| Hardware and OS | Asus Zenfone 3s Max ZC521TL | |
| Operating system | Android 7 (Nougat); ZenUI 3 | |
| Processor | Octa-core (4x1.5 GHz Cortex-A53 & 4x1.0 GHz Cortex-A53) | |
| Chipset | Mediatek MT6750 (28 nm) | |
| GPU | Mali-T860MP2 | |
| Internal memory | 32 GB, 3 GB RAM | |
| External memory | microSD, up to 256 GB (uses SIM 2 slot) | |
| Display | Asus Zenfone 3s Max ZC521TL | other phones |
| Type | IPS LCD | |
| Size | 5.2" inc | |
| Resolution | 720 x 1280 px | |
| Touchscreen | capacitive touchscreen | |
| Display area | 74.5 cm2 | |
| Display aspect ratio | 16:9 (height:width) | |
| Pixel Density | 282 PPI | |
| Colors | 16M | |
| Connectivity | Asus Zenfone 3s Max ZC521TL | other phones |
| 2G Network | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 | |
| 3G Network | HSDPA 850 / 900 / 1900 / 2100 - Global | |
| 4G Network | LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 18(800), 19(800), 26(850), 28(700), 38(2600), 41(2500) - Taiwan | |
| Wi-Fi | Wi-Fi 802.11 a/b/g/n/ac, dual-band, WiFi Direct, hotspot | |
| Network | GSM / HSPA / LTE | |
| SIM card | Hybrid Dual SIM (Micro-SIM/Nano-SIM, dual stand-by) | |
| Bluetooth | 4.0, A2DP, EDR | |
| Edge | Yes | |
| GPRS | Yes | |
| GPS | Yes, with A-GPS, GLONASS, BDS | |
| Speed | HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps | |
| USB | microUSB 2.0, USB On-The-Go | |
| Camera | Asus Zenfone 3s Max ZC521TL | other phones |
| Main camera | 13 MP, Single | |
| Specs | 13 MP, AF, f/2.0 | |
| Features | Dual-LED dual-tone flash, panorama, HDR | |
| Video | 1080p@30fps | |
| Selfie camera | 8 MP, Single | |
| Multimedia | Asus Zenfone 3s Max ZC521TL | other phones |
| 3.5 mm Jack | Yes | |
| Radio | FM radio | |
| Design | Asus Zenfone 3s Max ZC521TL | other phones |
| Colors | Gold, Black | |
| Weight | 175 g | |
| Battery | Asus Zenfone 3s Max ZC521TL | other phones |
| Battery capacity | 5000 mAh, Non-removable Li-Po | |
| Battery life | Stand by time- Up to 816 h (3G)
Talking time- Up to 28 h (3G)
| |
| Other | Asus Zenfone 3s Max ZC521TL | other phones |
| Release date | 2017, January | |
| Sensors | Fingerprint (front-mounted), accelerometer, gyro, proximity, compass | |
