Phone Comparison - Samsung Galaxy A7 (2018) vs Samsung Galaxy A21s vs Realme C21
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| Price Comparison (India) | - | ||
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| Manufacturer | Samsung | Samsung | realme |
| Announced | September 2018 | Expected Announcement - May 2020 | 2021, March 05 |
| Status | Available | Rumored | Available. Released 2021, March 05 |
| Price | Rs. 18,990 ($0.00) [Similarly Priced] | - | Rs. 8,999 ($0.00) [Similarly Priced] |
| Colors | Black, blue, gold, pink | Black, White, Blue | Cross Black, Cross Blue |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
159.8 x 76.8 x 7.5 mm (6.29 x 3.02 x 0.3 in) |
8.9 mm thickness (0.35 in thickness) |
165.2 x 76.4 x 8.9 mm (6.5 x 3.01 x 0.35 in) |
| Weight | 168 g (5.93 oz) | 191 g (6.74 oz) | 190 g (6.7 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 / 1900 / 2100 - A750F/DS, A750FN/DS HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 - A750G |
HSDPA 850 / 900 / 1900 / 2100 | HSDPA 850 / 900 / 2100 |
| 4G Network | LTE band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 20(800), 38(2600), 40(2300), 41(2500) - A750F/DS, A750FN/DS | LTE | 1, 3, 5, 7, 8, 20, 28, 38, 40, 41 |
| SAR EU |
0.34 W/kg (head) 1.43 W/kg (body) |
- W/kg (head) - W/kg (body) |
- W/kg (head) - W/kg (body) |
| Messaging | |||
| Build Features | Fingerprint Sensor Samsung Pay |
- Fingerprint Sensor |
- Fingerprint Sensor (rear-mounted) |
| Notification LED | Yes | - | - |
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| OS | Android 8.0 (Oreo), planned upgrade to Android 9.0 (Pie) | Android 10.0 | Android 10 |
| User Interface | - | One UI 2.0 | Realme UI 1.0 |
| Processor | Octa-core (2x2.2 GHz Cortex-A73 & 6x1.6 GHz Cortex-A53), Exynos 7885 Octa (14 nm) | Octa-core 2.0 GHz, Exynos 850 | Octa-core (4x2.3 GHz Cortex-A53 & 4x1.8 GHz Cortex-A53), MediaTek Helio G35 (12 nm) |
| GPU | Mali-G71 | - | PowerVR GE8320 |
| RAM | 4/6 GB | 3 GB | 4 GB |
| Internal Memory | 128 GB | 64 GB | 64 GB |
| External Memory | microSD, up to 512 GB (dedicated slot) | microSDXC | microSDXC (dedicated slot) |
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| Type | Super AMOLED Capacitive Touchscreen, Corning Gorilla Glass (unspecified Version) | PLS TFT Capacitive Touchscreen | HD+ IPS LCD Screen |
| Colors | 16M colors | 16M colors | 16M Colour |
| Size | 6.0 inches | 6.55 inches | 6.5 inches |
| Resolution | 1080 x 2220 pixels (411 ppi) | 720 x 1600 pixels (268 ppi) | 720 x 1600 pixels (270 ppi) |
| Screen-to-Body Ratio | 74.61% | - | 80.78% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | FM radio | - | FM radio |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 24 MP + 8 MP + 5 MP | 48 MP + 8 MP + 2 MP | 13 MP + 2 MP + 2 MP |
| Flash | LED Flash | LED Flash | LED Flash |
| Features | 24 MP, f/1.7, 27mm (wide), PDAF 8 MP, f/2.4, 18mm (ultrawide) 5 MP, f/2.2, depth sensor Panorama, HDR |
48 MP, f/2.0, 26mm (wide), 1/2.0", 0.8µm, PDAF 8 MP, f/2.4, (ultrawide), 1/4.0", 1.12µm 2 MP, f/2.4, (macro) Panorama, HDR |
13 MP, f/2.2, 26mm (wide), 1/3.06", 1.12µm, PDAF 2 MP, f/2.4, (macro) 2 MP, f/2.4, (depth) HDR, panorama |
| Video | 1080p@30fps (gyro-EIS) | 1080p@30fps | 1080p@30fps |
| Front Camera |
24 MP, f/2.0, 26mm (wide) HDR, 1080p@30fps [Similar] |
13 MP, f/2.3, 29mm (normal), 1/3.1", 1.12µm HDR, Panorama 1080p@30fps [Similar] |
5 MP, f/2.2, (wide), 1/5.0", 1.12µm HDR 1080p@30fps [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSPA 42.2/5.76 Mbps, LTE-A (2CA) Cat6 300/50 Mbps | HSPA 42.2/5.76 Mbps, LTE-A | HSPA 42.2/5.76 Mbps, LTE |
| Bluetooth | 5.0, A2DP, LE | 5.0, A2DP, LE | 5.1, A2DP, LE |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n/ac, dual-band, WiFi Direct, hotspot | 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 |
| USB | microUSB 2.0 | Yes | microUSB 2.0, USB On-The-Go |
| GPS | Yes, with A-GPS, GLONASS, BDS | Yes, with A-GPS | Yes, with A-GPS, GLONASS, BDS |
| Browser | Yes | Yes | Yes |
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| Internal | 128 GB, 4/6 GB RAM or 64 GB, 4 GB RAM | 64 GB, 3 GB RAM or 32 GB, 3 GB RAM | 64 GB, 4 GB RAM or 32 GB, 3 GB RAM eMMC 5.1 |
| Expandable Storage | microSD, up to 512 GB (dedicated slot) | microSDXC | microSDXC (dedicated slot) |
| USB OTG | Supported | Supported | 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 | Non-removable Li-Po Battery Battery Charging 10W |
Non-removable Li-Po Battery Battery Charging 10W |
| Capacity | 3300 mAh | 5000 mAh | 5000 mAh |
| Stand by | - | - | - |
| Talk Time | - | - | - |
Rs. 18,990 
Rs. 8,999 
