| Prices | Price (USD) | USD $350.00 USD |
|---|---|---|
| Network | Technology |
GSM / HSPA / LTE
|
| Launch | Announced | 2017, August. Released 2017, October |
| Status | Discontinued | |
| Body | Dimensions | 156.9 x 75.6 x 7.6 mm (6.18 x 2.98 x 0.30 in) |
| Weight | 175 g (6.17 oz) | |
| Build | Glass front (Gorilla Glass 5), glass back (Gorilla Glass 5), aluminum frame | |
| SIM | Nano-SIM + Nano-SIM | |
| Display | Type | AMOLED |
| Size | 5.5 inches, 83.4 cm2 (~70.3% screen-to-body ratio) | |
| Resolution | 1080 x 1920 pixels, 16:9 ratio (~401 ppi density) | |
| Protection | Corning Gorilla Glass 5 | |
| Platform | OS | Android 7.1.1 (Nougat), upgradable to Android 8 (Oreo), ZenUI 4 |
| Chipset | Qualcomm MSM8998 Snapdragon 835 (10 nm) | |
| CPU | Octa-core (4x2.45 GHz Kryo & 4x1.9 GHz Kryo) | |
| GPU | Adreno 540 | |
| Memory | Card slot | microSDXC (uses shared SIM slot) |
| Internal | 64GB 6GB RAM, 128GB 6GB RAM | |
| Main Camera | Dual |
12 MP, f/1.7, 25mm (wide), 1/2.55", 1.4µm, dual pixel PDAF, 4-axis OIS 16 MP, 50mm (telephoto), 1/3.1", 1.0µm, AF, 2x optical zoom |
| Features | Laser AF, color spectrum sensor, LED flash, HDR, panorama | |
| Video | 4K@30fps, 1080p@30/60fps, 1080p@120fps, 720p@240fps | |
| Selfie camera | Single | 8 MP, f/1.9, 22mm (wide), 1/3.2", 1.4µm, PDAF |
| Features | HDR | |
| Video | 1080p@30fps | |
| Sound | Loudspeaker | Yes, dual speakers |
| 3.5mm jack | Yes | |
| Features | 24-bit/192kHz audio | |
| Comms | WLAN | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct |
| Bluetooth | 5.0, A2DP, EDR, LE, aptX | |
| Positioning | GPS, GLONASS, BDS, GALILEO | |
| NFC | Yes | |
| Radio | FM radio | |
| USB | USB Type-C 2.0, OTG | |
| Infrared port | Yes | |
| Features | Sensors | Fingerprint (front-mounted), accelerometer, gyro, proximity, compass |
| Battery | Type | Li-Ion 3600 mAh, non-removable |
| Charging | 18W wired, 50% in 32 min | |
| Talk time | Up to 27 h 30 min (3G) | |
| Misc | Colors | Moonlight white, Pure Black |
| Models | Z01GD, Z01GS | |
| Price | About 350 EUR |
Mini Review & Verdict
A smart summary of the Asus Zenfone 4 Pro ZS551KL
Advantages
- Luminous AMOLED panel engineered for vivid color accuracy and outdoor readability
- Dependable daily multitasking and gaming stability powered by Qualcomm MSM8998 Snapdragon 835 (10 nm)
- Dedicated telephoto optical zoom lens for crisp distant portrait and telephoto captures
- Convenient 3.5mm analog headphone port for zero-latency wired audio
Disadvantages
- Network capability is capped at 4G LTE speeds without native 5G bands
Taking a comprehensive view of its technical merits, the Asus Zenfone 4 Pro ZS551KL demonstrates a thoughtful balance of hardware capabilities and refined design within Asus's catalog. Visual duties are assumed by a competent AMOLED screen measuring 5.5 inches , delivering high-definition clarity, balanced color temperatures, and generous dynamic range for reading and streaming.
Processing throughput is sustained by the well-matched Qualcomm MSM8998 Snapdragon 835 (10 nm), offering dependable operational stability across varied software demands. Multitasking, web browsing, and multimedia applications execute with dependable rhythm and stable thermal dissipation. Photography needs are addressed with confidence by the primary optical setup—centered on a 12MP primary sensor with optical image stabilization (OIS) and dedicated optical zoom versatility—which maintains pleasing clarity, controlled noise thresholds, and reliable low-light composure.
Longevity is anchored by a 3600mAh battery unit, backed by standard charging speeds designed to comfortably see users through full days of unhindered mobile operation. In conclusion, the Asus Zenfone 4 Pro ZS551KL represents a sensible, thoroughly calibrated package that satisfies demanding real-world criteria across the board.
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