AGENT IC: Does Agent IC work over 3G/ 4G connections?

Yes Agent IC does work over 3/4G networks.  

The simplest way to demonstrate  Agent-IC over the 3G / 4G connect would be to buy a Wi-Fi router with a build in SIM card / SIM card slot. This would give you the ability to show Agent-IC over Wi-Fi and then over 3G / 4G (by turning off the phones Wi-Fi connection).
Also the Wi-Fi router can be connected to a Eclipse/IVC Matrix card or LQ v4 device. This would also allow you to demonstrate  Agent IC client connecting to either a Eclipse matrix or a LQ v4 unit, using the Agent IC profile setting.