Brand Yezz
Model Billy 5S Dual SIM LTE
Released 2015 Jan
Device Category 

Smartphone

Depth N/A
Mass 144 g
5.08 ounces
Platform 

Windows (mobile-class)

Operating System

Microsoft Windows Phone 8.1

CPU Clock 1200 MHz
CPU

Qualcomm Snapdragon 410 MSM8916, 2014, 64 bit, quad-core, 28 nm, Qualcomm Adreno 306 GPU

RAM Type 

Yes

RAM Capacity (converted) 1.00 GiB RAM
Non-volatile Memory Capacity (converted) 8.0 GB ROM
Display Diagonal 127 mm
5 inch
Resolution 720×1280
Pixel Density 294 PPI
Display Type 

Color IPS TFT LCD display

Number of Display Scales 16.8M
Scratch Resistant Screen  No
Graphical Controller Qualcomm Adreno 306
Dedicated Graphics Memory 0.125 MiB
A/V Out  No
Microphone(s) 

mono

Loudpeaker(s):  

mono

Audio Output:  

3.5mm

Supported Cellular Bands 

GSM850
, GSM900
, GSM1800
, GSM1900
, UMTS2100 (B1)
, UMTS1900 (B2)
, LTE1800 (B3)
, LTE2600 (B7)
, LTE800 (B20) bands

Supported Cellular Data Links 

GPRS
, EDGE
, UMTS
, HSUPA
, HSDPA
, HSPA+ 21.1
, LTE
, LTE 150/50 data links

SIM Card Slot 

Yes

Complementary Phone Services 

Voice transmission
, Voice speaker
, Vibrate
, Speakerphone

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 

Yes

Touchscreen Type 

Capacitive multi-touch screen

Expansion Interfaces 

TransFlash
, microSD
, microSDHC
, microSDXC

USB 

USB 2.0

USB HS (480 Mbps)

USB Services 

USB charging

USB Connector 

USB Micro-B (Micro-USB)

Bluetooth 

Bluetooth 4.0

Wireless LAN 

802.11b
, 802.11g
, 802.11n

Wireless Services 

Wi-Fi Tethering

FM Radio Receiver 

FM radio (88-108 MHz)

Complementary GPS Services 

A-GPS
, Geotagging
, QuickGPS

Supported GLONASS protocol(s) 

Yes

Camera Placement 

Rear

Camera Image Sensor 

CMOS

Number of effective pixels 12.8 MP camera
Zoom 1.0 x optical zoom
Focus 

CD AF

Video Recording 1920×1080 pixel
30 fps
Flash 

single LED

Camera Extra Functions 

Macro mode

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 5.0 MP 2nd camera
Secondary Video Recording 1280×720 pixel
30 fps
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

removable

1-cell
Nominal Battery Capacity 2000 mAh battery
Data Integrity 

Preliminary