Phone Comparison - Samsung Galaxy J7 vs Oppo A31 vs Xiaomi Redmi 10A
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| Price Comparison (India) | - | - | |
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| Manufacturer | Samsung | Oppo | Xiaomi |
| Announced | June 2015 | February 2020 | March 2022 |
| Status | Available - June 2015 | Available - February 2020 | Coming Soon - March 2022 |
| Price | Rs. 13,400 ($197.06) [Similarly Priced] | Rs. 11,490 ($0.00) [Similarly Priced] | - |
| Colors | White, Black | Fantasy White, Mystery Black | Black, Silver, Blue |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
152.4 x 78.6 x 7.5 mm (6 x 3.09 x 0.3 in) |
163.9 x 75.5 x 8.3 mm (6.45 x 2.97 x 0.33 in) |
164.9 x 77 x 9 mm (6.49 x 3.03 x 0.35 in) |
| Weight | 171 g (6.03 oz) | 180 g (6.35 oz) | 194 g (6.84 oz) |
| SIM Type | - | Dual SIM (Nano-SIM, dual stand-by) | Dual SIM (Nano-SIM, dual stand-by) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 CDMA2000 1x |
| 3G Network | HSDPA 900 / 2100 | HSDPA 850 / 900 / 2100 | HSDPA 850 / 900 / 2100 |
| 4G Network | LTE | LTE (unspecified) | 1, 3, 5, 8, 34, 38, 39, 40, 41 |
| Messaging | SMS, MMS, EMail, IM | ||
| Build Features | - | - Fingerprint Sensor |
- Fingerprint Sensor (rear-mounted) |
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| OS | Android OS, v5.1 (Lollipop) | Android 9.0 (Pie) | Android 11 |
| User Interface | - | ColorOS 6.1 | MIUI 12.5 |
| Processor | Octa-core 1.2 GHz, Exynos 7580 | Octa-core (4x2.3 GHz Cortex-A53 & 4x1.8 GHz Cortex-A53), Mediatek MT6765V/CB Helio P35 (12nm) | Octa-core (4x2.0 GHz Cortex-A53 & 4x1.5 GHz Cortex-A53), MediaTek MT6762G Helio G25 (12 nm) |
| GPU | Mali-T720 | PowerVR GE8320 | PowerVR GE8320 |
| RAM | 1.5 GB | 4 GB | 6 GB |
| Internal Memory | 16 GB | 128 GB | 128 GB |
| External Memory | microSD, up to 128 GB | microSDXC (dedicated slot) | microSDXC |
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| Type | Super AMOLED Capacitive Touchscreen | IPS LCD Capacitive Touchscreen | IPS LCD Screen |
| Colors | 16M colors | 16M colors | 16M Colors |
| Size | 5.5 inches | 6.5 inches | 6.53 inches |
| Resolution | 720 x 1280 pixels (267 ppi) | 720 x 1600 pixels (270 ppi) | 720 x 1600 pixels (269 ppi) |
| Screen-to-Body Ratio | 69.63% | 82.39% | 80.89% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | FM radio with RDS; recording | FM radio | No |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 13 MP, 4128 x 3096 pixels | 12 MP + 2 MP + 2 MP | 13 MP |
| Flash | LED flash | LED Flash | LED Flash |
| Features | Auto focus, Geo-tagging, Touch Focus, Beauty Face, Continuous Shots, Sensor Size: 1/3.06-inch, F1.9, Interval Shot, Panorama, Sports Mode, Sound and Shot Mode | 12 MP, f/1.8, (wide), PDAF 2 MP, f/2.4, 27mm (macro), 1/5.0", 1.75µm 2 MP, f/2.4, (depth) HDR, Panorama |
13 MP, AF |
| Video | 1080p@30fps | 1080p@30fps | 1080p@30fps |
| Front Camera | 5 MP [Similar] | 8 MP, f/2.0, HDR, 1080p@30fps [Similar] |
5 MP HDR 1080p@30fps [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps | HSPA 42.2/5.76 Mbps, LTE-A | HSPA 42.2/5.76 Mbps, LTE |
| Bluetooth | v4.1, A2DP | 5.0, A2DP, LE | 5.0, A2DP, LE |
| Wi-Fi | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot |
| USB | microUSB v2.0 | microUSB 2.0, USB On-The-Go | microUSB 2.0 |
| GPS | Yes, with A-GPS, GLONASS | Yes, with A-GPS, BDS | Yes, with A-GPS, GLONASS, BDS |
| Browser | HTML5 | Yes | Yes |
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| Internal | 16 GB, 1.5 GB RAM | 128 GB, 4 GB RAM | 128 GB, 6 GB RAM or 128 GB, 4 GB RAM or 64 GB, 4 GB RAM |
| Expandable Storage | microSD, up to 128 GB | microSDXC (dedicated slot) | microSDXC |
| USB OTG | - | Supported | Not Supported |
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| Fingerprint | |
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| Proximity Sensor | |
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| Accelerometer Sensor | |
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| NFC | |
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| Type | Li-Ion Battery | Non-removable Li-Po Battery | Non-removable Li-Po Battery Battery Charging 10W |
| Capacity | 3000 mAh | 4230 mAh | 5000 mAh |
| Stand by | Up to 354 h | - | - |
| Talk Time | Up to 18 h (3G) | - | - |
Rs. 14,249 
Rs. 14,190 
