Benq-Siemens C81 vs OnePlus Open Specs Comparison

Availability

Officially announced
Mar 08, 2006	Oct 19, 2023
Prices (MSRP)
	$1699

Design

Dimensions
4.09 x 1.83 x 0.69 inches 104 x 46.5 x 18 mm	6.04 x 5.63 x 0.23 inches 153.4 x 143.1 x 5.8 mm
Folded
	(153.4 x 73.3 x 11.7 mm)
Weight
3.17 oz / 90.0 g	8.43 oz / 239.0 g
Resistance
	Yes; IPX4
Biometrics
	Fingerprint (touch)
Features
Soft keys

Display

Size
	7.8-inch, 89.68% screen-to-body
Type
TFT	AMOLED, 120Hz, HDR, 2800 nits
Resolution
176x132px	2268x2440px, 1.07:1 ratio, 426 PPI
Colors
262 144
Features
	Folding inside the device, HDR support, Ambient light sensor, Proximity sensor
Front cover display
	6.3 inches 2484 x1116 px AMOLED 120Hz refresh rate, HDR support

PhoneArena Display Test

Bright Max (20% APL)
Untested	1516 (Good)
Bright Min
Untested	1.9 (Good)

Learn more on our PhoneArena Display Test Results page.

Hardware

System chip
	Snapdragon 8 Gen 2 SM8550 (4 nm)
Processor
	Octa-core 1x3.2GHz Kryo Prime 4x2.8GHz Kryo Gold 3x2.0GHz Kryo Silve
GPU
	Adreno 740
Memory
0.023GB	16GB/512GB (UFS 4.0)
Storage expansion
RS-MMC up to 128 GB	not expandable
OS
	Android (13)

PhoneArena Performance Test

GeekBench 6 Single
Untested	1560
GeekBench 6 Multi
Untested	5093
3D Mark High
Untested	3634
3D Mark Low
Untested	2488

Learn more on our PhoneArena Performance Test Results page.

Battery

Type
820 mAh, Li - Ion	4805 mAh
Charging
	Fast charging Reverse wired charging
Charge speed
	Wired: 67.0W

PhoneArena Battery Tests

Battery Life Estimate

Untested

Browsing

Untested

Video

Untested

Gaming

Untested

Battery Life Estimate

5h 35min

Browsing

13h 20min

Video

7h 22min

Gaming

8h 51min

Learn more on our PhoneArena Battery Test Results page

Camera

Rear
Single camera	Triple camera
Main camera
1.3 MP	48 MP (OIS, PDAF) Aperture size: F1.7 Focal length: 24 mm Pixel size: 1.12 μm
Second camera
	48 MP (Ultra-wide, PDAF) Aperture size: F2.2 Focal Length: 14 mm Sensor size: 1/2" Pixel size: 0.8 μm
Third camera
	64 MP (Telephoto, OIS, PDAF) Optical zoom: 3.0x Aperture size: F2.6 Focal Length: 70 mm Sensor size: 1/2" Pixel size: 0.7 μm
Flash
	LED
Video recording
	4K UHD (60 fps), 1080p (240 fps)
Front
	32 MP Folded: 20 MP

PhoneArena Camera Tests

N/A

Overall

N/A

Photo

N/A

Video

144

Overall

150

Photo

138

Video

Learn more on our PhoneArena Camera Test Results page

Connectivity & Features

Bluetooth
	5.3
WLAN
	b,g,n,ac,Wi-Fi 6,Wi-Fi 6E,Wi-Fi 7,ad Wi-Fi Direct, Hotspot 802.11 b, g, n, ac, ax, ad
USB
USB 2.0	Type-C, USB 3.1
Sensors
	Accelerometer, Gyroscope, Compass, Hall (for flip covers), Ambient light sensor, Proximity sensor
Location
	GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
Other
	NFC

Multimedia

Headphones
	No 3.5mm jack
Speakers
	Earpiece, Multiple speakers

Cellular

5G Bands
	n1, n2, n3, n5, n7, n8, n12, n20, n25, n28, n30, n38, n40, n41, n66, n71, n75, n77, n78, SA, NSA, Sub-6
4G (FDD) Bands
	1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 30, 32, 66, 71
4G (TDD) Bands
	38, 39, 40, 41, 46, 48
3G Bands
	1, 2, 4, 5, 6, 8, 19
Data Speed
	LTE-A, HSDPA+ (4G) 42.2 Mbit/s
SIM type
	Dual Nano SIM

Phone Features

Notifications
Music ringtones (MP3), Vibration, Speakerphone
Other features
Voice recording

Regulatory Approval

FCC approval
Date approved: May 16, 2006 FCC ID value: PWX-C81
Measured SAR
Head: 0.44 W/kg Measured in: 1900 MHz Body: 0.34 W/kg Measured in: 1900 MHz

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Full Specs Benq-Siemens C81 Specs

Full Specs OnePlus Open Specs PA Review OnePlus Open Review