The iPhone 7 is now free for switchers at Metro By-T-Mobile. It had been available previously for $29.99. The iPhone 7 seems to be the featured low-cost Apple device that carrier prepaid brands are using to try and lure in new customers. At the end of July, Cricket also offered it for free before recently adjusting its deal price back up to $49.99. For months, AT&T stores have been featuring the device on storefront windows as available for $99. And Boost Mobile has had it as a deal with a fluctuating price between $29.99 and $49.99. Like all of the available promos, Metro's offer comes with limitations.