Asus ZenFone 5Z (ZS620KL) vs Samsung Galaxy S9
A spec-by-spec comparison of the Asus ZenFone 5Z (ZS620KL) and the Samsung Galaxy S9, taken from their full specification sheets. Green marks the better value in each measured row.
Head to head
| Asus ZenFone 5Z (ZS620KL) | Samsung Galaxy S9 |
|---|
| Our rating | 8/10 | 7/10 |
| Battery | 3,300 mAh | 3,000 mAh |
| Wired charging | 18W | 15W |
| RAM (max) | 8 GB | 4 GB |
| Storage (max) | 256 GB | 400 GB |
| Screen size | 6.2 in | 5.8 in |
| Main camera | 12 MP | 12 MP |
| Weight (lower is lighter) | 165 g | 163 g |
| Released | Jun 2018 | Mar 2018 |
Summary: Asus ZenFone 5Z (ZS620KL) is ahead on our rating, battery, wired charging, ram (max). Samsung Galaxy S9 is ahead on storage (max), weight (lower is lighter).
★ Which should you buy? Asus ZenFone 5Z (ZS620KL) is the stronger overall pick on the measured specs.
Researched with AI assistance by infozme.com from manufacturer and retailer sources — see how we research & rate phones.
Display
| Asus ZenFone 5Z (ZS620KL) | Samsung Galaxy S9 |
|---|
| Type | Super IPS+ LCD, 90% screen-to-body ratio, DCI-P3, 550 nits brightness | Super AMOLED, HDR10 |
| Size | 6.2 inches | 5.8 inches, 84.2 cm² (~83.6% screen-to-body ratio) |
| Resolution | 1080 x 2246 pixels, 19:9 ratio (~402 ppi density) | 1440 x 2960 pixels, 18.5:9 ratio (~570 ppi density) |
| Protection | Corning Gorilla Glass | Corning Gorilla Glass 5 |
Platform
| Asus ZenFone 5Z (ZS620KL) | Samsung Galaxy S9 |
|---|
| OS | Android 8.0 (Oreo), upgradable to Android 10, ZenUI 5 | Android 8.0 (Oreo), upgradable to Android 10, One UI 2.5 |
| Chipset | Qualcomm Snapdragon 845 (10 nm) | Exynos 9810 (10 nm) - EMEA or Qualcomm MSM8998 Snapdragon 845 (10 nm) - USA/LATAM, China |
| CPU | Octa-core (4x2.8 GHz Kryo 385 Gold & 4x1.7 GHz Kryo 385 Silver) | Octa-core (4x2.7 GHz Mongoose M3 & 4x1.7 GHz Cortex-A55) - EMEA or Octa-core (4x2.8 GHz Kryo 385 Gold & 4x1.7 GHz Kryo 385 Silver) - USA/LATAM, China |
| GPU | Adreno 630 | Mali-G72 MP18 - EMEA or Adreno 630 - USA/LATAM, China |
Memory
| Asus ZenFone 5Z (ZS620KL) | Samsung Galaxy S9 |
|---|
| Card slot | microSDXC (uses shared SIM slot, up to 2TB) | microSDXC (uses shared SIM slot) - dual SIM model only or dedicated slot - single SIM model, up to 400 GB |
| Internal | 64GB 4GB RAM, 64GB 6GB RAM, 128GB 6GB RAM, 128GB 8GB RAM, 256GB 8GB RAM (UFS 2.1) | 64GB 4GB RAM, 128GB 4GB RAM, 256GB 4GB RAM |
Main Camera
| Asus ZenFone 5Z (ZS620KL) | Samsung Galaxy S9 |
|---|
| Dual | 12 MP, f/1.8, 24mm (wide), 1/2.55", 1.4µm, Dual Pixel PDAF, 4-axis OIS (Sony IMX363 sensor) + 8 MP, f/2.0, 12mm (ultrawide), 1/4", 1.12µm | — |
| Features | Dual-LED dual-tone flash, HDR, panorama, AI Scene Detection, AI Photo Learning, Real-time Portrait, Real-time Beautification | LED flash, auto-HDR, panorama |
