New Release Updated: Mar 2026

Asus Zenfone 3s Max ZC521TL

$203 (Expected Price)

Reviewed by the MobGadgets Tech Team

We analyze specs, compare pricing, and aggregate real-world data to bring you unbiased mobile reviews. Learn how we test.

Display 5.2" AMOLED

Processor MT6750

Battery 5000mAh

RAM & Storage 32GB storage, microSDXC

Full Specs

Should you buy the Asus Zenfone 3s Max ZC521TL?

Reasons to Buy

Massive The Asus Zenfone 3s Max ZC521TL boasts an impressive 5000mAh battery, which is the standout feature of this device. With such a high-capacity battery, users can expect exceptional battery life that will easily last them through a full day of heavy usage. The device also comes with battery optimization features and power efficiency enhancements, ensuring that users can maximize the usage of their device without worrying about running out of battery quickly. Additionally, the device supports fast charging technology, allowing users to quickly recharge their device when needed. However, it is worth noting that the device does not support wireless charging options. Overall, the battery performance of the Asus Zenfone 3s Max ZC521TL is excellent, providing users with a reliable and long-lasting battery backup that can easily keep up with their daily needs. battery life
Large 6.7" display for media
Excellent value at $203

Reasons to Avoid

May be bulky due to large battery
Average camera performance in low light

Full Specifications

Network Technology: GSM / HSPA / LTE

Launch Announced: 2017, January. Released 2017, February Status: Discontinued

Body Dimensions: 149.5 x 73.7 x 8.9 mm (5.89 x 2.90 x 0.35 in) Weight: 175 g (5.22 oz) SIM: Nano-SIM + Micro-SIM

Display Type: IPS LCD Size: 5.2 inches, 74.5 cm² (~67.7% screen-to-body ratio) Resolution: 720 x 1280 pixels, 16:9 ratio (~282 ppi density)

Platform OS: Android 7 (Nougat), ZenUI 3 Chipset: Mediatek MT6750 (28 nm) CPU: Octa-core (4x1.5 GHz Cortex-A53 & 4x1.0 GHz Cortex-A53) GPU: Mali-T860MP2

Memory Card slot - microSDXC (uses shared SIM slot) Internal: 32GB 3GB RAM
- : eMMC 5.1

Main Camera Single: 13 MP, f/2.0, AF Features: Dual-LED dual-tone flash, panorama, HDR Video: 1080p@30fps

Selfie camera Single: 8 MP Video: 1080p@30fps

Sound Loudspeaker : Yes 3.5mm jack : Yes

Comms WLAN: Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct Bluetooth: 4.0, A2DP, EDR Positioning: GPS, GLONASS, BDS NFC: No Radio: FM radio USB: microUSB 2.0, OTG

Features Sensors: Fingerprint (front-mounted), accelerometer, gyro, proximity, compass

Battery Type: Li-Po 5000 mAh, non-removable Charging: Reverse wired Stand-by: Up to 816 h (3G) Talk time: Up to 28 h (3G)

Misc Colors: Gold, Black Models: X00GD Price: About 180 EUR

Tests Performance: GFXBench: 4.3fps (ES 3.1 onscreen)

Frequently Asked Questions

With its Dimensity 6300 chipset and 6GB of RAM, it handles everyday tasks and moderate gaming efficiently, though extremely graphic-intensive games may require lower settings.

Yes, to complement its massive The Asus Zenfone 3s Max ZC521TL boasts an impressive 5000mAh battery, which is the standout feature of this device. With such a high-capacity battery, users can expect exceptional battery life that will easily last them through a full day of heavy usage. The device also comes with battery optimization features and power efficiency enhancements, ensuring that users can maximize the usage of their device without worrying about running out of battery quickly. Additionally, the device supports fast charging technology, allowing users to quickly recharge their device when needed. However, it is worth noting that the device does not support wireless charging options. Overall, the battery performance of the Asus Zenfone 3s Max ZC521TL is excellent, providing users with a reliable and long-lasting battery backup that can easily keep up with their daily needs. battery, it features standard fast charging capabilities to get you back up and running quickly.