Asus Zenfone 9
How long will it last?
Official promiseSupported until September 2025 · Buy-by September 2023
Asus promises 3 years of updates for this phone, so it's supported until September 2025 — buying it today still gets you about -0.7 years of safe use.
Source: Asus's official policy · last verified 2026-06-12 · how we compute this
Our verdict
A rare true compact flagship with a 5.9-inch screen, gimbal camera, IP68 and a headphone jack — but support has now ended.
Pros
- Genuinely compact 5.9-inch body that fits one hand
- IP68 rating and a 3.5mm headphone jack
- 50MP gimbal-stabilized main camera
Cons
- Update support has ended (only 2 OS upgrades to 2025)
- Smaller 4300mAh battery and 30W charging
Full specifications
Display
💡 Bigger numbers = smoother scrolling (Hz) and easier outdoor reading (nits).
| Screen | 5.9-inch AMOLED, 1080x2400, 120Hz |
Performance
💡 The phone's brain — it decides speed today and how well it ages.
| Chipset | Qualcomm Snapdragon 8+ Gen 1 |
| RAM | 8GB / 16GB |
| Storage | 128GB / 256GB |
Cameras
💡 Megapixels aren't everything — lens variety matters more day-to-day.
| main | 50MP |
| ultra-wide | 12MP |
| front | 12MP |
Battery & charging
💡 Capacity in mAh — bigger usually means longer between charges.
| Battery | 4,300 mAh |
| Charging | 30W wired |
Build
💡 Size, weight, and the materials between your phone and the floor.
| Dimensions | 146.5 × 68.1 × 9.1 mm |
| Weight | 169 g |
| Materials | Plastic frame with polymer/soft-touch back |
| Water resistance | IP68 |
Software & connectivity
💡 The software it ships with, and how far it can upgrade.
| Software | Android 12 with ZenUI at launch |
| Connectivity | 5G, Wi-Fi 6E, Bluetooth, USB-C, NFC, 3.5mm jack |
| Update policy | 2 OS upgrades · 3 years of security updates (official promise) |
Better-value alternatives
Similar price, lower cost per month of safe ownership.
Frequently asked questions
How long will the Asus Zenfone 9 get updates?
Asus committed to 2 major Android OS upgrades (to Android 14) and security updates through 2025, so the Zenfone 9 has now reached the end of official support.
Is the Zenfone 9 a small phone?
Yes, its 5.9-inch screen and 169g weight make it one of the last true compact Android flagships, easy to use one-handed.
Does the Zenfone 9 have a headphone jack and waterproofing?
Yes, it offers both a 3.5mm headphone jack and an IP68 dust/water resistance rating, an unusual combination at its size.
Compare it
Specs are collected from manufacturer documentation; prices reflect major US retailers and change often. Support end dates follow each brand's official policy (or, for Apple, its documented historical pattern). Last verified 2026-06-12.