Kevin Willis, the retired basketball center turned entrepreneur, gave up on the BlackBerry and depends on Apple’s iPhone to stay in touch with buyers, suppliers and the high-profile clients who wear his custom jeans. “It does everything I need a phone to do for me and my business,” said Willis, 46, who left the National Basketball Association last year after more than two decades and now helps run Willis & Walker clothing company in Atlanta. That’s just what Apple Chief Executive Officer Steve Jobs wants to hear.
