It took me several hours just to charge my iPhone 11 Pro Max. He stopped charging several times, just sat at one percent for more than 20 minutes, which forced him to turn it off and the answer came into the phone. The phone was not used while charging. Cable length was great, but I seriously doubt it's Apple certified. It doesn't charge as well as the Apple charger. I guess I'll do what I should have done in the first place and pay Apple's prices for a real charger. Thank you for your time and money.