PERFECT COMPATIBLITY ? The battery has the same size as the original-battery and guarantees compatibility without problems. NOTE: After you installed the new battery Reset / format the phone to sync the battery with the phone. Please test and then install the product with the help of an expert technician. Compact design, High in quality and stable and performance, usually takes 2 hours to full Charge with Normal Power Adapter, With Fast Charging Adapter it will take less time.