• All Products are checked by Testing machine Before Shipment.• All Products are checked by Testing machine Before Shipment.• High-Quality Battery. Giffen Battery is exclusively for you Mobile offers a long battery life.• New batteries should be charged for at least 3 to 4 hours for the first time.• This is an Original import unit & it comes without retail packaging, QC Pass, professional needed for installation. Note: After you installed the new battery Reset / format the phone to sync the battery with the phone.• Quality Checked, Long Lasting Back up, Long Life Battery