| Connectivity | 
                                                                                                  
                                                    | Bluetooth | Yes | Yes | Yes | Yes | 
                                                                                                    
                                                    | 3G | Yes | Yes | Yes | Yes | 
                                                                                                    
                                                    | 4G/LTE | Yes | Yes | Yes | Yes | 
                                                                                                    
                                                    | Radio | No | No | No | Stereo FM radio, RDS | 
                                                                                                    
                                                    | WiFi | Yes | Yes | Yes | Yes | 
                                                                                                    
                                                    | NFC | Yes | Yes | Yes | Yes | 
                                                                                                                                                                                                            
                                                  | Camera | 
                                                                                                  
                                                    | Front Camera | 13 MP | 13 MP | 13 MP | 1 | 
                                                                                                    
                                                    | Front Video Recording | 1080p@30fps (gyro-EIS) | 1080p@30fps | 1080p@30fps (5-axis gyro-EIS) | 720p@30fps | 
                                                                                                    
                                                    | Back Flash Light | Yes | Yes | Yes | Yes | 
                                                                                                    
                                                    | Back Camera | 19 MP | 19 MP | 19 MP | 8 MP | 
                                                                                                    
                                                    | Back Video Recording | 2160p@30fps, 1080p@60fps, 1080p@30fps (gyro-EIS), 720p@960fps | 2160p@30fps, 1080p@30fps (gyro-EIS), 720p@960fps, HDR | 2160p@30fps, 1080p@60fps, 1080p@30fps (5-axis gyro-EIS), 1080p@960fps, HDR | 1080p@30fps, HDR | 
                                                                                                    
                                                    | Front Flash Light |  |  | No |  | 
                                                                                                                                                                                                            
                                                  | Battery | 
                                                                                                  
                                                    | Type | Non-removable Li-Ion 2700 mAh battery | Non-removable Li-Ion 3230 mAh battery | Non-removable Li-Ion 3300 mAh battery | Non-removable Li-Ion 2500 mAh battery | 
                                                                                                                                                                                                            
                                                  | Performance | 
                                                                                                  
                                                    | Processor | Octa-core (4x2.45 GHz Kryo & 4x1.9 GHz Kryo) | Octa-core (4x2.45 GHz Kryo & 4x1.9 GHz Kryo) | Octa-core (4x2.7 GHz Kryo 385 Gold & 4x1.7 GHz Kryo 385 Silver) | Quad-core 1.4 GHz Cortex-A7 | 
                                                                                                    
                                                    | GPU | Adreno 540 | Adreno 540 | Adreno 630 | Adreno 305 | 
                                                                                                                                                                                                            
                                                  | Memory | 
                                                                                                  
                                                    | Internal Memory | 64 GB | 64 GB | 64 GB | 8 GB | 
                                                                                                    
                                                    | RAM | 4 GB RAM | 4 GB RAM | 4 GB RAM | 1 GB RAM | 
                                                                                                    
                                                    | Card Slot | microSD, up to 512 GB (uses SIM 2 slot) - dual SIM model only | microSD, up to 512 GB (uses SIM 2 slot) - dual SIM model only | microSD, up to 512 GB (uses SIM 2 slot) - dual SIM model only | microSD, up to 32 GB (dedicated slot) | 
                                                                                                                                                                                                            
                                                  | Display | 
                                                                                                  
                                                    | Screen Size | 5.2 inches | 5.46 inches | 6.0 inches | 5.3 inches | 
                                                                                                    
                                                    | Screen Resolution | 1080 x 1920 pixels | 3840 x 2160 pixels | 1440 x 2880 pixels | 720 x 1280 pixels | 
                                                                                                    
                                                    | Screen Type | IPS LCD capacitive touchscreen, 16M colors | IPS LCD capacitive touchscreen, 16M colors | P-OLED capacitive touchscreen, 16M colors | IPS LCD capacitive touchscreen, 16M colors | 
                                                                                                    
                                                    | Screen Protection | Corning Gorilla Glass 5 | Corning Gorilla Glass 5 | Corning Gorilla Glass 5 |  | 
                                                                                                                                                                                                            
                                                  | General Features | 
                                                                                                  
                                                    | Release Date | 2017, August | 2017, February | 2018, August | 2014, June | 
                                                                                                    
                                                    | SIM Support | Single SIM (Nano-SIM) or Hybrid Dual SIM (Nano-SIM, dual stand-by) | Single SIM (Nano-SIM) - G8141Hybrid Dual SIM (Nano-SIM, dual stand-by) - G8142 | Single SIM (Nano-SIM) or Hybrid Dual SIM (Nano-SIM, dual stand-by) | Micro-SIM | 
                                                                                                    
                                                    | Phone Dimensions | 5.83 x 2.89 x 0.29 in | 6.14 x 3.03 x 0.31 in | 6.22 x 2.87 x 0.39 in | 5.93 x 3.03 x 0.28 in | 
                                                                                                    
                                                    | Phone Weight | 155 g | 195 g | 193 g | 148 g | 
                                                                                                    
                                                    | Operating System | Android 8.0 (Oreo) | Android 7.1 (Nougat), upgradable to Android 8.0 (Oreo) | Android 9.0 (Pie) | Android 4.4.2 (KitKat) |