For Apple users, Apple ID usernames and passwords are often used, but many users forget their usernames and passwords. This involves retrieving usernames, password reset questions and answers, and resetting passwords. There are three cases: 1. iCloud and App Store use the same Apple ID which means you only need to process one ID. 2. iCloud and iTunes, App Store use different Apple IDs If the email address used by one of the IDs has been invalidated, you can modify the email address associated with this ID. If iTunes and the App Store use someone else's email address, you'll need to tell them that you forgot your Apple ID password. This may be because family or friends help you buy the device and set it up, and let you use their Apple ID in iTunes and the App Store, saving you the same amount of money to buy the same app. If the iCloud email address is not your own, you will need to safely delete this iCloud account. If it's your own, just reset your password. If it is your own, but the email address is no longer valid, you will need to safely delete this iCloud account and change your account to the email address you are using now. 3. Apple ID is not displayed. If the Apple ID is not displayed in the “Settings“ menu, this requires a little trick. If you have multiple email addresses but don't remember the address used by the Apple ID, follow these steps. If there is only one email address, the following steps can be ignored. 1. Open the Apple Account Management page. 2. Click on “Retrieve your Apple ID” link in the lower right corner of the page. 3. Enter your name and all email addresses you have used in the open page. There are two outcomes at this point: one is to show that only one email address is used for the Apple ID, and the other is to have multiple email addresses for the Apple ID. It’s easier to reset your password after you retrieve your Apple ID. 4. Open your browser and go to the iforgot.apple.com page 5. Enter your Apple ID, select Email Verification or Password Reset Problem Verification and press Next. If you never receive a verification email or forget the answer to your password reset question, don't go to an Apple retail store. Because the retail store's service personnel have no right to retrieve the password. They will tell you to call Apple Care. After calling Apple Care to dial 1-800-APL-CARE (1-800-275-2273), you will be taken to the automated system and if the problem cannot be resolved, the system will be transferred to the manual service. If you don't like to use an automated system, this approach may not be for you. Let Apple Care take the initiative to contact you. If you prefer to talk directly to the service staff, you can let the Apple Care service staff contact you at the Apple Support page. (Note: This feature is only available if the website language is English.) 1. Click the “Get Started” link under “Contact Apple Support”. 2. Click the “Get Started” button in the open web page. 3. Select “More Products & Services”. 4. Select “Apple ID” on the right. 5. Select "Forgotten Apple ID security questions" on the right side of “Other Apple ID Topics”. 6. Click “Continue”. 7. Select “Schedule a Call”. 8. Enter your contact information.