The prepaid carrier gives customers unlimited access to high-speed data, but with a few caveats.
The 4.5-inch LTE-enabled smartphone arrives in staggered launch dates throughout July.
The Un-carrier and its no-contract brand will carry an entry-level LG Optimus handset each, aimed at wallet-conscious customers.
The carrier now offers the new S5 for the full contract-free price of $649.
The no-contract carrier adds Samsung's latest smartphone to its Android portfolio.
It's ahead of schedule in migrating customers from the MetroPCS and plans to decommission the old network in Boston, Philadelphia, and Las Vegas by the end of the year.
Available first on T-Mobile's network, these mid-and entry-level Android phones make the move to Metro.
The prepaid carrier's latest is a 4G LTE Android that can withstand water, drops, and dust.
Sprint, meanwhile, pulls up the rear among the major wireless carriers. Among non-contract carriers, the top ranking goes to Virgin Mobile.
A new Data Boost rate plan gives subscribers 2.5GB of high speed data for $35 per month.