The addition of 1.9 million 3G iPhone accounts helped AT&T to post USD $0.41 earnings per share (EPS) for the fourth quarter.
Apple’s handset made up the bulk of the 2.1 million net new customers that the telecom company gained in the period.
It enabled AT&T to announce full-year earnings per share of USD $2.16, up from USD $1.94 for 2007.
The Dallas-based company’s result surprised some analysts, who were expecting poorer figures following Apple’s recent reporting of a 36 per cent decline in iPhone shipments.
The iPhone helped push up revenue for Web browsing and video download by 51 per cent compared to the previous year.
Total corporate revenue grew 2.4 per cent to USD $31.1 billion and wireless revenue reached USD $11.5 billion.
Rival Verizon, meanwhile, wouldn’t give details on the number of BlackBerry Storms sold in its first quarter on the market.
Reports suggest the figure could be around a quarter of the iPhone’s total.