Acer keeps the product announcements coming here at Computex, adding a new (and big) Android phone to its new Ultrabooks and Windows tablets. The Liquid S1 arrives with a 720p 5.7-inch display, matching ZTE's Grand Memo in screen size, and marking Acer's first contribution to the five-inches-and-over smartphone club. The phone is bound for Asia and Europe (no US release is planned for now), and it comes appropriately equipped with twin SIM-card slots. There is, however, no LTE radios, something that Acer admits will be arriving in its smaller Android devic