Important Notices: ? Be sure the working temperature is above 0??32?) because the motorized arms would not open/close below 0?. If your living area is cold, we suggest you warm up the holder from hot air blowing on it from the vent before using the holder. ? Please plug the cable into the QC3.0 car charger to ensure that the motor have enough electricity when you clamp or release the phone, or the clamping arms don't move. ? About the car charger: Please Plug the cable into QC 2.0/3.0 car charger to ensure fast charging; Non-QC car charger, 2.4A car charger or USB Port don't support fast charging and supply enough power to this device. Package comes with 4.92FT/1.5M Micro USB Cable, but Car Cigar Lighter are not included. ? About the Phone case: Please remove Uneven or rugged case,metal ring holder, metal attachments and credit cards for optimal charging. Be sure your phone case is NOT thicker than 4mm (0.16 inches) . ? About the Charging Coil alignment: Please adjust the bottom bracket to make the phone at the wireless charging Inductive center. It will fail to charge if placed improperly. ? Preventing your phone from overheating: We suggest you close Apps to reduce power consumtion and turn off phone screen during wireless charging. ? Red Light Means Unable to Charge: 1) Please adjust the telescope tray to align; 2) the case isn't compatible with wireless charging; 3) plug the cable into the QC2.0/3.0 Car Charger.