Initial data or main information
Official Release Date	2026, March 04	2025, September 25
Operating System at Release	Android 16, XOS 16	Android 16, HyperOS 3
Part Numbers	X6840, X6840B	2509FPN0BC
Price Range at Time of Release	-	About 720 EUR

Time and method of release

Time and method of release
Availability Status	Available. Released 2026, March	Available. Released 2025, September 25

Aesthetic features

Aesthetic features
Size and Dimensions	167.7 x 78.8 x 7.7 mm (6.60 x 3.10 x 0.30 in)	162.9 x 77.6 x 8 mm (6.41 x 3.06 x 0.31 in)
Product Weight		219 g (7.72 oz)
Color Options	Shadow Black, Cloudline Blue, Polaris Titanium, Sunlike Orange	Black, White, Purple, Green

Style and design

Style and design
Front Panel Material	Glass front, plastic back, plastic frame	Glass front (Dragon Crystal Glass 3), aluminum frame
Frame material type	IP64 dust tight and water resistant (water splashes)	IP68 dust tight and water resistant (immersible up to 6m for 30 min)

Body material and design

Body material and design
Compatible SIM Card Types	Nano-SIM + Nano-SIM	Nano-SIM + Nano-SIM

Display

Display
Display Panel Type	IPS LCD, 120Hz, 700 nits (HBM)	LTPO AMOLED, 68B colors, 2160Hz PWM, 120Hz, Dolby Vision, HDR Vivid, HDR10+, 3500 nits (peak)
Screen Size	6.78 inches, 109.5 cm 2 (~82.9% screen-to-body ratio)	6.9 inches, 116.6 cm 2 (~92.3% screen-to-body ratio)
Display Resolution	720 x 1576 pixels, 19.5:9 ratio (~259 ppi density)	1200 x 2608 pixels, 19.5:9 ratio (~416 ppi density)
Display Technical Details	-	Xiaomi Dragon Crystal Glass 3
Maximum Brightness Level	-	1026 nits max brightness (measured)

Processor or chip

Processor or chip
Chipset Model	Mediatek Helio G81 Ultimate (12 nm)	Qualcomm SM8850-AC Snapdragon 8 Elite Gen 5 (3 nm)
Processor Core Details	Octa-core (2x2.0 GHz Cortex-A75 & 6x1.7 GHz Cortex-A55)	Octa-core (2x4.6 GHz Oryon V3 Phoenix L + 6x3.62 GHz Oryon V3 Phoenix M)
Other Technical Details of Chipset	-	Ultra Wideband (UWB) support

Central Processor (CPU)

Central Processor (CPU)
GPU Model	Mali-G52 MC2	Adreno 840

Connections

Connections
Memory Card Slot	microSDXC (dedicated slot)	No
Bluetooth Support	Yes	5.4, A2DP, LE, aptX HD, aptX Adaptive, LHDC 5

Storage memory

Main camera

Main camera
Maximum Video Recording Quality of Rear Camera	1440p@30fps, 1080p@30fps	8K@30fps (HDR), 4K@30/60/120fps (HDR10+, 10-bit Dolby Vision HDR, 10-bit LOG), 1080p@30/60/120/240/960fps, 720p@1920fps, gyro-EIS
Rear Camera Details	-	50 MP, f/1.7, 23mm (wide), 1/1.28", 1.22µm, dual pixel PDAF, OIS
Main Camera Specifications - Wide/Standard	-	Laser AF, color spectrum sensor, Leica lens, Dual-LED dual-tone flash, HDR, panorama

Front camera

Front camera
Main Selfie Camera Specifications	8 MP, f/2.0, (wide), 1/4.0", 1.12µm	HDR, panorama
Resolution and Frame Rate of Selfie Video	1440p@30fps, 1080p@30fps	4K@30/60fps, 1080p@30/60fps, HDR10+, gyro-EIS

Audio features

Audio features
Speaker Type	Yes	-26.1 LUFS (Good)
Number of 3.5mm Jacks	Yes	No
Audio Capabilities	-	24-bit/192kHz Hi-Res & Hi-Res Wireless audio

Communications and sensors

Communications and sensors
Wi-Fi Specifications	Wi-Fi 802.11 a/b/g/n/ac, dual-band	Wi-Fi 802.11 a/b/g/n/ac/6e/7, dual-band, Wi-Fi Direct
Navigation Type and GPS	GPS	GPS (L1+L5), BDS (B1I+B1c+B2a), GALILEO (E1+E5a), QZSS (L1+L5), NavIC (L5), GLONASS
5G Support	-	1, 2, 3, 5, 7, 8, 12, 13, 18, 20, 25, 26, 28, 38, 40, 41, 48, 66, 70, 71, 77, 78, 79, 80, 81, 83, 84, 89 SA/NSA

Battery and charging features

Battery and charging features
Connection Port Type	USB Type-C 2.0, OTG	USB Type-C 3.2, Display Port, OTG

Capabilities

Capabilities
Smart Sensors	Fingerprint (side-mounted), accelerometer, proximity, compass	Fingerprint (under display, ultrasonic), accelerometer, proximity, gyro, compass, barometer