inputs.text: ok substitute expensive dock extenders - update worked ok almost 2 months something rattling inside unit plugged iphone 4s not charge purchased 41915 61615 broken price vs buying expensive lifeproof extender iphone lifeproof case works fine extender not long lifeproof extender still works extra careful pulling since not much grabbing surface lifeproof extender past 2 months careful pulling extender not know broken inside not work anyone know complain get replacehement never returned anything amazon anyone knows please lehemme know