AT&T’s 4G LTE portfolio got a boost in number over the weekend with the release of the HTC Vivid and Samsung Galaxy S II Skyrocket. The handsets are available at $199.99 for the Vivid and $249.99 for the Skyrocket, though the phones have been given sale prices off only $99.99 and $149.99 respectively in some regions. Both Android 2.3 handsets run on dual-core processors — clocked at 1.2GHz for the Vivd and 1.5GHz for the Skyrocket — and feature the large displays typical of current high-end Android devices. Head over to the links below to pick up your own.