Head to head

OnePlus 12 vs Xiaomi 14 Ultra

Xiaomi 14 Ultra leads 5 to 4 on the 9 rankable specs, but OnePlus 12 costs $600 less.

Catalog as of September 1, 2026

Why, in numbers

Weight: OnePlus 12 lists 220 g (OnePlus sheet, 2026-09-02); Xiaomi 14 Ultra lists 219.8 g (Xiaomi sheet, 2026-09-02).
Size: OnePlus 12 lists 6.82 inches (OnePlus sheet, 2026-09-02); Xiaomi 14 Ultra lists 6.73 inches (Xiaomi sheet, 2026-09-02).
Max optical zoom: OnePlus 12 lists 3x optical (6x in-sensor zoom / 120x digital) (OnePlus sheet, 2026-09-02); Xiaomi 14 Ultra lists 5x optical (up to 120x digital) (Xiaomi sheet, 2026-09-02).
Capacity: OnePlus 12 lists 5,400 mAh (dual-cell) (OnePlus sheet, 2026-09-02); Xiaomi 14 Ultra lists 5,000 mAh (5,300 mAh CN model) (Xiaomi sheet, 2026-09-02).
Dimensions: OnePlus 12 lists 164.3 × 75.8 × 9.15 mm (OnePlus sheet, 2026-09-02); Xiaomi 14 Ultra lists 161.4 × 75.3 × 9.2 mm (Xiaomi sheet, 2026-09-02).

Manufacturer list price, not a live offer. Confirm current pricing before you buy.

Buying for

Every rankable spec counts once. Pick a lens to score only what matters for your phone.

Your devices

Select your ecosystem to flag non-functional features or platform lock-in.

Straight answer

Overall: 4 to 5

Buy the Xiaomi 14 Ultra.

Leads 5 of 9 rankable overall specs; OnePlus 12 takes 4.
Weight: 219.8 g vs 220 g
Max optical zoom: 5x optical vs 3x optical
OnePlus 12 is $600 cheaper. Pay the difference only if weight matters to you.

4 OnePlus 129 rankable of 48 specsXiaomi 14 Ultra 5

Deal-breakers

tick what would make you walk away

No stylusrow
No pen input for handwritten notes or markup.
Trips:OnePlus 12 · NoTrips:Xiaomi 14 Ultra · No
No headphone jackrow
Wired headphones need a USB-C dongle.
Trips:OnePlus 12 · NoTrips:Xiaomi 14 Ultra · No
Under 5 years of OS updatesrow
Security patches stop sooner and resale value falls faster.
Trips:OnePlus 12 · 4 major Android OS updates + 5 years se…Trips:Xiaomi 14 Ultra · 4 major Android OS updates + 5 years se…
Not IP68row
Less dust and water protection than an IP68 rival.
Trips:OnePlus 12 · IP65 (water resistant splash/spray)Clear:Xiaomi 14 Ultra · IP68 (1.5 m / 30 min)
No microSD slotrow
Storage is fixed at what you buy.
Trips:OnePlus 12 · NoTrips:Xiaomi 14 Ultra · No

At a glance

The handful of numbers that decide most purchases in this category.

4 of 6 differ

Weight

OnePlus

220 g

Xiaomi

219.8 g

Size

OnePlus

6.82 inches

Xiaomi

6.73 inches

Chipsetsame

OnePlus

Snapdragon 8 Gen 3 (4 nm)

Xiaomi

Snapdragon 8 Gen 3 (4 nm)

RAMsame

OnePlus

16 GB LPDDR5X

Xiaomi

16 GB LPDDR5X

Max optical zoom

OnePlus

3x optical (6x in-sensor zoom / 120x digital)

Xiaomi

5x optical (up to 120x digital)

Capacity

OnePlus

5,400 mAh (dual-cell)

Xiaomi

5,000 mAh (5,300 mAh CN model)

The 90-Day Owner Regret Check

Documented ergonomic quirks, hardware annoyances, and maintenance realities reported by real owners.

Post-Purchase Truths

OnePlus: What to watch for

Hidden Cost
No wall charging adapter included in the retail box.
Packaging contains only a Type-C cable; high-speed wall charging bricks must be purchased separately if you do not already own one.

Xiaomi: What to watch for

Hidden Cost
No wall charging adapter included in the retail box.
Packaging contains only a Type-C cable; high-speed wall charging bricks must be purchased separately if you do not already own one.

OnePlus 12$7994 wins

Xiaomi 14 Ultra$1,3995 wins

Body Display Platform Memory Rear camera Front camera Battery & charging Audio Connectivity Features

33 of 48 attributes differ. Identical rows are dimmed.

