I haven't worked with any cellular shields, but I'd guess they have an SPI interface, which requires 4 pins (3 of which are shared with other SPI devices).
Getting a Serial LCD is much easier to work with both from a pin # and wiring perspective.
I haven't worked with any cellular shields, but I'd guess they have an SPI interface, which requires 4 pins (3 of which are shared with other SPI devices).
Getting a Serial LCD is much easier to work with both from a pin # and wiring perspective.