Phone Comparison - Samsung Galaxy S21 Ultra 5G vs Samsung Galaxy A15 5G vs Xiaomi Redmi Note 13
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| Manufacturer | Samsung | Samsung | Xiaomi |
| Announced | 2021, January 14 | December 2023 | January 2024 |
| Status | Coming soon. Exp. release 2021, January 29 | Coming Soon - December 2023 | Coming Soon - January 2024 |
| Price | Rs. 105,999 ($0.00) [Similarly Priced] | - | Rs. 17,999 ($0.00) [Similarly Priced] |
| Colors | Phantom Black, Phantom Silver, Phantom Titanium, Phantom Navy, Phantom Brown | Black, Personality Yellow, Fantasy Blue, Optimistic Blue | Stealth Black, Arctic White, Prism Gold |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
165.1 x 75.6 x 8.9 mm (6.5 x 2.98 x 0.35 in) |
160.1 x 76.8 x 8.4 mm (6.3 x 3.02 x 0.33 in) |
161.1 x 75 x 7.6 mm (6.34 x 2.95 x 0.3 in) |
| Weight | 227 g (8.01 oz) | 200 g (7.05 oz) | 173.5 g (6.1.0.18 oz) |
| SIM Type | Single SIM (Nano-SIM and/or eSIM), Hybrid Dual SIM (Nano-SIM, dual stand-by) | Single SIM (Nano-SIM), Dual SIM (Nano-SIM, dual stand-by) | Hybrid Dual SIM (Nano-SIM, dual stand-by) |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (Dual SIM model only) CDMA2000 1xEV-DO |
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 / 1700(AWS) / 1900 / 2100 | HSDPA 850 / 900 / 2100 | HSDPA 850 / 900 / 2100 |
| 4G Network | LTE | LTE | 1, 3, 5, 8, 28 - India |
| 5G Network | SA/NSA/Sub6/mmWave | SA/NSA | 1, 3, 5, 8, 28, 40, 78 SA/NSA - India |
| Messaging | |||
| Build Features | - Fingerprint Sensor (under display, ultrasonic) Samsung Pay (Visa, MasterCard certified) IP68 dust/water resistant (up to 1.5m for 30 mins) Stylus support Samsung DeX, Samsung Wireless DeX (desktop experience support) ANT+ |
- Fingerprint Sensor (side-mounted) |
- Fingerprint Sensor (side-mounted) IP54, dust and splash resistant |
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| OS | Android 11 | Android 14 | Android 13 |
| User Interface | One UI 3.0 | One UI 6 | MIUI 14 |
| Processor | Octa-core (1x2.9 GHz Cortex-X1 & 3x2.80 GHz Cortex-A78 & 4x2.2 GHz Cortex-A55) - International / Octa-core (1x2.84 GHz Kryo 680 & 3x2.42 GHz Kryo 680 & 4x1.80 GHz Kryo 680 - USA/China/Korea, Exynos 2100 - Global / Qualcomm Snapdragon 875 - USA | Octa-core (2x2.2 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55), Mediatek Dimensity 6100+ (6 nm) | Octa-core (2x2.4 GHz Cortex-A76 & 6x2.0 GHz Cortex-A55), Mediatek Dimensity 6080 (6 nm) |
| GPU | Mali-G78 MP14 - International / Adreno 660 - USA/China/Korea | Mali-G57 MC2 | Mali-G57 MC2 |
| RAM | 16 GB | 8 GB | 12 GB |
| Internal Memory | 512 GB | 256 GB | 256 GB |
| External Memory | microSDXC (uses shared SIM slot) | microSDXC | microSDXC (uses shared SIM slot) |
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| Type | QHD+ Dynamic AMOLED 2X Display 120Hz Refresh Rate HDR10+ 1500 nits (peak) Corning Gorilla Glass Victus Always-on display |
FHD+ Super AMOLED Screen 90Hz Refresh Rate 800 Nits (HBM) |
FHD+ AMOLED Screen 120Hz Refresh Rate 1000 Nits (peak) Corning Gorilla Glass 5 |
