11
SD Card
On-board and UFL
LTE antenna
Nano SIM card slot
LCD 40-pin FPC
socket
Re-chargeable
battery 2-pin JST
connector
MCU
(
SAMD21G18A
)
LTE/MCU
switch
USB Micro-B
SWD
GPIO/I2C/SPI/
3.3V/5V pins
MCU RESET
button
NB-IoT & GNSS
modem (BG96)
On-board and UFL
GNSS antenna
USB Boot
Modem LEDs
NET & STATUS
Re-chargeable battery LEDs
D7:CHARGING
D8:DONE
Figure 5. NB-IoT Phone Bottom Side – Key Components