Can you explain these GPRS connection problems: (#CME ERROR: 35841) (+CGEV: NW DEACT 'IP')

- The reason the +CGREG responses would be displayed is if the modem was seeing registration changes from the network. The 35841 error means that the GPRS session was lost.

- The +CGEV response means that the network has deactivated the GPRS session. This normally happens if you have been connected too long to the provider's server.