You can now order an iPhone 5 at T-Mobile for $99 with plan or $579 for delivery April 12

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Starting today, customers will be able to order the iPhone 5 on T-Mobile’s newly revamped “un-carrier” unlimited plans for a carrier-exclusive low price.

Along with the low down payment on the pre-order comes a two-year financing plan that totals $579.99, which is $70 cheaper than purchasing the phone unlocked. Plans start at $50 per month for 500MB of high-speed data and throttled data afterward, while $70 per month gets unlimited high-speed data.

Following the pre-orders this week, all models of the iPhone will be available for immediate purchase on April 12. Customers who purchase a new iPhone 5 through Apple or T-Mobile will be able to take advantage of T-Mobile’s speedy LTE network in markets where it is available, but those who use older AT&T or unlocked iPhone 5 models will need to install an over-the-air update to do so (and won’t get all the AWS HSPA bands without new hardware). T-Mobile also announced that the updated iPhone 5 will receive HD Voice service in a future software upgrade.

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