Phone Comparison - Samsung Galaxy A02 vs Samsung Galaxy A15 vs Xiaomi Redmi A3x
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| Manufacturer | Samsung | Samsung | Xiaomi |
| Announced | 2021, January 27 | December 2023 | May 2024 |
| Status | Available. Released 2021, January 27 | Coming Soon - December 2023 | Available - May 2024 |
| Colors | Black, Blue, Red | Black, Personality Yellow, Fantasy Blue, Optimistic Blue | Midnight Black, Moonlight White, Aurora Green |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
164 x 75.9 x 9.1 mm (6.46 x 2.99 x 0.36 in) |
160.1 x 76.8 x 8.4 mm (6.3 x 3.02 x 0.33 in) |
168.4 x 76.3 x 8.3 (6.63 x 3 x 0.33) |
| Weight | 206 g (7.27 oz) | 200 g (7.05 oz) | - |
| SIM Type | Single SIM (Nano-SIM), Dual SIM (Nano-SIM, dual stand-by) | Single SIM (Nano-SIM), 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 (dual-SIM model only) | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual sim model only) | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 |
| 3G Network | HSDPA 850 / 900 / 2100 HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 |
HSDPA 850 / 900 / 2100 | HSDPA 850 / 900 / 2100 |
| 4G Network | LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900) 20(800), 28(700), 32(1500), 38(2600), 40(2300), 41(2500) | LTE | LTE |
| Messaging | |||
| Build Features | - | - Fingerprint Sensor |
- Fingerprint Sensor |
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| OS | Android 10 | Android 14 | Android 14 |
| User Interface | One UI 2.5 | One UI 6 | MIUI |
| Processor | Octa-core 1.8 GHz Cortex-A53, Qualcomm SM4250 Snapdragon 450 (11 nm) | Octa-core (2x2.2 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55), Mediatek Helio G99 (6nm) | Octa-core, Unisoc T603 |
| GPU | Adreno 506 | Mali-G57 MC2 | - |
| RAM | 2 GB | 8 GB | 3 GB |
| Internal Memory | 32 GB | 256 GB | 64 GB |
| External Memory | microSDXC (dedicated slot) | microSDXC | microSDXC (dedicated slot) |
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| Type | PLS TFT Display | FHD+ Super AMOLED Screen 90Hz Refresh Rate 800 Nits (HBM) |
HD+ IPS LCD Screen 90Hz Refresh Rate, Corning Gorilla Glass 3 |
| Colors | 16M Colour | 16M colors | 16M colors |
| Size | 6.5 inches | 6.5 inches | 6.71 inches |
| Resolution | 720 x 1520 pixels (259 ppi) | 1080 x 2340 pixels (396 ppi) | 720 x 1650 pixels (268 ppi) |
| Screen-to-Body Ratio | 84.56% | 84.56% | 83.05% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | FM radio | Unspecified | FM radio |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 13 MP + 2 MP | 50 MP + 5 MP + 2 MP | 8 MP + 0.08 MP |
| Flash | LED Flash | LED Flash | LED Flash |
| Features | 13 MP, f/2.2, 28mm (wide), 1/3.1", 1.12µm, AF 2 MP, f/2.4, (depth) |
50 MP, f/1.8, (wide), AF 5 MP, f/2.2, (ultrawide) 2 MP, f/2.4, (macro) Panorama, HDR |
8 MP, f/2.0, (wide) 0.08 MP (auxiliary lens) HDR |
| Video | 1080p@30fps | 1080p@30fps | 1080p@30fps |
| Front Camera | 8 MP, f/2.2, 1/4", 1.12µm [Similar] |
13 MP, f/2.0, (wide) 1080p@30fps [Similar] |
5 MP, f/2.2, (wide) 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, LTE | HSPA, LTE |
| Bluetooth | 4.2, A2DP, LE | Yes | Yes |
| Wi-Fi | Wi-Fi 802.11 b/g/n, Wi-Fi Direct, hotspot | Yes | Yes |
| USB | microUSB 2.0 | USB Type-C 2.0 | USB Type-C |
| GPS | Yes, with A-GPS, GLONASS, GALILEO, BDS | GPS, GALILEO, GLONASS, BDS, QZSS | GPS, GLONASS, GALILEO, BDS |
| Browser | Yes | Yes | Yes |
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| Internal | 32 GB, 2 GB RAM | 256 GB, 8 GB RAM or 128 GB, 8 GB RAM | 64 GB, 3 GB RAM eMMC5.1 |
| Expandable Storage | microSDXC (dedicated slot) | microSDXC | microSDXC (dedicated slot) |
| USB OTG | Not Supported | Not Supported | Not Supported |
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| Fingerprint | |
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| Proximity Sensor | |
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| Accelerometer Sensor | |
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| Magnetic-Field Sensor (Compass) | |
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| Gyroscope Sensor | |
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| NFC | |
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| Type | Non-removable Li-Po Battery Battery Charging 10W |
Non-removable Li-Po Battery Fast battery Charging 25W |
Non-removable Li-Po Battery Battery Charging 10W |
| Capacity | 5000 mAh | 5000 mAh | 5000 mAh |
| Stand by | - | - | - |
| Talk Time | - | - | - |