Body

leads 1-0

Body specifications. Middle column is OnePlus 12, right column is Xiaomi 14 Ultra.
Dimensions	164.3 × 75.8 × 9.15 mm	161.4 × 75.3 × 9.2 mm
Weight	220 g	219.8 g (wins this row: lower)
Build	Corning Gorilla Glass Victus 2 front, glass back, aluminum frame	Xiaomi Shield Glass front, vegan leather back, aluminum frame
Water / dust rating	IP65 (water resistant splash/spray)	IP68 (1.5 m / 30 min)
Colors	Silky Black, Flowy Emerald	Black, White
Stylus	No	No

Display

leads 2-1

Display specifications. Middle column is OnePlus 12, right column is Xiaomi 14 Ultra.
Type	ProXDR LTPO AMOLED with Aqua Touch	LTPO AMOLED, 68B colors
Size	6.82 inches (wins this row: higher)	6.73 inches
Resolution	1440 × 3168 (2K)	1440 × 3200 (WQHD+)
Pixel density	~510 ppi	~522 ppi (wins this row: higher)
Refresh rate	1–120 Hz dynamic	1–120 Hz dynamic
Peak brightness	4,500 nits peak / 1,600 nits HBM (wins this row: higher)	3,000 nits peak
HDR	Dolby Vision, HDR10+, HDR10, HLG	Dolby Vision, HDR10+, HLG
Protection	Corning Gorilla Glass Victus 2	Xiaomi Shield Glass
Always-on display	Yes	Yes

Platform

1 differences

Platform specifications. Middle column is OnePlus 12, right column is Xiaomi 14 Ultra.
Operating system	OxygenOS 14 based on Android 14	HyperOS based on Android 14
Software support	4 major Android OS updates + 5 years security	4 major Android OS updates + 5 years security
Chipset	Snapdragon 8 Gen 3 (4 nm)	Snapdragon 8 Gen 3 (4 nm)
CPU	8-core (1× Cortex-X4 + 5× A720 + 2× A520)	8-core (1× Cortex-X4 + 5× A720 + 2× A520)
GPU	Adreno 750	Adreno 750

Memory

1 differences

Memory specifications. Middle column is OnePlus 12, right column is Xiaomi 14 Ultra.
RAM	16 GB LPDDR5X	16 GB LPDDR5X
Storage	512 GB UFS 4.0	512 GB UFS 4.0
Storage options	256 GB / 512 GB	512 GB / 1 TB
microSD	No	No

Rear camera

leads 2-1

Rear camera specifications. Middle column is OnePlus 12, right column is Xiaomi 14 Ultra.
Main	50 MP Sony LYT-808, f/1.6, 23 mm, 1/1.4", OIS	50 MP 1-inch Sony LYT-900, f/1.63–f/4.0 variable aperture, 23 mm, OIS
Ultrawide	48 MP Sony IMX581, f/2.2, 14 mm, 114° FOV	50 MP Leica, f/1.8, 12 mm, 122° FOV (wins this row: higher)
Telephoto	64 MP OmniVision OV64B periscope, f/2.6, 70 mm, 3x optical, OIS (wins this row: higher)	50 MP 3.2x optical (75 mm, f/1.8, OIS) + 50 MP 5x periscope (120 mm, f/2.5, OIS)
Max optical zoom	3x optical (6x in-sensor zoom / 120x digital)	5x optical (up to 120x digital) (wins this row: higher)
Stabilization	OIS on main and periscope telephoto	OIS on main and both telephoto cameras
Video	8K 24 fps, 4K 30/60 fps Dolby Vision HDR	8K 24/30 fps, 4K 24/30/60/120 fps, 10-bit Log, Dolby Vision

Front camera

2 differences

Front camera specifications. Middle column is OnePlus 12, right column is Xiaomi 14 Ultra.
Selfie camera	32 MP Sony IMX615, f/2.4	32 MP, f/2.0, 22 mm
Selfie video	4K 30 fps	4K 60 fps

Battery & charging

4 differences

Battery & charging specifications. Middle column is OnePlus 12, right column is Xiaomi 14 Ultra.
Capacity	5,400 mAh (dual-cell) (wins this row: higher)	5,000 mAh (5,300 mAh CN model)
Wired chargingNot on the official sheet	80 W SUPERVOOC (100W international)	90 W HyperCharge (100% in ~33 min) (wins this row: higher)
Wireless charging	50 W AIRVOOC wireless	80 W wireless HyperCharge (100% in ~46 min)
Reverse wireless	10 W reverse wireless	10 W reverse wireless
Charger in box	Yes (80W SUPERVOOC adapter included)	Yes (90W adapter in box)

