Ahh, the glamorous life of AT&T: best friends with Steve Jobs, exclusive rights to the iPhone (for now) and carrier of choice on the iPad. So why, with everything going for it, did the stock miss a huge rally? In the year ending April 1, Apple soared 109% and the S&P 500 rose 41%. AT&T? Down 2%. The problem is growth, or lack thereof: little in its saturated wireless business and a decline in landlines, which still accounts for 25% of sales. Unless its high-speed Internet business takes off or the iPad drives new wireless growth, the beatings by Wall Street will continue.