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                            | Vivo V21 | Realme 15 | 
| Build | |
|---|---|
| OS | |
| Android 11 OS | Android 15 OS | 
| UI | |
| Funtouch OS 11.1 | Realme UI 6.0 | 
| Dimensions | |
| 159.7 x 73.9 x 7.3 mm | 163.34 x 75.88 x 7.66mm | 
| Weight | |
| 176 g | 185 g | 
| SIM | |
| Hybrid Dual SIM, Dual Standby, (Nano-SIM) | Nano-SIM + Nano-SIM | 
| Colors | |
| Dusk Blue, Sunset Dazzle, Arctic White | Silk Pink, Suit Titanium | 
| Network | |
|---|---|
| 2G Band | |
| SIM1: GSM 850 / 900 / 1800 / 1900 SIM2: GSM 850 / 900 / 1800 / 1900 | SIM1: GSM 850 / 900 / 1800 / 1900 SIM2: GSM 850 / 900 / 1800 / 1900 | 
| 3G | |
| Yes | Yes | 
| 4G | |
| Yes | Yes | 
| 5G | |
| No | Yes | 
| Processor | |
|---|---|
| CPU | |
| Octa-core (2 x 2.4 GHz Cortex-A76 + 6 x 2.0 GHz Cortex-A55) | 2.5 Ghz Octa Core | 
| Chipset | |
| MediaTek MT6853 Dimensity 800U 5G (7 nm) | Mediatek Dimensity 7300+ 5G (4 nm) | 
| GPU | |
| Mali-G57 MC3 | Mali-G615 MC2 | 
| Display | |
|---|---|
| Technology | |
| AMOLED Capacitive Touchscreen, 16M Colors, Multitouch | AMOLED Capacitive Touchscreen | 
| Size | |
| 6.44 Inches | 6.77 Inches | 
| Resolution | |
| 1080 x 2404 Pixels (~409 PPI) | 1080 x 2392 Pixels (~388 PPI) | 
| Extra Features | |
| 90Hz, HDR10+, 500 nits (typ) | 144Hz, 1600nit (HBM), 4500nit Peak Brightness | 
| Memory | |
|---|---|
| Built-in | |
| 128GB Built-in, 8GB RAM, UFS 2.2 | 512GB Built-in, 12GB RAM (+14GB Dynamic RAM), UFS 3.1 | 
| External Card | |
| microSDXC (dedicated slot) | No | 
| Camera | |
|---|---|
| Main | |
| Triple Camera: 64 MP, f/1.9, 26mm (wide), 1/1.72", PDAF + 8 MP, f/2.2, 16mm (ultrawide), 1/4.0", AF + 2 MP, f/2.4, (depth), dual-LED dual-tone flash | Dual Camera: 50 MP, f/1.8, 24mm (wide), 1/1.56", PDAF, OIS + 8 MP, f/2.2, 16mm (ultrawide), LED Flash | 
| Features | |
| OIS, Eye Autofocus, Night, Ultra-Wide Night, Ultra Stable Video, Super Macro, Bokeh Portrait, Multi-Style Portrait, HDR, panorama, Video (4K@30fps, 1080p@30/60fps) | HDR, Panorama, Video (4K@30fps, 1080p@30fps, gyro-EIS, OIS) | 
| Front | |
| 44 MP, f/2.0, (wide), AF, OIS, HDR, With Dual LED Flash, Video (4K@30fps (no OIS), 1080p@30fps) | 50 MP, f/2.4, 23mm (wide), Panorama, Video (4K@30fps, 1080p@30fps) | 
| Connectivity | |
|---|---|
| WLAN | |
| 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 | 
| Bluetooth | |
| v5.1 with A2DP, LE | v5.4 with A2DP, LE | 
| GPS | |
| Yes + A-GPS support, & GLONASS, BDS | Yes + A-GPS support & Glonass, BDS | 
| USB | |
| USB Type-C 2.0, USB On-The-Go | USB Type-C 2.0 | 
| Data | |
| GPRS, Edge, 3G (HSPA 42.2/5.76 Mbps), 4G, LTE | 2G GSM, 3G HSPA, 4G LTE, 5G Capable | 
| Sensors | |
|---|---|
| Accelerometer | |
| Yes | Yes | 
| Gyro | |
| Yes | Yes | 
| Compass | |
| Yes | Yes | 
| Proximity | |
| Yes | Yes | 
| FingerPrint | |
| Yes | Yes | 
| Features | |
|---|---|
| Audio | |
| Speaker Phone | 3.5mm Audio Jack, Dual Speaker | 
| Browser | |
| HTML5 | HTML5 | 
| Messaging | |
| SMS(threaded view), MMS, Email, Push Mail, IM | SMS(threaded view), MMS, Email, Push Mail, IM | 
| Games | |
| Built-in + Downloadable | Built-in + Downloadable | 
| Battery | |
|---|---|
| Capacity | |
| (Li-Po Non removable), 4000 mAh | Li-ion 7000 mAh | 
| Features | |
| Fast charging 33W, 63% in 30 min (advertised) | Fast battery 80W wired, 50% in 25 min | 
| Price | |
|---|---|
| Price in Rs. | |
| Rs. 59,999 PKR | Rs. 119,999 PKR | 
| Price in USD | |
| $208.33 USD | $416.66 USD |