Asus Zenfone 2 (ZE551ML) vs OnePlus One
A spec-by-spec comparison of the Asus Zenfone 2 (ZE551ML) and the OnePlus One, taken from their full specification sheets. Green marks the better value in each measured row.
Head to head
| Asus Zenfone 2 (ZE551ML) | OnePlus One |
|---|
| Price | $69 | $79 |
| Our rating | 7/10 | 8/10 |
| Battery | 3,000 mAh | 3,100 mAh |
| Wired charging | 18W | — |
| RAM (max) | 4 GB | 3 GB |
| Storage (max) | 128 GB | 64 GB |
| Screen size | 5.5 in | 5.5 in |
| Main camera | 13 MP | 13 MP |
| Weight (lower is lighter) | 170 g | 162 g |
| Released | Mar 2015 | Jun 2014 |
Summary: Asus Zenfone 2 (ZE551ML) is ahead on ram (max), storage (max). OnePlus One is ahead on our rating, battery, weight (lower is lighter).
★ Which should you buy? OnePlus One is the stronger overall pick on the measured specs. If budget matters more than the extra capability, Asus Zenfone 2 (ZE551ML) is the cheaper option.
Reviewed by the infozme.com Editorial Team — see how we research & rate phones.
Display
| Asus Zenfone 2 (ZE551ML) | OnePlus One |
|---|
| Type | IPS LCD | LTPS IPS LCD |
| Size | 5.5 inches, 83.4 cm2 (~70.8% screen-to-body ratio) | 5.5 inches |
| Resolution | 1080 x 1920 pixels, 16:9 ratio (~403 ppi density) | 1080 x 1920 pixels |
| Protection | Corning Gorilla Glass 3 | Corning Gorilla Glass 3 |
| Features | — | 401 ppi density |
Platform
| Asus Zenfone 2 (ZE551ML) | OnePlus One |
|---|
| OS | Android 5.0 (Lollipop), upgradable to 6.0 (Marshmallow) | Android 4.4.2 (KitKat), upgradable to 6.0.1 (Marshmallow) (Cyanogen OS 13.1) |
| Chipset | Intel Atom Z3580 (2.3 GHz) or Intel Atom Z3560 (1.8 GHz) | Qualcomm MSM8974AC Snapdragon 801 (28 nm) |
| CPU | Quad-core (2.3 GHz or 1.8 GHz) | Quad-core 2.5 GHz Krait 400 |
| GPU | PowerVR G6430 | Adreno 330 |
Memory
| Asus Zenfone 2 (ZE551ML) | OnePlus One |
|---|
| Card slot | microSDXC (dedicated slot), up to 64GB | No |
| Internal | 16GB 2GB RAM, 32GB 2GB RAM, 32GB 4GB RAM, 64GB 4GB RAM, 128GB 4GB RAM | 16GB 3GB RAM, 64GB 3GB RAM |
Main Camera
| Asus Zenfone 2 (ZE551ML) | OnePlus One |
|---|
| Single | 13 MP, f/2.0, autofocus, dual-LED (dual tone) flash | — |
| Features | PixelMaster camera, Low Light mode, Backlight (Super HDR) mode, Super Resolution mode | Dual-LED flash, panorama, HDR |
| Video | 1080p@30fps | 2160p@24fps, 2160p@30fps, 1080p@30/60fps, 720p@120fps |
| Modules | — | 13 MP, f/2.0, 1/3.06", AF (Sony Exmor IMX214 sensor) |
Selfie Camera
| Asus Zenfone 2 (ZE551ML) | OnePlus One |
|---|
| Single | 5 MP, f/2.0 | — |
| Features | PixelMaster | — |
| Modules | — | 5 MP, f/2.0 |
| Video | — | 1080p@30fps |
Battery
| Asus Zenfone 2 (ZE551ML) | OnePlus One |
|---|
| Type | Li-Po 3000 mAh, non-removable | Li-Po 3100 mAh, non-removable |
| Charging | 18W wired, 60% in 39 min (advertised) | — |
Body
| Asus Zenfone 2 (ZE551ML) | OnePlus One |
|---|
| Dimensions | 152.5 x 77.2 x 10.9 mm (6.00 x 3.04 x 0.43 in) | 152.9 x 75.9 x 8.9 mm (6.02 x 2.99 x 0.35 in) |
| Weight | 170 g (6.00 oz) | 162 g (5.71 oz) |
| Build | Glass front (Gorilla Glass 3), plastic back, plastic frame | Glass front (Gorilla Glass 3), plastic back, plastic frame |
| SIM | Dual SIM (Micro-SIM, dual stand-by) | Micro-SIM |
Comms
| Asus Zenfone 2 (ZE551ML) | OnePlus One |
|---|
| WLAN | Wi-Fi 802.11 a/b/g/n/ac, Wi-Fi Direct, hotspot | Wi-Fi 802.11 a/b/g/n/ac, dual-band, Wi-Fi Direct, DLNA, hotspot |
| Bluetooth | 4.0, A2DP, EDR | 4.1, A2DP |
| Positioning | GPS, GLONASS, BDS | GPS, GLONASS |
| NFC | Yes | Yes |
| Radio | FM radio | No |
| USB | microUSB 2.0, OTG | microUSB 2.0, OTG |
Launch
| Asus Zenfone 2 (ZE551ML) | OnePlus One |
|---|
| Announced | January 2015 | 2014, April 23 |
| Status | Discontinued | Released 2014, June |
Frequently asked questions
Which has the better battery, Asus Zenfone 2 (ZE551ML) or OnePlus One?
OnePlus One — 3,000 mAh for the Asus Zenfone 2 (ZE551ML) versus 3,100 mAh for the OnePlus One.
Which has more RAM, Asus Zenfone 2 (ZE551ML) or OnePlus One?
Asus Zenfone 2 (ZE551ML) — 4 GB for the Asus Zenfone 2 (ZE551ML) versus 3 GB for the OnePlus One.
Which is lighter, Asus Zenfone 2 (ZE551ML) or OnePlus One?
OnePlus One — 170 g for the Asus Zenfone 2 (ZE551ML) versus 162 g for the OnePlus One.
Which is newer, Asus Zenfone 2 (ZE551ML) or OnePlus One?
Asus Zenfone 2 (ZE551ML) — Mar 2015 for the Asus Zenfone 2 (ZE551ML) versus Jun 2014 for the OnePlus One.
Is the Asus Zenfone 2 (ZE551ML) or the OnePlus One rated higher?
We rate the Asus Zenfone 2 (ZE551ML) 7/10 and the OnePlus One 8/10.
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