I just received a note from my submit iPhone complaints form that AT&T does not honor any corporate discounts if you switch from an existing contract to an iPhone related service plan. Also the do not feel obliged to disclose that fact.

That is really something to think about. Everybody knows if you get a corporate contract for numerous mobile phones you will usually get a cheaper rate. This also makes sense for the mobile phone networks.  Having one client with 1000 phones is easier than having 1000 individual clients.

I also wonder if T-mobile in Germany or Orange offers reduced prices for corporate iPhone plans?