My problem is as the title, can 3G-4G/LTE Base Shield work with only USB connected on raspberry pi? Since I am sure it can work with only USB connected on Windows.
If not, which pins are necessary to connect along with USB to make is functional?
Besides, is this shield can work only with UART connected without USB?
Another problem I am suffering is that it seems like my PPP is created successfully on my raspberry pi since I got ip address assigned on wwan0 and I can ping google through AT command, but when I try to use web browser to open same web page, it always failed with EER_NAME_RESOLUTION_FAILED or the connection is interrupted.