Model
X521 HOT S
platform
BANDWIDTH
Latin America
GSM:850/ 900/ 1800/ 1900
WCDMA:850/ 900/ 1700/ 2100
FDD-LTE:B2/ B4/ B7/ B28/ B20
AFRICA/THE MIDDLE EAST/ SOUTHEAST ASIA
GSM:850/900/1800/1900
WCDMA:850/ 900/ 2100
FDD-LTE:B1/ B3/ B5/ B7/ B8/ B20
TDD-LTE:B38/B40
Network
4G/ 3G/ 2G
GPU
MALI-T720 MP3 450MHZ
CPU Frequency
Octa-core Cortex 1.3GHz, 64bit
UP LINK
50Mb/s
DOWNLINK
150Mb/s
DATA
GPRS
YES
EDGE
YES, UP&DOWN LINK
3G
YES
4G
YES
CAMERA
Location
Pixels
Flash Light
Viedo Recording
Video Calling
Image Size
FRONT/ REAR
FRONT (8 MP ff) / REAR (13 MP af)
YES
YES
NO
Front Camera Max: 3264*2448 Rear Camera Max: 4160*3120
MEMORY
ROM
16 GB  16 GB
RAM
2 GB  3 GB
EXTRERNAL MEMORY
UP TO 128 GB
battery
Capacity
3000mAh
Talk Time
2G 27h / 3G 15h
Stanby Time
DAUL-SIM 192h
ONE SIM CARD 337h(2G) 337h(3G) 245h(4G)
connection
Sim Card Slot
2 MICRO SIM OR
MICRO SIM + MICRO SD CARD
GPS Navigation
YES
WiFi (WLAN)
YES
Bluetooth
YES,V4.0
USB Port
YES, MICRO USB 5 PIN
Earphone
YES, 3.5 JACK
OTG
YES
sensors & tools
G-sensor
YES
Light Sensor
YES
Proximity sensor
YES
hall sensor
YES
Compass
YES
Dimension
148.8*73.2*8.1mm
Color
Champagne Gold/ Med Blue/ Glossy Silver/ Berlin Gray/ Rose Gold
Weight
140g
Operation System
Android 6.0
packing
phone / power adapter / usb-cable / user guide / earphone