Asus Zenfone 3s Max ZC521TL APN settings & network compatibility in United States
Asus Zenfone 3s Max ZC521TL network specifications
| OS | Android 7.0 (Nougat) |
| Network bands | GSM / HSPA / LTE |
| Speed | HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps |
| Network frequencies | GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 HSDPA 850 / 900 / 1900 / 2100 - Global 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 LTE band 1(2100), 3(1800), 5(850), 8(900), 40(2300) - India |
| SIM | Dual SIM (Micro-SIM/Nano-SIM, dual stand-by) |
| WLAN | Wi-Fi 802.11 a/b/g/n/ac, dual-band, WiFi Direct, hotspot |
| CPU | Octa-core 1.5 GHz Cortex-A53 |
| RAM | 3 GB |
| Internal memory | 32 GB |
