Test 4S with my wife, it not charge and had the same symptoms as my 3GS
The test with ipad, it recharges!
Edit of 08/02/13: Following my review, customer service contacted me 6 hours after seeing filed the notice. I wanted to mentioned that I was the victim of an isolated case (blame bad luck) for this charger. My Iphone 3GS longer works but ANKER assumes all responsibility for the problem and is committed to finding a solution as soon as I was to appraise my phone. It is also more customer service is reconciled and I just wanted to clarify! ANKER thank you
Edit of 31/10/2013: Anker found a resolution to the problem with my iPhone.
Customer Service on top! Anker thank you!