The telecom giant hasn't increased its dividend in a couple of years, but steady raises could be around the corner.Billionaire investors don't necessarily need quarterly payments from dividend stocks to cover their day-to-day expenses, but they buy them anyway. That's because businesses that distribute a portion of their profit to shareholders tend to outperform businesses that haven't made such a commitment.History says buying dividend payers can help your portfolio outperform the broad market. Between 197 ...