With gsmHat, you can easily use the functionality of the Waveshare GSM/GPRS/GNSS HAT for Raspberry Pi (Link to HAT). On this module a SIM868 Controller is doing the job to connect your Raspberry Pi ...
python3 -m pip install keras_applications==1.0.8 --no-deps python3 -m pip install keras_preprocessing==1.1.0 --no-deps python3 -m pip install h5py==2.9.0 sudo apt-get install -y openmpi-bin libopenmpi ...