| Video | 4K@30/60fps, 1080p@30/60fps, EIS (gyro), OIS | 4K@30/60fps, 1080p@30/60/240fps, 720p@960fps, HDR, stereo sound rec., gyro-EIS, OIS |
| Single | — | 12 MP, f/1.5-2.4, 26mm (wide), 1/2.55", 1.4µm, Dual Pixel PDAF, OIS |
Selfie Camera
| Asus ZenFone 5Z (ZS620KL) | Samsung Galaxy S9 |
|---|
| Single | 8 MP, f/2.0, 24mm (wide), 1/4", 1.12µm | — |
| Features | HDR, EIS | Dual video call, Auto-HDR |
| Video | 1080p@30fps | 1440p@30fps |
| Dual | — | 8 MP, f/1.7, 25mm (wide), 1/3.6", 1.22µm, AF; 2 MP (dedicated iris scanner camera) |
Battery
| Asus ZenFone 5Z (ZS620KL) | Samsung Galaxy S9 |
|---|
| Type | Li-Po 3300 mAh, non-removable | Li-Ion 3000 mAh, non-removable |
| Charging | 18W wired, QC3.0 | 15W wired, QC2.0; Qi/PMA wireless charging |
Body
| Asus ZenFone 5Z (ZS620KL) | Samsung Galaxy S9 |
|---|
| Dimensions | 153 x 75.7 x 7.7 mm | 147.7 x 68.7 x 8.5 mm (5.81 x 2.70 x 0.33 in) |
| Weight | 165 g | 163 g (5.75 oz) |
| Build | Glass front (Corning Gorilla Glass), glass back, aluminum frame | Glass front (Gorilla Glass 5), glass back (Gorilla Glass 5), aluminum frame |
| SIM | Hybrid Dual SIM (Nano-SIM, dual stand-by) | Single SIM (Nano-SIM) or Hybrid Dual SIM (Nano-SIM, dual stand-by) |
| Water & Dust Resistance | — | IP68 dust/water resistant (up to 1.5m for 30 min) |
Comms
| Asus ZenFone 5Z (ZS620KL) | Samsung Galaxy S9 |
|---|
| WLAN | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot, 2x2 MIMO | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, hotspot |
| Bluetooth | 5.0, A2DP, LE, aptX HD | 5.0, A2DP, LE, aptX |
| Positioning | GPS, GLONASS, BDS, GALILEO, QZSS (A-GPS) | GPS, GLONASS, BDS, GALILEO |
| NFC | Yes | Yes |
| Radio | FM radio | No |
| USB | USB Type-C 2.0, USB On-The-Go | USB Type-C 3.1 |
Launch
| Asus ZenFone 5Z (ZS620KL) | Samsung Galaxy S9 |
|---|
| Announced | February 2018 (MWC 2018) | February 25, 2018 |
| Status | Available. Released June 2018 (global), August 2018 (US) | Available. Released March 16, 2018. |
Frequently asked questions
Which has the better battery, Asus ZenFone 5Z (ZS620KL) or Samsung Galaxy S9?
Asus ZenFone 5Z (ZS620KL) — 3,300 mAh for the Asus ZenFone 5Z (ZS620KL) versus 3,000 mAh for the Samsung Galaxy S9.
Which has more RAM, Asus ZenFone 5Z (ZS620KL) or Samsung Galaxy S9?
Asus ZenFone 5Z (ZS620KL) — 8 GB for the Asus ZenFone 5Z (ZS620KL) versus 4 GB for the Samsung Galaxy S9.
Which is lighter, Asus ZenFone 5Z (ZS620KL) or Samsung Galaxy S9?
Samsung Galaxy S9 — 165 g for the Asus ZenFone 5Z (ZS620KL) versus 163 g for the Samsung Galaxy S9.
Which is newer, Asus ZenFone 5Z (ZS620KL) or Samsung Galaxy S9?
Asus ZenFone 5Z (ZS620KL) — Jun 2018 for the Asus ZenFone 5Z (ZS620KL) versus Mar 2018 for the Samsung Galaxy S9.
Is the Asus ZenFone 5Z (ZS620KL) or the Samsung Galaxy S9 rated higher?
We rate the Asus ZenFone 5Z (ZS620KL) 8/10 and the Samsung Galaxy S9 7/10.
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