Leading US operator AT&T has announced that it will add two new Samsung Galaxy smartphones to its inventory, apart from the previously-announced Galaxy Note II and Galaxy Tab 2 10.1. AT&T has further added to its Galaxy pool the 4G LTE Express and Rugby Pro. Samsung has been saying that the Galaxy Express will be the right product for first-time smartphone users. This is going to be an Android 4.0-based device with a 4.5-inch Super AMOLED Plus touch screen. It will have a 1.5-GHz dual-core processor and 2000 mAh battery. The Rugby Pro is for those who are a little more active on their smartphone. It “can handle whatever life throws at it,” a Samsung news release claims. This phone is waterproof, shock resistant and dust-proof. It comes a 4-inch WVGA Super AMOLED display and a 5-megapixel rear camera. The Rugby Pro would have access to Enhanced Push-to-Talk. AT&T had announced the addition of Galaxy Note II last month after it included the Galaxy Note smartphone/tablet combo to its offerings. The Galaxy Note II has a 5.5-inch screen, Android 4.1 Jelly Bean and 1.6-GHz quad-core Exynos processor. While the availability and pricing for these devices is not known, Samsung has announced that these products will soon be available to US carriers. AT&T’s 4G LTE network expanded last week to include Detroit, Honolulu, Seattle, and Pittsburgh.