OnePlus 12 vs Xiaomi 15

The short answer

OnePlus 12 has the bigger battery: 5,400 mAh against 5,240.
OnePlus 12 charges faster, at 100 W against 90.

Compared only on figures both makers publish. Everything else is in the table below.

2 phones side by side. Show only differences

Specification	OnePlus 12 ₹64,999launch price · Jan 2024	Xiaomi 15 ₹64,999launch price · Mar 2025
Placement
At its price	Top quarter ₹50–70k	Top quarter ₹50–70k
Spec index	9.1 / 10	9.0 / 10
Key Specs
RAM	12 GB / 16 GB	12 GB
Processor	Qualcomm Snapdragon 8 Gen 3	Qualcomm Snapdragon 8 Elite
Rear Camera	50 MP + 64 MP + 48 MP	50 MP + 50 MP + 50 MP
Front Camera	32 MP	32 MP
Battery	5400 mAh	5240 mAh
Display	6.82 inches (17.32 cm)	6.36 inches (16.15 cm)
General
Launch Date	January 30, 2024 (Official)	March 11, 2025 (Official)
Operating System	Android v14	Android v15
Custom UI	OxygenOS 14	Xiaomi HyperOS 2
Performance
Chipset	Qualcomm Snapdragon 8 Gen 3	Qualcomm Snapdragon 8 Elite
CPU	Octa core (3.3 GHz, Single core, Cortex X4 + 3.2 GHz, Tri core, Cortex A720 + 3 GHz, Dual core, Cortex A720 + 2.3 GHz, Dual core, Cortex A520)	Octa core (4.32 GHz, Dual core, Oryon Phoenix L + 3.53 GHz, Hexa Core, Oryon Phoenix M)
Architecture	64 bit	64 bit
Fabrication	4 nm	3 nm
Graphics	Adreno 750	Adreno 830
RAM	12 GB / 16 GB	12 GB
RAM Type	LPDDR5X	LPDDR5X
Display
Display Type	LTPO AMOLED (ProXDR)	LTPO AMOLED
Screen Size	6.82 inches (17.32 cm)	6.36 inches (16.15 cm)
Resolution	1440x3168 px (QHD+)	1200x2670 px (1.5K)
Aspect Ratio	19.8:9	20:9
Pixel Density	510 ppi	460 ppi
Screen to Body Ratio (calculated)	90.75 %	89.93 %
Screen Protection	Corning Gorilla Glass Victus 2	Xiaomi Shield Glass
Bezel-less display	Yes with punch-hole display	Yes with punch-hole display
Touch Screen	Yes, Capacitive Touchscreen, Multi-touch	Yes, Capacitive Touchscreen, Multi-touch
Brightness	4500 nits (peak)	3200 nits (peak)
HDR 10 / HDR+ support	Yes, HDR10+ and Dolby Vision	Yes, HDR10+ and Dolby Vision
Refresh Rate	120 Hz (LTPO, 1-120 Hz adaptive)	120 Hz (LTPO, 1-120 Hz adaptive)
Design
Height	164.3 mm	152.3 mm
Width	75.8 mm	71.2 mm
Thickness	9.2 mm	8.08 mm
Weight	220 grams	191 grams
Build Material	Frame: Aluminium alloy Back: Glass	Frame: Aluminium Back: Glass
Colours	Flowy Emerald, Silky Black	Black, White, Green
Waterproof	Yes, IP65	Yes, IP68
Main Camera
Camera Setup	Triple	Triple
Resolution	50 MP f/1.6, Wide Angle, Primary Camera (1/1.4" sensor size, OIS) 64 MP f/2.6, Telephoto Camera (3x Periscope Optical Zoom, OIS) 48 MP f/2.2, Ultra-Wide Angle Camera (114 degree field of view)	50 MP f/1.62, 23mm, Wide Angle, Primary Camera (1/1.31" Light Fusion 900 sensor, Hyper OIS) 50 MP f/2.2, 14mm, Ultra-Wide Angle Camera (115 degree field of view) 50 MP f/2.0, 60mm, Floating Telephoto Camera (2.6x Optical Zoom)
