Phone Comparison - Lenovo K4 Note vs Xiaomi Redmi Note 9 Pro (Global Version) vs Xiaomi Redmi Note 15 Pro
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| Manufacturer | Lenovo | Xiaomi | Xiaomi |
| Announced | January 2016 | April 2020 | December 2025 |
| Status | Available - January 2016 | Coming Soon - May 2020 | Coming Soon - December 2025 |
| Price | Rs. 10,999 ($161.75) [Similarly Priced] | - | - |
| Colors | Black | Tropical Green, Glacier White, Interstellar Gray | Black, Glacier Blue, Mist Purple, Titanium |
| Form Factor | Candybar | Candybar | Candybar |
| Dimension |
153.6 x 76.5 x 9.15 mm (6.05 x 3.01 x 0.36 in) |
165.8 x 76.7 x 8.8 mm (6.53 x 3.02 x 0.35 in) |
163.6 x 78.1 x 8 mm (6.44 x 3.07 x 0.31 in) |
| Weight | 158 g (5.57 oz) | 209 g (7.37 oz) | 210 g (7.41 oz) |
| SIM Type | - | 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 |
| 3G Network | HSDPA 900 / 1900 / 2100 | HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 | HSDPA 800 / 850 / 900 / 1700(AWS) / 1900 / 2100 |
| 4G Network | LTE | 1, 2, 3, 4, 5, 7, 8, 20, 28, 38, 40, 41 | 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 26, 28, 32, 38, 40, 41, 42, 48, 66, 71 |
| 5G Network | - | - | 1, 2, 3, 5, 7, 8, 12, 20, 26, 28, 38, 40, 41, 48, 66, 71, 77, 78 SA/NSA |
| Messaging | SMS, MMS, EMail, IM | ||
| Build Features | - Fingerprint Sensor - Dual Front Speakers - Fast Charging |
- Fingerprint Sensor (side-mounted) |
- Fingerprint Sensor (under display, optical) IP68/IP69K dust tight and water resistant (high pressure water jets; immersible up to 1.5m for 30 min) Manufacturer-rated water-resistance (up to 2m for 24 hours) Drop resistant up to 2.5m |
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| OS | Android OS, v5.1 (Lollipop) | Android 10 | Android 15 |
| User Interface | - | MIUI 11 | HyperOS 2 |
| Processor | Octa-core 1.3 GHz Cortex-A53, Mediatek MT6753 | Octa-core (2x2.3 GHz Kryo 465 Gold & 6x1.8 GHz Kryo 465 Silver), Qualcomm SM7125 Snapdragon 720G (8 nm) | Octa-core (4x2.6 GHz Cortex-A78 & 4x2.0 GHz Cortex-A55), Mediatek Dimensity 7400 Ultra (4 nm) |
| GPU | Mali-T720MP3 | Adreno 618 | Mali-G615 MC2 |
| RAM | 3 GB | 6 GB | 12 GB |
| Internal Memory | 16 GB | 128 GB | 512 GB |
| External Memory | microSD, up to 128 GB | microSDXC (dedicated slot) | No |
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| Type | Capacitive Touchscreen, Corning Gorilla Glass 3 | IPS LCD Capacitive Touchscreen, Corning Gorilla Glass 5 | FHD+ AMOLED Screen, 120Hz 3840Hz PWM, HDR10+, Dolby Vision, 3200 Nits (peak) Corning Gorilla Glass Victus 2, Mohs Level 5 |
| Colors | 16M colors | 16M colors | 68B colors |
| Size | 5.5 inches | 6.67 inches | 6.83 inches |
| Resolution | 1080 x 1920 pixels (401 ppi) | 1080 x 2400 pixels (395 ppi) | 1280 x 2772 pixels (447 ppi) |
| Screen-to-Body Ratio | 70.80% | 84.28% | 89.66% |
| Multi-Touch |  |
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| 3.5mm Jack | |
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| Radio | FM Radio | - | No |
| Games | Yes + Downloadable | Yes + Downloadable | Yes + Downloadable |
| Loud Speaker | |
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| Rear Camera | 13 MP, 4208 x 3120 pixels | 64 MP + 8 MP + 5 MP + 2 MP | 200 MP + 8 MP |
| Flash | Dual-LED (Dual Tone) | LED flash | LED Flash |
| Features | Phase Detection Auto focus, 1/3.06' Sensor Size, Geo-tagging, Touch Focus, Face Detection, HDR, Panorama | 64 MP, f/1.9, 26mm (wide), 1/1.72", 0.8µm, PDAF 8 MP, f/2.2, 119° (ultrawide), 1/4.0", 1.12µm 5 MP, f/2.4, (macro), 1/5.0", 1.12µm, AF 2 MP, f/2.4, (depth) HDR, panorama |
200 MP, f/1.7, 23mm (wide), 1/1.4", 0.56µm, multi-directional PDAF, OIS 8 MP, f/2.2, 15mm, 120˚ (ultrawide), 1/4.0", 1.12µm HDR, Panorama |
| Video | 1080p@30fps | 2160p@30fps, 1080p@30/60/120fps, 720p@960fps | 4K@30fps, 1080p@30/60/120fps, gyro-EIS, OIS |
| Front Camera | 5 MP, 1080p [Similar] |
16 MP, f/2.0, 26mm (wide), 1/3.1", 1.0µm HDR 1080p@30fps [Similar] |
20 MP, f/2.2, 25mm (wide), 1/4.0", 0.7µm HDR, panorama 1080p@30/60fps [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, LTE, 5G |
| Bluetooth | v4.0, A2DP, LE | 5.0, A2DP, LE | 5.4, A2DP, LE |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n, dual-band, Wi-Fi Direct, hotspot | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot | Wi-Fi 802.11 a/b/g/n/ac/6, dual-band, Wi-Fi Direct |
| USB | microUSB v2.0, USB Host, Fast Charge 2.0 | 2.0, Type-C 1.0 reversible connector | USB Type-C 2.0, OTG |
| GPS | Yes, with A-GPS, GLONASS | Yes, with A-GPS, GLONASS, GALILEO, BDS | GPS, GALILEO, GLONASS, QZSS, BDS |
| Browser | HTML5 | Yes | Yes |
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| Internal | 16 GB, 3 GB RAM | 128 GB, 6 GB RAM or 64 GB, 4 GB RAM (UFS 2.1) | 512 GB, 12 GB RAM or 512 GB, 8 GB RAM or 256 GB, 12 GB RAM or 256 GB, 8 GB RAM UFS 2.2 |
| Expandable Storage | microSD, up to 128 GB | microSDXC (dedicated slot) | No |
| 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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| NFC | |
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| Type | Non-removable Li-Po Battery | Non-removable Li-Po Battery Fast battery charging 30W |
Non-removable Si/C Li-Ion Battery Fast Battery Charging 45W wired 22.5W Reverse wired |
| Capacity | 3300 mAh | 5020 mAh | 6580 mAh |
| Stand by | Up to 265 h | - | - |
| Talk Time | Up to 22 h | - | - |
