Asus Zenfone 3s Max ZC521TL The Asus Zenfone 3s Max ZC521TL is a budget-focused device, powered by the Mediatek MT6750 (28 nm), built for basic everyday tasks, with a 5,000 mAh battery for solid all-day use (2017).
2017 · Lower-mid-range · Android 7 (Nougat) ⓘ Grades compare this device against others in its own market segment (Mid-range), not against every device on the site.
⚡ Quick Specs
Size 5.2" · 149.5 x 73.7 x 8.9 mm (5.89 x 2.90 x 0.35 in)
Chipset Mediatek MT6750 (28 nm)
RAM 3GB
Storage 32GB
Main Camera 13 MP · Dual-LED dual-tone flash
⚖️ Compare With
Asus Zenfone 3s Max ZC521TL vs Asus Zenfone 4 Selfie ZB553KL Asus Zenfone 3s Max ZC521TL vs Asus Zenfone Max (M1) ZB555KL Asus Zenfone 3s Max ZC521TL vs Asus Zenfone Pegasus 3s Asus Zenfone 3s Max ZC521TL vs Asus Zenfone 4 Max Plus ZC554KL Asus Zenfone 3s Max ZC521TL vs Asus Zenfone 4 Max ZC520KL Asus Zenfone 3s Max ZC521TL vs Asus ZenFone Lite (L1) ZA551KL
✓︎ Pros
✓ Long 5,000 mAh battery, easily lasts a full day
✓ 5.2" IPS LCD display with accurate colours and wide viewing angles
✓ 3.5mm headphone jack for wired audio without adapters
⊗ Cons
✗ Basic Mediatek MT6750 (28 nm) for simple tasks only
✗ Only 3GB RAM — apps may reload frequently
⚠️ Not ideal for
Gaming Multitasking Multitasking
ℹ️ Overview
Announced
2017, January. Released 2017, February
⚙️ Performance
Chipset
Mediatek MT6750 (28 nm)
Entry-level — basic tasks only
CPU
Octa-core (4x1.5 GHz Cortex-A53 & 4x1.0 GHz Cortex-A53)
OS
Android 7 (Nougat), ZenUI 3
RAM
3GB
Apps may reload frequently
💻 Display
Sharpness
282 ppi
Adequate sharpness for daily use
Panel
IPS LCD
IPS: accurate colours, good brightness
📷 Camera
Main Camera
13 MP
Capable for everyday photos
Main Camera Features
Dual-LED dual-tone flash, panorama, HDR
🔋 Battery
Capacity
5,000 mAh
Solid day-to-day battery life
Type
Li-Po 5000 mAh, non-removable
📱 Design & Build
Weight
175g
Balanced size and weight
Dimensions
149.5 x 73.7 x 8.9 mm (5.89 x 2.90 x 0.35 in)
Sensors
Fingerprint (front-mounted), accelerometer, gyro, proximity, compass
📶 Network
Speed
HSPA 42.2/5.76 Mbps, LTE Cat4 150/50 Mbps
2G Bands
GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2
3G Bands
HSDPA 850 / 900 / 1900 / 2100 - Global
📡 Connectivity
WiFi
Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct
❓ Frequently Asked Questions
Does the Asus Zenfone 3s Max ZC521TL support 5G?› No, the Asus Zenfone 3s Max ZC521TL does not support 5G — it supports GSM / HSPA / LTE.
Does the Asus Zenfone 3s Max ZC521TL have NFC?› No, the Asus Zenfone 3s Max ZC521TL does not have NFC.
Does the Asus Zenfone 3s Max ZC521TL support wireless charging?› No, the Asus Zenfone 3s Max ZC521TL charges via cable only — no wireless charging.
Does the Asus Zenfone 3s Max ZC521TL support fast charging?› Charging details: Reverse wired.
Does the Asus Zenfone 3s Max ZC521TL have expandable storage?› Yes, the Asus Zenfone 3s Max ZC521TL supports microSDXC expandable storage.
Does the Asus Zenfone 3s Max ZC521TL support dual SIM?› The Asus Zenfone 3s Max ZC521TL SIM configuration: Nano-SIM + Micro-SIM.
Does the Asus Zenfone 3s Max ZC521TL have a headphone jack?› Yes, the Asus Zenfone 3s Max ZC521TL has a 3.5mm headphone jack.
Does the Asus Zenfone 3s Max ZC521TL have stereo speakers?› Speaker setup: Yes.
What Android version does the Asus Zenfone 3s Max ZC521TL ship with?› The Asus Zenfone 3s Max ZC521TL ships with Android 7 (Nougat), ZenUI 3.
What type of USB port does the Asus Zenfone 3s Max ZC521TL use?› The Asus Zenfone 3s Max ZC521TL uses microUSB 2.0, OTG.
Does the Asus Zenfone 3s Max ZC521TL support Wi-Fi 7?› The Asus Zenfone 3s Max ZC521TL supports Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct.
Does the Asus Zenfone 3s Max ZC521TL support Bluetooth LE Audio?› The Asus Zenfone 3s Max ZC521TL has 4.0, A2DP, EDR.
