GPRS Shield v. 1.4 — Receiving Data

Hello all,

I just bought a couple of GPRS shields (v. 1.4) and I’m trying to make them talk to each other (on Arduino Unos). I purchased SIM cards and phone plans for them, and I managed to get them to send text messages and phone calls, but I’m not sure how to get them to receive data. I’ve gone through multiple code examples, but to no avail. Any help would be largely appreciated.