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- 503 vs Redmi A3x
TCL 503 vs Xiaomi Redmi A3x
What 503 does better (2) and where Redmi A3x wins (7) — every spec side by side.
Dimensions
Size comparison
503Redmi A3x
| 503 | Redmi A3x | Difference | |
|---|---|---|---|
| Height | 163.9 mm | 168.4 mm | −4.5 mm |
| Width | 75.5 mm | 76.3 mm | −0.8 mm |
| Thickness | 8.9 mm | 8.3 mm | +0.6 mm |
| Weight | 186 g | 193 g | −8 g |
Drawn to the same scale from the official dimensions (front and side).
Why is 503 better than Redmi A3x?
- Weight186 g vs 193 g+4%
- Screen-to-body ratio84.6% vs 82.9%+2%
Why is Redmi A3x better than 503?
- Refresh rate60 Hz vs 90 Hz+50%
- Storage (max)64 GB vs 128 GB2×
- RAM3 GB vs 4 GB+33%
- Peak brightness350 nits vs 500 nits+43%
- CPU frequency1.6 GHz vs 1.8 GHz+12%
- Process28 nm vs 22 nm+27%
- Thickness8.9 mm vs 8.3 mm+7%
Specifications
Side by side
| Design | ||
| Weight | 186 g | 193 g |
| Thickness | 8.9 mm | 8.3 mm |
| Height | 163.9 mm | 168.4 mm |
| Width | 75.5 mm | 76.3 mm |
| Frame | Plastic | Plastic |
| Back | Plastic | Glass |
| Glass protection | — | Corning Gorilla Glass 3 |
| Colours | Space Gray, Midnight Blue | Midnight Black, Moonlight White (Starry White), Aurora Green (Ocean Green), Olive Green |
| Display | ||
| Screen size | 6.6″ | 6.7″ |
| Panel | IPS LCD | IPS LCD |
| OLED panel | No | No |
| Resolution (width) | 720 px | 720 px |
| Resolution (height) | 1,612 px | 1,650 px |
| Pixel density | 267 ppi | 268 ppi |
| Refresh rate | 60 Hz | 90 Hz |
| Peak brightness | 350 nits | 500 nits |
| Screen-to-body ratio | 84.6% | 82.9% |
| Performance | ||
| Chipset | Unisoc SC9863A | Unisoc T603 |
| Chip maker | Unisoc | Unisoc |
| Process | 28 nm | 22 nm |
| CPU cores | 8 | 8 |
| CPU frequency | 1.6 GHz | 1.8 GHz |
| GPU | PowerVR GE8322 | PowerVR GE8322 |
| Memory | ||
| RAM | 3 GB | 4 GB |
| Storage (max) | 64 GB | 128 GB |
| Storage (base) | 64 GB | 64 GB |
| Storage type | eMMC 5.1 | eMMC 5.1 |
| Memory card slot | Yes | Yes |
| Camera | ||
| Main camera | 8 MP | 8 MP |
| Main camera aperture | f/2 | f/2 |
| Main sensor size | 1/4.0" | — |
| Rear cameras | 1 | 1 |
| Optical stabilisation | No | No |
| Ultra-wide camera | No | No |
| Telephoto camera | No | No |
| Max video | 1080p | 1080p |
| Selfie camera | 5 MP | 5 MP |
| 4K selfie video | No | No |
| Battery | ||
| Battery capacity | 5,000 mAh | 5,000 mAh |
| Wired charging | 10 W | 10 W |
| Wireless charging | No | No |
| Connectivity | ||
| 5G | — | No |
| eSIM | No | No |
| Dual SIM | Yes | Yes |
| Wi-Fi standard | Wi-Fi 4 | Wi-Fi 4 |
| Bluetooth | 4.2 | 4.2 |
| NFC | No | No |
| USB | USB Type-C 2.0 | USB Type-C |
| USB version | 2 | — |
| Satellite navigation | GLONASS, GALILEO, BDS | GLONASS, GALILEO |
| Features | ||
| Stereo speakers | No | No |
| 3.5 mm headphone jack | Yes | Yes |
| Fingerprint sensor | Rear | Side |
| Sensors | Fingerprint (rear-mounted), accelerometer | Fingerprint (side-mounted), accelerometer, compass |
| Software | ||
| OS at launch | Android 14 (Go edition) | Android 14 |
| Platform | Android | Android |
| Interface | — | MIUI |
| Major OS updates promised | — | 2 |