Audio

1 differences

Audio specifications. Middle column is OnePlus 12, right column is Xiaomi 14 Ultra.
Speakers	Dual stereo speakers with Dolby Atmos	Stereo speakers with Dolby Atmos and Hi-Res Audio
Headphone jack	No	No

Connectivity

3 differences

Connectivity specifications. Middle column is OnePlus 12, right column is Xiaomi 14 Ultra.
Cellular	5G (sub-6 + mmWave)	5G (sub-6)
Wi-Fi	Wi-Fi 7	Wi-Fi 7
Bluetooth	Bluetooth 5.4	Bluetooth 5.4
NFC	Yes	Yes
USB	USB-C 3.2 Gen 1	USB-C 3.2 Gen 2 (10 Gbps)
SIM	Dual SIM (nano-SIM + eSIM)	Dual nano-SIM

Features

3 differences

Features specifications. Middle column is OnePlus 12, right column is Xiaomi 14 Ultra.
Biometrics	Ultra-fast optical in-display fingerprint + face unlock	Optical in-display fingerprint + AI Face Unlock
Extra controls	3-position Alert Slider, IR blaster	Optional Leica Photography Kit with physical shutter button
Standout features	Aqua Touch wet-finger technology, Hasselblad Color Calibration, Trinity Engine	Leica Summilux lenses, 1-inch sensor, Stepless variable aperture

Most rows are from the official spec sheet. Marked rows are other published figures or our summary, not lab tests we ran.

OnePlus 12 source Xiaomi 14 Ultra source

Which one should you buy

Pick this one if

OnePlus 12

Value flagship with Snapdragon 8 Gen 3, 5400mAh battery, 80W wired charging, and 4th Gen Hasselblad camera.

Incredible value with top-tier Snapdragon 8 Gen 3 performance
Super-fast 80W wired and 50W wireless charging with charger in box
Massive 5,400 mAh battery capacity

What you give up

IP65 rating is lower than IP68 competitors
Curved display glass is more prone to accidental touches

Full OnePlus 12 specs →

Pick this one if

Xiaomi 14 Ultra

Grey import in the US; official in other regions. Photography juggernaut with 1-inch LYT-900 sensor, stepless variable aperture, and quad Leica camera array.

Quad 50MP Leica cameras with 1-inch stepless variable aperture
Exceptional manual photography and 8K log video controls
Bright C8 AMOLED display with 90W fast charging

What you give up

Bulky camera bump affects flat tabletop resting
HyperOS software has more bloatware than stock Android

Full Xiaomi 14 Ultra specs →

Best for each use

Photos

Camera first: zoom reach, sensors, stabilisation and video

For photos, buy the Xiaomi 14 Ultra.

Leads 2 of 3 rankable photos specs; OnePlus 12 takes 1.
Max optical zoom: 5x optical vs 3x optical
Ultrawide: 50 MP Leica, f/1.8, 12 mm, 122° FOV vs 48 MP Sony IMX581, f/2.2, 14 mm, 114° FOV
OnePlus 12 is $600 cheaper. Pay the difference only if max optical zoom matters to you.

Battery & updates

All-day battery, fast top-ups and years of software support

Tied on battery & updates. OnePlus 12 is cheaper.

The 2 rankable battery & updates specs split 1 to 1.
Saves $600 at list price.

Games & video

Games and streaming: chip, refresh rate, brightness, speakers

For games & video, buy the OnePlus 12.

Leads 2 of 2 rankable games & video specs.
Size: 6.82 inches vs 6.73 inches
Peak brightness: 4,500 nits peak / 1,600 nits HBM vs 3,000 nits peak
It is also $600 cheaper.

Every answer above is scored from published figures. A lens uses only the rows that matter for that use, including marked rows that are not on the official sheet. Switch lenses interactively in the panel above.

Done deciding?

Open the full standalone spec sheet for either device.

OnePlus 12 spec sheet Xiaomi 14 Ultra spec sheet

Manufacturer pages: OnePlus 12 ↗ · Xiaomi 14 Ultra ↗

Common questions

Which is cheaper, the OnePlus 12 or the Xiaomi 14 Ultra?

OnePlus 12 costs $600 less at list price.

What is the biggest catch with the OnePlus 12 or Xiaomi 14 Ultra?

Both has this deal-breaker: no stylus. No pen input for handwritten notes or markup.

Which is better for photos, the OnePlus 12 or the Xiaomi 14 Ultra?

For photos, buy the Xiaomi 14 Ultra. Leads 2 of 3 rankable photos specs; OnePlus 12 takes 1. Max optical zoom: 5x optical vs 3x optical

What cannot be compared from spec sheets?

Of the 48 specs tracked here, 39 are descriptive and cannot be ranked on numbers alone. Spec sheets also cannot measure subjective factors like build quality, real-world performance, or comfort.

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