Shares of AAPL fell more than 4% on Tuesday as AT&T announced official iPhone figures.

The official carrier of the iPhone in America announced on Tuesday that it had signed up just 146,000 subscribers in the first two days of the iPhone being on sale.

The figure is well below analyst estimates of half a million and 700,000 units.

Pacific Crest analyst Andy Hargreaves said that while iPhone sales figures for coming months would be more telling than the first few days, AT&T’s number had disappointed investors as some analysts estimated sales “north of 500,000.”

Hargreaves had himself estimated 400,000 iPhone sales for the first two days, he said.

“The difference (between sales and activations) is going to be what was sold on eBay or activations that didn’t happen immediately. There were some problems with activations but from what we heard it was minimal,” the analyst said.

AT&T on Tuesday will announce in detail its second quarter earnings.