Samsung Galaxy S4
The Samsung Galaxy S4 remains one of the best T-Mobile options on the market and it will only improve as Samsung works to upgrade it with new software.
Read: Samsung Galaxy S4 Review.
Down the road, the device should receive Android 4.3 Jelly Bean and Android 5.0 Key Lime Pie, and it should also get a dose of the software features that arrive with the Galaxy Note 3 in September.
This is a device that will remain near the top of the heap until the arrival of the Samsung Galaxy S5 in early 2014.