Brand Protruly
Model D8 Darling VR Phone Dual SIM TD-LTE
Released 2016 Nov
Hardware Designer Shenzhen Darling Intelligent Technology
General Extras 

Haptic touch feedback

Device Category 

Smartphone

Width 76 mm
Height 181.4 mm
Depth 8.9 mm
Dimensions 2.99×7.14×0.35 inches
Mass 222 g
7.83 ounces
Platform 

Android

Operating System

Google Android 6.0.1 (Marshmallow)

CPU Clock 2500 MHz
CPU

MediaTek Helio X25 MT6797, 2016, 64 bit, deca-core, 20 nm, ARM Mali-T880 GPU

RAM Type 

LPDDR3 SDRAM

RAM Capacity (converted) 4.00 GiB RAM
Non-volatile Memory Capacity (converted) 64.0 GB ROM
Display Diagonal 139.7 mm
5.5 inch
Resolution 1080×1920
Horizontal Full Bezel Width 7.51 mm
Display Area Utilization 60.5%
Pixel Density 401 PPI
Display Type 

AM-OLED display

Number of Display Scales 16.8M
Scratch Resistant Screen 

Yes

Graphical Controller ARM Mali-T880MP4
GPU Clock 700 MHz
A/V Out  No
Microphone(s) 

mono

Loudpeaker(s):  

mono

Audio Output:  

3.5mm

Supported Cellular Bands 

GSM850
, GSM900
, GSM1800
, GSM1900
, UMTS2100 (B1)
, UMTS900 (B8)
, CDMA800 (BC0)
, CDMA1900 (BC1/BC14)
, TD-SCDMA2000
, TD-SCDMA1900
, LTE2100 (B1)
, LTE1800 (B3)
, LTE2600 (B7)
, TD-LTE2600 (B38)
, TD-LTE1900 (B39)
, TD-LTE2300 (B40)
, TD-LTE2500 (B41) bands

Supported Cellular Data Links 

GPRS
, EDGE
, UMTS
, HSUPA
, HSUPA 5.8
, HSDPA
, HSPA+ 21.1
, HSPA+ 42.2
, cdmaOne
, CDMA2000 1x
, CDMA2000 1xEV-DO
, CDMA2000 1xEV-DO Rev A
, TD-SCDMA
, TD-HSDPA
, LTE
, LTE 50/25
, LTE 75/25
, LTE 100/50
, LTE 150/50
, LTE 225/50
, LTE 300/50
, LTE 600/50 data links

SIM Card Slot 

Nano-SIM (4FF)

Complementary Phone Services 

Voice transmission
, Voice speaker
, Vibrate
, Speakerphone
, VoLTE

Dual Cellular Network Operation 

Dual standby operation

Sec. Supported Cellular Networks:  

GSM850
, GSM900
, GSM1800
, GSM1900

Sec. Supported Cellular Data Links:  

GPRS
, EDGE

Sec. SIM Card Slot 

Micro-SIM (3FF)

Touchscreen Type 

Capacitive multi-touch screen

Expansion Interfaces 

TransFlash
, microSD
, microSDHC
, microSDXC

USB 

USB 3.1

USB HS (480 Mbps)

USB Services 

USB charging
, USB fast charging
, USB Host
, USB OTG 1.3
, USB OTG 2.0
, USB PD

USB Connector 

USB C reversible

Bluetooth 

Bluetooth 4.0

Wireless LAN 

802.11a
, 802.11b
, 802.11g
, 802.11n
, 802.11ac

Wireless Services 

Wi-Fi Direct
, Wi-Fi Tethering

FM Radio Receiver 

FM radio (88-108 MHz) with RDS

Complementary GPS Services 

A-GPS
, Geotagging
, QuickGPS

Supported GLONASS protocol(s) 

Yes

Supported BeiDou system (BDS) 

Yes

Camera Placement 

Rear

Camera Image Sensor 

CMOS

Number of effective pixels 13.0 MP camera
Aperture (W) f/2.00
Zoom 1.0 x optical zoom
Focus 

CD AF

Video Recording 1920×1080 pixel
30 fps
Flash 

dual LED

Camera Extra Functions 

HDR photo
, Touch focus
, Macro mode
, Panorama Photo
, Face detection
, Face tagging
, Face retouch

Aux. Camera Image Sensor  No
Aux. 2 Camera Image Sensor  No
Aux. 3 Camera Image Sensor  No
Aux.4 Camera Image Sensor  No
Secondary Camera Placement 

Front

Secondary Camera Sensor 

CMOS

Secondary Number of pixels 8.0 MP 2nd camera
Secondary Aperture (W) f/2.40
Secondary Video Recording 1920×1080 pixel
30 fps
Secondary Camera Extra Functions 

Face detection

Sec. Aux. Cam. Image Sensor  No
Built-in compass 

Yes

Built-in accelerometer 

Yes

Additional sensors 

Light sensor
, Proximity sensor

Protection from solid materials 

Yes

Protection from liquids 

Yes

Battery 

Li-ion polymer (LiPo)

built-in

1-cell
Nominal Battery Capacity 3560 mAh battery
Market Countries 

China
, HK

Market Regions 

Asia

Mobile Operator

China Mobile Limited

China Telecom Corporation Limited

China Unicom Netcom Limited

Data Integrity 

Preliminary