Samsung Galaxy Prevail LTE Universal Windshield Dashboard Car Phone Holder for Smartphones&nbsp;- Black Easy expandable back button helps securely accommodate the size of your smartphone Heavy duty arms with 360 rotation capability allow flexibility Extra-large suction cup with lock button conveniently attaches to dashboard, windshield or any other smooth surface and easily removable Effortless maintenance of suction cup by wiping with a damp cloth Holder with sponge pads can hold devices up to 3.5 inches wide