T-Mobile has just announced their plans for Uncarrier part 5. The first big move of the T-mo's latest effort to shake up the wireless industry is the announcement of Test-Drive, a service through which users can get an iPhone 5S for seven days to take T-Mobile's "data strong" network for, well, a test drive. There's no down-payment, no charge, no nothing. Just get the device, try out the network, and return it at a store when you're done.

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