Does anyone know why when my battery gets to 20% or less my universal dock will not charge the phone? Sometime it just sits on the charger and does nothing other times it pops up the message that this product is not an iPhone accessory. The only way to get the phone to start to charge is to plug it into the computer through the USB cable. Any ideas? I am running under 2.0.2 and believe this was happening before the update.