Samsung has officially announced four new cell phones, which include both low end and mid-end models. M2310: clamshell, features two screens (main 2" display and secondary 1.06" one), a VGA camera, and a microSD slot supporting up to 8GB of additional storageM2510: slider, packs an FM radio tuner with a 3.5 mm audio jack, a 1.3Mpix camera, a 2.2" display, and a microSD slot. No 3G support.C5510: s...