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| Price In Pakistan | | Box Price | Rs. 20,999 - Rs. 24,999 | Rs. 219,999 - Rs. 254,999 |
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| Brand | Realme | Samsung |
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| Model No | RMX3581 | SM-S721B |
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| Launch | | Released | 2022, June 20 | 2025 |
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| Status | Available | Available |
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| Network | | Technology | GSM / HSPA / LTE | GSM / HSPA / LTE / 5G |
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| 4G bands | LTE band 1(2100), 3(1800), 5(850), 7(2600), 8(900), 34(2000), 38(2600), 39(1900), 40(2300), 41(2500) | LTE |
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| 5G bands | N/A | SA/NSA |
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| Design | | Dimensions | 164.1 x 75.6 x 8.5 mm | 158 x 76.4 x 8.4 mm |
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| Weight | 182 g | 209 g |
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| Build | Glass front, plastic frame, plastic back | N/A |
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| Colors | Lake Blue, Bamboo Green | Mint, Graphite, Purple, White |
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| Display | | Type | IPS LCD Capacitive Touchscreen, 16M Colors, Multitouch | Dynamic AMOLED 2X, 120Hz, Dolby Vision, HDR10+, 1450 nits (peak) |
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| Size | 6.5 Inches | 6.7 Inches |
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| Resolution | 720 x 1600 Pixels (~269 PPI) | 1080 x 2340 Pixels (~385 PPI) |
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| Processor | | OS | Android 11 OS | Android 14 OS |
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| Chipset | Unisoc Tiger T612 (12 nm) | Exynos 2400e (4 nm) |
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| CPU | Octa-core (2 x 1.8 GHz Cortex-A75 + 6 x 1.8 GHz Cortex-A55) | Octa-core (2 x 2.8 GHz Cortex-A78 + 6 x 2.0 GHz Cortex-A55) |
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| GPU | Mali-G57 | Xclipse 920 |
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| Memory | | Card slot | microSDXC (dedicated slot) | microSDXC (uses shared SIM slot) |
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| Storage | 32GB, 64GB | 128GB, 512GB |
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| RAM | 2GB, 3GB, 4GB | 6GB, 12GB |
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| Main Camera | | Single | 8 MP | N/A |
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| Dual | N/A | N/A |
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| Triple | N/A | 50 MP |
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| Quad | N/A | N/A |
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| Features | Geo-tagging, Phase detection, touch focus, Panorama, HDR | Dual-LED flash, HDR, panorama |
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| Video | 1080p@30fps | 4K@30fps, 1080p@30/60fps |
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| Selfie Camera | | Single | 5 MP | 10 MP |
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| Features | Geo-tagging, Phase detection, touch focus, Panorama, HDR | HDR, panorama |
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| Video | 720p@30fps | 4K@30fps, 1080p@30fps |
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| Sound | | Loudspeaker | Yes | Yes |
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| 3.5mm jack | Yes | Yes |
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| Connectivity | | WLAN | Wi-Fi 802.11 b/g/n, hotspot | Wi-Fi 802.11 a/b/g/n/ac, dual-band |
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| Bluetooth | v5.0 with A2DP, LE | v5.3 with A2DP, LE |
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| Positioning | Yes + A-GPS support, & GLONASS, BDS | Yes + GPS, GLONASS, GALILEO, BDS |
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| Features | | Sensors | Accelerometer, Proximity | Accelerometer, Compass, Fingerprint, Gyro, Proximity |
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| Extra | N/A | N/A |
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| Battery | | Type | 5000 mAh | 5000 mAh |
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| Charging | N/A | - Fast charging |
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