The newest craze is to put LTE into every phone possible (except the Nexus 4). The Apple iPhone finally got LTE, Samsung sacrificed their Exynos quad core for a Snapdragon S4 dual in the US Galaxy S III for LTE, and every manufacturer has tried to get an LTE device out in the US. This is because the US is one of the three biggest LTE markets in the world, the other two being Japan and Korea.
As of Q3 2012, Samsung still holds first place in LTE device market share. They have 40% this quarter, down from 50.9% last quarter. The reason for that decline is Apple finally joining the LTE game in September, netting 26.7% of the market share with a single handset. Third place is LG with 9.1% (down from 15), so we’re seeing two companies dominate.