The iPhone 5C is going to be a great deal for those on prepaid carriers. It’s mostly aimed at Western Europe and China although we could see some growth in the U.S. The 5C would be great for T-Mobile, the fourth largest carrier in the US. T-Mobile is a network popular among budget-conscious consumers. When Google launched the Nexus 4, T-Mobile saw a huge increase in signups, largely due to the $30/month plan (100 minutes, Unlimited Texts, 5GB 4G data, unlimited 2G).
Consumers are starting to move away from lengthy two-year contracts and T-Mobile is perfect for that. Consumers aren’t required to sign a contract and instead pay their phone off in separate installments. This means that if they want to go to a new phone they only have to pay off the outstanding balance on the phone, making it far cheaper than other networks.
It's anticipated that the iPhone 5C will be sold for between $400 and $500 unsubsidized so if you’re on T-Mobile it might be worth considering.