Where they actually differ
The most decisive specs, ranked by how much they matter — before the full spec table.
| Spec | ASUS - Zenfone 11 Ultra | OnePlus 12 |
|---|---|---|
| Wireless charging | 15 W | 50 W |
| Wired charging | 65 W | 100 W |
| RAM | 16 GB | 12 GB |
| Pixel density | 388 ppi | 510 ppi |
| Refresh rate | 144 Hz | 120 Hz |
| Weight | 224 g | 220 g |
Between the Zenfone 11 Ultra and OnePlus 12, the Zenfone 11 Ultra comes out ahead in ram / refresh rate, while the OnePlus 12 wins on wireless charging / wired charging. Overall, the Zenfone 11 Ultra scores 69.2 and the OnePlus 12 scores 68.2 on our Mars Score.
Which should you buy?
These two are nearly even on the Mars Score (69.2 vs 68.2). The decision is not about overall quality — both clear the bar — it is about which specific trade-offs fit your use.
Pick the Zenfone 11 Ultra if your top frustration with your current device is running out of charge before the day ends — endurance is the lead spec here. The biggest gaps in its favor are ram, refresh rate, battery capacity, among others. The single most decisive one: RAM — 33.33% more. 16 GB vs 12 GB.
Pick the OnePlus 12 if the display is what you stare at all day — refresh rate, brightness, or sharpness is where the difference will be most visible. Its strongest claims are wireless charging, wired charging, pixel density, among others. The single most decisive one: Wireless charging — 233.33% more. 50 W vs 15 W.
Both ship with comparable main camera, 5g support, front camera, so those specs do not separate the two — focus on the differences below.
Bottom line: there is no wrong answer here — match the spec advantages to how you actually use the product. The Mars Score parity says both are well-rounded; the differences are about trade-offs, not quality.
Which should you buy: ASUS - Zenfone 11 Ultra or OnePlus 12?
ASUS - Zenfone 11 Ultra leads the current Mars Score by 1.0 points.The more useful decision is the trade-off behind that result: compare screen size, ram, pixel density, battery capacity against the way you will actually use the product.
Choose ASUS - Zenfone 11 Ultra if…
ASUS - Zenfone 11 Ultra has the measurable edge on ram gb, refresh rate hz, battery capacity mah.
Choose OnePlus 12 if…
OnePlus 12 has the measurable edge on wireless charging w, wired charging w, pixel density ppi.
This is a structured comparison of the published catalog values. It is not a claim of identical real-world performance across every workload; use the linked spec drill-downs and methodology page to inspect the inputs.
Why ASUS - Zenfone 11 Ultra wins
- ▲RAM — 33.33% more. 16 GB vs 12 GB.
- ▲Refresh rate — 20.00% more. 144 Hz vs 120 Hz.
- ▲Battery capacity — 1.85% more. 5500 mAh vs 5400 mAh.
- ▲Water resistance: IP68 (vs IP65).
- ▲AnTuTu — 0.49% more. 2070000 vs 2060000.
Why OnePlus 12 wins
- ▲Wireless charging — 233.33% more. 50 W vs 15 W.
- ▲Wired charging — 53.85% more. 100 W vs 65 W.
- ▲Pixel density — 31.44% more. 510 ppi vs 388 ppi.
- ▲Weight — 4.00 g less. 220 vs 224.
- ▲Screen size — 0.59% more. 6.82 " vs 6.78 ".
- ▲Promised OS updates: 4 (vs 2).
Spec comparison
Design
| Spec | ASUS - Zenfone 11 Ultra | OnePlus 12 |
|---|---|---|
| Weight | 224 g | 220 glead |
| Thickness | 8.9 mmlead | 9.15 mm |
| Water resistanceⓘ | IP68lead | IP65 |
| Form factor | bar | bar |
Display
| Spec | ASUS - Zenfone 11 Ultra | OnePlus 12 |
|---|---|---|
| Screen size | 6.78 " | 6.82 "lead |
| Pixel densityⓘ | 388 ppi | 510 ppilead |
| Refresh rateⓘ | 144 Hzlead | 120 Hz |
| Peak brightnessⓘ | 2500 nits | 4500 nitslead |
Performance
| Spec | ASUS - Zenfone 11 Ultra | OnePlus 12 |
|---|---|---|
| RAMⓘ | 16 GBlead | 12 GB |
| Storageⓘ | 512 GBlead | 256 GB |
| AnTuTuⓘ | 2070000lead | 2060000 |
| CPU total clockⓘ | 21.4 GHzlead | 21.0 GHz |
Cameras
| Spec | ASUS - Zenfone 11 Ultra | OnePlus 12 |
|---|---|---|
| Main cameraⓘ | 50 MP | 50 MP |
| Front camera | 32 MP | 32 MP |
| Optical image stabilizationⓘ | true | true |
Battery
| Spec | ASUS - Zenfone 11 Ultra | OnePlus 12 |
|---|---|---|
| Battery capacityⓘ | 5500 mAhlead | 5400 mAh |
| Wired chargingⓘ | 65 W | 100 Wlead |
| Wireless chargingⓘ | 15 W | 50 Wlead |
Connectivity
| Spec | ASUS - Zenfone 11 Ultra | OnePlus 12 |
|---|---|---|
| 5G supportⓘ | true | true |
| Headphone jack | false | false |
| microSD slot | false | false |
Operating System
| Spec | ASUS - Zenfone 11 Ultra | OnePlus 12 |
|---|---|---|
| OS | Android | Android |
| Promised OS updates | 2 years | 4 yearslead |
Frequently asked
Which has better battery, Zenfone 11 Ultra or OnePlus 12?+
Zenfone 11 Ultra has 1.9% more battery — 5500 mAh vs 5400 mAh.
Which is lighter, Zenfone 11 Ultra or OnePlus 12?+
OnePlus 12 is 4g lighter — 224g vs 220g.
Is Zenfone 11 Ultra waterproof?+
Zenfone 11 Ultra has an IP68 rating.
Does OnePlus 12 support 5G?+
Yes, OnePlus 12 supports 5G.
Which has more RAM, Zenfone 11 Ultra or OnePlus 12?+
Zenfone 11 Ultra offers 16GB of RAM.
Which has a better camera, Zenfone 11 Ultra or OnePlus 12?+
OnePlus 12 has a 50 MP main camera vs 50 MP.