HomeAll RepliesRe: Upgrading to iPhone 4s. Anything I need to know re MyLink? Re: Upgrading to iPhone 4s. Anything I need to know re MyLink? Sponsored July 5, 2012 at 2:04 pm #40305 Alex LuftKeymaster @ewh173 I believe this is normal behavior. When plugged in via USB/Apple 30-pin dock connector, the iPhone should charge as quickly as it would when plugged into the wall. Just one more reason that USB ports in cars are awesome 😀 Sponsored Subscribe to GM Authority For around-the-clock GM news coverage We'll send you one email per day with the latest GM news. It's totally free. First Name Last Name Email Address Subscribe via Email Leave this field empty if you're human: Sponsored