Summary | 72 Score | 77 Score | 80 Score | 77 Score |
| Performance | Apple A9 2 GB RAM iOS 9, Upgradable to iOS 10 | Qualcomm Snapdragon 636 6 GB RAM Android Oreo 8.1 | Hisilicon Kirin 710 4 GB RAM Android Oreo 8.0 | Qualcomm Snapdragon 660 4 GB RAM Android 8.1 Oreo |
| Display | 4.7 inch 750 x 1334 pixels 326 PPI Density | 5.99 inch 1080 x 2160 pixels 402 PPI Density | 6.5 inch 1080 x 2340 pixels 397 PPI Density | 5.99 inch 1080 x 2160 pixels 403 PPI Density |
| Camera | 12 MP (Main) 5 MP (Front) 4K Video Recording | 13 + 5 MP (Main) 8 MP (Front) Dual Camera | 20 + 2 MP (Main) 16 MP (Front) Dual Camera | 20 + 12 MP (Main) 20 MP (Front) 4K Video Recording Dual Camera |
| Battery | 1715 mAh Li-Po | 5000 mAh Li-Ion | 3750 mAh Li-Po | 3010 mAh Li-Po |
Display |
| Screen Size | 4.7 inch | 5.99 inch | 6.5 inch | 5.99 inch |
| Screen Resolution | 750x1334 pixels | 1080 x 2160 pixels | 1080 x 2340 pixels | 1080 x 2160 pixels |
| Pixel Density | 326 PPI | 402 PPI | 397 PPI | 403 PPI |
| Display Type | LED-backlit IPS LCD, capacitive touchscreen, 16M colors | Full HD+ | IPS LCD Full view Display | FHD IPS, 2.5D Curved glass |
| Gorilla Glass | - | - | Yes | Yes |
| Screen Protection | Ion-strengthened glass, oleophobic coating | - | Corning Gorilla Glass | Corning Gorilla Glass 5 |
Chipset |
| Brand | Apple Mobiles | Asus Mobiles | Huawei Mobiles | Xiaomi Mobiles |
| Chipset | Apple A9 | Qualcomm Snapdragon 636 | Hisilicon Kirin 710 | Qualcomm Snapdragon 660 |
| Processor | Dual-core 1.84 GHz Twister | 1.8GHz Octa Core Processor | Octa core processor | 2GHz Octa-core Processor |
| RAM | 2 GB RAM | 6 GB RAM | 4 GB RAM | 4 GB RAM |
| GPU | PowerVR GT7600 (six-core graphics) | Adreno 509 | Mali-G51 MP4 | Adreno 512 |
Camera |
| Rear Camera Resolution | 12 MP | 13 + 5 MP | 20 + 2 MP | 20 + 12 MP |
| Front Camera Resolution | 5 MP | 8 MP | 16 MP | 20 MP |
| Video | 4K Video Recording | | | 4K Video Recording |
| Camera Features | Autofocus, Touch Focus, Flash, Panorama, Geo-Tagging | Autofocus, Touch Focus, Flash, Panorama | Autofocus, Touch Focus, Flash, Panorama, Geo-Tagging | Autofocus, Touch Focus, Flash, Panorama, Geo-Tagging |
General |
| Operating System | iOS | Android | Android | Android |
| OS Version | iOS 9, Upgradable to iOS 10 | Android Oreo 8.1 | Android Oreo 8.0 | Android 8.1 Oreo |
| Weight | 143 g | 180 g | 175 g | 168 g |
| Dimensions | 138.3 x 67.1 x 7.1 mm | 159 x 76 x 8.46 mm | 160.4 x 76.6 x 7.8 mm | 158.7 x 75.4 x 7.3 mm |
| Thickness | 7.1mm | 8.46mm | 7.8mm | 7.3mm |
Storage |
| Internal Storage | 32 GB | 64 GB | 64 GB | 64 GB |
| Card Slot | No | microSD, Up to 2TB | microSD, Up to 400 GB | No microSD |
| Other | 32GB storage, no card slot | 64 GB, Expandable up to 2TB | | |
Communication |
| SIM Card Slots | Single SIM | Dual SIM | Dual SIM | Dual SIM |
| SIM Card Type | Nano-SIM | Nano-SIM | Nano-SIM | Nano-SIM |
| Bluetooth | v4.2, A2DP, LE | v4.2 | v4.2 | v5.0 |
| 3.5 mm Jack | Yes | Yes | Yes | Yes |
| NFC | Yes (Apple Pay only) | | No | No |
Connectivity |
| VoLTE | | Dual SIM Dual VoLTE | Dual SIM Dual VoLTE | |
| 4G | LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 13(700), 17(700), 18(800), 19(800), 20(800), 25(1900), 26(850), 28(700), 29(700) - A1688 | TD-LTE 2600(band 38) / 2300(band 40) / 2500(band 41) / 1900(band 39) FD-LTE 2100(band 1) / 1800(band 3) / 2600(band 7) / 900(band 8) | TD-LTE 2300(band 40) FD-LTE 1800(band 3) | LTE - TDD Band (40 / 41), FDD Band (1 / 3 / 5) |
| 3G | HSDPA 850 / 900 / 1700 / 1900 / 2100 | UMTS 1900 / 2100 / 850 / 900 MHz | UMTS 2100 / 900 MHz | UMTS 2100 / 900 MHz |
| 2G | GSM 850 / 900 / 1800 / 1900 | GSM 1800 / 1900 / 850 / 900 MHz | GSM 1800 / 1900 / 850 / 900 MHz | GSM 1800 / 1900 / 850 / 900 MHz |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n/ac, dual-band, hotspot | 802.11 a/b/g/n/ac | Wi-Fi 802.11 a/b/g/n | Wi-Fi 802.11, b/g/n |
| GPS | Yes, with A-GPS, GLONASS | A-GPS | A-GPS | A-GPS |
| GPRS | | | | |
| EDGE | | | | |
| Radio | | | | |
Battery |
| Battery Capacity | 1715 mAh | 5000 mAh | 3750 mAh | 3010 mAh |
| Battery Type | Li-Po | Li-Ion | Li-Po | Li-Po |
| Standby Time | Up to 240 h (3G) | | Upto 647 hrs | |
| Talk Time | Up to 14 h (3G) | | Upto 21 Hrs | |
Other Features |
| Fingerprint Scanner | | | | |
| Waterproof | | | | |
| Sensors | Accelerometer gyro proximity compass barometer | Accelerometer proximity compass | Proximity sensor Ambient light sensor Compass Gravity sensor Phone status indicator | Ambient Light Sensor Proximity Sensor E-compass Accelerometer Gyroscope Hall Sensor |
| Messaging | iMessage, SMS (threaded view), MMS, Email, Push Email | | | |
| Java | No | | | |
| Other | Active noise cancellation with dedicated mic , Siri natural language commands and dictation , iCloud cloud service , iCloud Keychain , TV-out , Maps , Organizer , Document editor , Photo/video editor | | | |