Sensor	Sony LYT-808 (primary), OmniVision OV64B (telephoto), Sony IMX581 (ultra-wide)	—
Autofocus	Yes	Yes
OIS	Yes	Yes
Flash	Yes, Dual LED Flash	Yes, LED Flash
Settings	Exposure compensation, ISO control	Exposure compensation, ISO control
Shooting Modes	Continuous Shooting High Dynamic Range mode (HDR) Night Mode Pro Mode	Continuous Shooting High Dynamic Range mode (HDR) Night Mode Leica Authentic and Leica Vibrant looks
Camera Features	3 x Optical Zoom 6 x In-sensor Zoom Auto Flash Face detection Touch to focus 4th Generation Hasselblad Camera for Mobile	Leica Summilux optics 2.6 x Optical Zoom 60 x Digital Zoom Auto Flash Face detection Touch to focus
Video Recording	7680x4320 @ 24 fps 3840x2160 @ 60 fps 1920x1080 @ 240 fps	7680x4320 @ 30 fps 3840x2160 @ 60 fps 1920x1080 @ 240 fps
Video Recording Features	Dolby Vision HDR recording Slo-motion Time-lapse	Slo-motion Dolby Vision HDR 10-bit LOG video
Front Camera
Camera Setup	Single	Single
Resolution	32 MP f/2.4, Wide Angle, Primary Camera (Sony IMX615 sensor)	32 MP f/2.0, Wide Angle, Primary Camera
Autofocus	No	No
Flash	No	No
Video Recording	3840x2160 @ 30 fps 1920x1080 @ 30 fps	3840x2160 @ 60 fps 1920x1080 @ 60 fps
Battery
Capacity	5400 mAh	5240 mAh
Type	Li-Po	Li-ion (Silicon-Carbon)
Removable	No	No
Wireless Charging	No	No
Quick Charging	Yes, Fast, 100W SUPERVOOC	Yes, Fast, 90W
USB Type-C	Yes	Yes
Storage
Internal Memory	256 GB / 512 GB	512 GB
Expandable Memory	No	No
USB OTG	Yes	Yes
Storage Type	UFS 4.0	UFS 4.0
Network & Connectivity
SIM Slot(s)	Dual SIM, GSM+GSM (Nano SIM + Nano SIM)	Dual SIM, GSM+GSM (Nano SIM + Nano SIM)
SIM Size	SIM1: Nano, SIM2: Nano	SIM1: Nano, SIM2: Nano
Network Support	5G Supported in India, 4G Supported in India, 3G, 2G	5G Supported in India, 4G Supported in India, 3G, 2G
VoLTE	Yes	Yes
SIM 1	-	-
EDGE	Available	Available
SIM 2	-	-
GPRS	Available	Available
Wi-Fi	Yes, Wi-Fi 7 (802.11 a/b/g/n/ac/ax/be), MIMO	Yes, Wi-Fi 7 (802.11 a/b/g/n/ac/ax/be), MIMO
Wi-Fi Features	Wi-Fi Direct, Mobile Hotspot	Wi-Fi Direct, Mobile Hotspot
Bluetooth	Yes, v5.4	Yes, v6.0
GPS	Yes with Glonass, Galileo, Beidou, QZSS, NavIC	Yes with A-GPS, Glonass, Galileo, Beidou, QZSS
NFC	Yes	Yes
Infrared Sensor	Yes	Yes
USB Connectivity	USB 3.2 Gen 1, Mass storage device, USB charging, USB OTG	USB 3.2, Mass storage device, USB charging, DisplayPort
Multimedia
FM Radio	No	No
Stereo Speaker	Yes	Yes
Loudspeaker	Yes	Yes
Audio Jack	USB Type-C	USB Type-C
Audio Features	Dolby Atmos	Dolby Atmos, Hi-Res Audio
Sensors
Fingerprint Sensor	Yes	Yes
Fingerprint Sensor Position	In Display	In Display
Fingerprint Sensor Type	Optical	Ultrasonic
Heart Rate Monitor	No	No
Other Sensors	Light sensor, Proximity sensor, Accelerometer, Compass, Gyroscope, Colour spectrum sensor	Light sensor, Proximity sensor, Accelerometer, Compass, Gyroscope, Barometer