Apple iPhone 5
The iPhone 5 completely rebuilds the iPhone on a framework of new features and design, addressing its major previous shortcomings. It's absolutely the best iPhone to date, and it easily secures its place in the top tier of the smartphone universe.
Nokia Lumia 635
With its fun design and cheap price, the Lumia 635 is a decent option to consider if you're after 4G LTE on a budget. It's only marginally more expensive than its near-identical 3G-only Lumia 630 sibling, so you should certainly opt for the 635. If you want a better selection of apps however, the Motorola Moto G is still the 4G phone to go for.