60 EUR | About 100 EUR |
Infinix Smart 10 HD
- Reverse wired charging for accessory top-ups
- Potentially lower price point
- Acceptable performance for basic tasks
- Slow 10W charging
- Less powerful processor than the Realme C51s
- Likely inferior image processing
Realme C51s
- Faster Unisoc Tiger T612 processor
- Significantly faster 33W charging
- Potentially better image processing
- No reverse wired charging
- Slightly higher price
- May not have a significantly better display
Display Comparison
Neither device boasts a standout display. Both are likely utilizing LCD panels, common in this price bracket. Without specific display specs, the comparison hinges on manufacturing quality. However, the Realme C51s’ slightly higher price point *suggests* a potentially better-tuned panel, though this remains speculative. Bezels are expected to be substantial on both, impacting screen-to-body ratio.
Camera Comparison
Without detailed camera specifications beyond the presence of sensors, a meaningful comparison is difficult. Both phones likely feature a primary camera paired with auxiliary lenses of limited utility. The focus should be on image processing capabilities, which are heavily reliant on the chipset. Given the Realme C51s’ more powerful processor, it’s reasonable to expect slightly better image quality, particularly in challenging lighting conditions. The absence of OIS on either device means image stabilization will be primarily software-based.
Performance
The Realme C51s holds a clear advantage in processing power. Its Unisoc Tiger T612, built on a 12nm process, features a CPU clocked at 1.8 GHz, compared to the Infinix Smart 10 HD’s 1.6 GHz clock speed on its Cortex-A75 cores. While both utilize the same Cortex-A75/A55 architecture, the higher clock speed translates to snappier app launches and smoother multitasking. The 12nm fabrication process is identical, so thermal differences will be minimal, but the Realme will complete tasks faster. This benefits users who frequently switch between apps or engage in light gaming.
Battery Life
The Realme C51s’ 33W charging is a game-changer in this segment. The advertised 0-50% charge in 28 minutes significantly reduces downtime compared to the Infinix Smart 10 HD’s slow 10W charging. While battery capacity isn’t specified, the faster charging speed effectively mitigates any potential capacity disadvantage. The Infinix’s inclusion of reverse wired charging is a niche feature, useful for charging accessories but unlikely to be a primary purchase driver for most users.
Buying Guide
Buy the Infinix Smart 10 HD if you prioritize reverse wired charging for topping up accessories and are comfortable with a slightly slower overall experience. Buy the Realme C51s if you value faster performance for everyday tasks and social media, and especially if quick charging is a must-have feature for your mobile lifestyle.
Frequently Asked Questions
❓ Is the Unisoc Tiger T612 in the Realme C51s powerful enough for playing games like PUBG Mobile?
The Unisoc Tiger T612 can handle PUBG Mobile, but you’ll likely need to lower the graphics settings to medium or low to maintain a stable frame rate. It’s not a gaming powerhouse, but it’s capable of providing a playable experience for casual gamers.
❓ How much faster is the 33W charging on the Realme C51s compared to the 10W charging on the Infinix Smart 10 HD in real-world use?
The difference is substantial. The Realme C51s can reach 50% charge in approximately 28 minutes, while the Infinix Smart 10 HD will take well over two hours to achieve the same level. This means significantly less time tethered to a charger with the Realme.
❓ Does the Infinix Smart 10 HD's reverse wired charging work with all devices?
The reverse wired charging on the Infinix Smart 10 HD is compatible with most devices that charge via USB-A, including smartphones, Bluetooth headphones, and smartwatches. However, charging speeds will be limited by the Infinix's output and the receiving device's charging capabilities.