| Colors | 16M Colour | 16M colors | 16M colors |
| Size | 6.8 inches | 6.5 inches | 6.67 inches |
| Resolution | 1440 x 3200 pixels (516 ppi) | 1080 x 2340 pixels (396 ppi) | 1080 x 2400 pixels (395 ppi) |
| Screen-to-Body Ratio | 89.46% | 84.56% | 88.71% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | FM radio (Snapdragon model only; market/operator dependent) | Unspecified | No |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 108 MP + 10 MP + 10 MP + 12 MP + 0.3 MP | 50 MP + 5 MP + 2 MP | 108 MP + 8 MP + 2 MP |
| Flash | LED flash | LED Flash | LED Flash |
| Features | 108 MP (2nd gen), f/1.8, 26mm (wide), 1/1.33", 0.8µm, PDAF, Laser AF, OIS 10 MP, f/4.9, 240mm (periscope telephoto), 1/3.24", 1.22µm, dual pixel PDAF, OIS, 10x optical zoom 10 MP, f/2.4, 70mm (telephoto), 1/3.24", 1.22µm, dual pixel PDAF, OIS, 3x optical zoom 12 MP, f/2.2, 13mm (ultrawide), 1/2.55", 1.4µm, dual pixel PDAF, Super Steady video auto-HDR, panorama |
50 MP, f/1.8, (wide), AF 5 MP, f/2.2, (ultrawide) 2 MP, f/2.4, (macro) Panorama, HDR |
108 MP, f/1.8, (wide), 0.64µm, PDAF 8 MP, f/2.2, (ultrawide) 2 MP, f/2.4, (depth) HDR, Panorama |
| Video | 8K@24fps, 4K@30/60fps, 1080p@30/60/240fps, 720p@960fps, HDR10+, stereo sound rec., gyro-EIS | 1080p@30fps | 1080p@30fps |
| Front Camera |
40 MP, f/2.2, 26mm (wide), 0.7µm, PDAF Dual video call, Auto-HDR 4K@30/60fps, 1080p@30fps [Similar] |
13 MP, f/2.0, (wide) 1080p@30fps [Similar] |
16 MP, (wide) HDR, panorama 1080p@30fps [Similar] |
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| GPRS | Yes | Yes | Yes |
| Edge | Yes | Yes | Yes |
| 3G | HSPA 42.2/5.76 Mbps, LTE-A (CA), 5G | HSPA, LTE, 5G | HSPA, LTE-A, 5G |
| Bluetooth | 5.2, A2DP, LE | Yes | 5.3, A2DP, LE |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n/ac/6e, dual-band, Wi-Fi Direct, hotspot | Yes | Wi-Fi 802.11 a/b/g/n/ac, dual-band |
| USB | USB Type-C 3.2, USB On-The-Go | USB Type-C 2.0 | USB Type-C 2.0, OTG |
| GPS | Yes, with A-GPS, GLONASS, BDS, GALILEO | GPS, GALILEO, GLONASS, BDS, QZSS | GPS, GLONASS |
| Browser | Yes | Yes | Yes |
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| Internal | 512 GB, 16 GB RAM or 256 GB, 12 GB RAM or 128 GB, 12 GB RAM UFS 3.1 | 256 GB, 8 GB RAM | 256 GB, 12 GB RAM or 256 GB, 8 GB RAM or 128 GB, 6 GB RAM UFS 2.2 |
| Expandable Storage | microSDXC (uses shared SIM slot) | microSDXC | microSDXC (uses shared SIM slot) |
| USB OTG | Supported | Not 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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| Barometer Sensor | |
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| NFC | |
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| Type | Non-removable Li-Po Battery Fast battery charging 25W USB Power Delivery 3.0 Fast Qi/PMA wireless charging 15W Reverse wireless charging 4.5W |
Non-removable Li-Po Battery Fast battery Charging 25W |
Non-removable Li-Po Battery Fast battery Charging 33W |
| Capacity | 5000 mAh | 5000 mAh | 5000 mAh |
| Stand by | - | - | - |
| Talk Time | - | - | - |
