Compact but fast break

At first I was thrilled by the Belkin USB adapter. Beautifully compact and kept flat, the Audi A4 can be plugged in adapter even close the door. The function with iPhone was smooth. Since 2-3 months but now I had the problem that the iPhone logs in increasingly shorter intervals that the charger is not compatible. By switching off and plugging the problem could then be rectified quickly. But I also noticed that the USB adapter has been getting hotter and only by prolonged cooling worked again for a few minutes at the end. Since the problem probably some concerns here, I suppose it was a quality problem. Therefore, unfortunately, only two stars for a really decent product.