This video describes how to enable UART on GPIO pins of RASPBERRY PI 3 B or B+ & to interface with GSM
The port /dev/ttyAMA0 in PI 3 is allotted to Bluetooth hardware.
port /ttyS0 ,mini uart is allotted to serialport which has to be enabled manually.
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Watch video Raspberry PI 3 B / B+ How to Enable UART & interface with GSM online without registration, duration hours minute second in high quality. This video was added by user Saravanan AL 28 July 2018, don't forget to share it with your friends and acquaintances, it has been viewed on our site 93,965 once and liked it 894 people.