Using Tips1.Recommend bending the gooseneck arm into shape "S"or Z shape to provide better stability. 2.Recommend using both hands when you adjust angles: one holds the base while another hand bends the arm. 3.Not recommend using it to hold your phone for typing frequently, since It will wobble a bit. Flexible arm is mainly designed for watching video.24 Hours Customer ServiceIf our phone holder Doesn't hold your device, Missing Accessories, Broken or any other problem please feel free to contact with us. We will provide you with a satisfactory solution as soon as possible.Stable and Durable- The thickening adjustable clamp base varying from 0 to 2.36 inches (6cm), which is more stably mounted on the bed frame, bedside, headboard, nightstand, desk, end table and kitchen counter etc. Designed with a non-slip silicone base, the holder will not scratch the surface of your furniture.360Rotation & Adjustment- The Claw Clamp of this phone holder is 360 degree adjustable, you can easily adjust your cellphone to most comfortable viewing angle. Convenient and flexible!Upgraded Version- The arm of our gooseneck bed holder adopts better materials and design. It has improvements in both stability and durability. With 31.5 inches (80cm) long arm, high- quality Aluminum-magnesium alloy solid core makes the lazy arm sturdy enough to hold his phone firmly, yet flexible to bend in any direction to accommodate your view.