AT&T reported today that they had 1.6 million iPhone activations domestically in the March quarter. Last quarter they activated 1.9 million iPhones and Apple ended up with 4.4 Million iPhones sold. Piper's Gene Munster showed off his algebra chops by running this formula: 4.4/1.9=x/1.6. x=equaling the number of global iPhone sales for the March quarter, which in this case equals 3.7 million iPhones total. That is assuming nothing has changed in the last 3 months.
We tend to think this could go higher because of things like unlocked