Trefis recently looked at the three reasons that Sprint is seeing an uptick in customer satisfaction that is showing in their stock prices. Over the past few years, Sprint has treaded a rocky road when it comes to customer satisfaction. They have found a way to turn this around. One reason they’ve increased customer satisfaction is because they’ve identified and supplied the need for prepaid phone cards. Supplying prepaid cards also allows for Sprint to avoid monthly subscriber losses due to unpaid bills. They’ve also increased the visibility of their brand and introduced new SmartPhones that are appealing to their audience. Read about their other improvements here.