With the upcoming introduction of its LTE network and vast fall smartphone lineup, US Cellular's a regional carrier with a lot to look forward to. But its efforts over the second quarter, paired with the hopes of a bright future ahead, weren't enough to keep a few thousand customers from parting ways. While most of the reported figures were quite pleasant year-over-year -- service revenues bumped up three percent to $1 billion, percentage of smartphones sold skyrocketed to nearly 40 percent, ARPU increased to $51.84, and total operating income shot up a whole 61 percent -- the company also expe
