1)First,please contact Huawei service hotline.2)You can request repair you product in all HUAWEI Authorized Service Center, You can find a Huawei Authorized Service Center near you through MyHUAWEI – Support – Quick Service – Service Center, you also can check it on HUAWEI official website, suggest you make an appointment before you go to repair. If there is no HUAWEI Authorized Service Center near you, you also can request a postal repair to repair your products.