1. Register a Central Asia account (if you have spent money in Central Asia before, you can use the original account, but it must be an account with an email address. The earliest user who logs into the system with a user name without a mailbox needs to change it to a login name with a mailbox suffix in the settings)
2. download the iphone Kindle in the APP;
3. Open the kindle App, log in with a Central Asia account, and it will automatically register;
4. Log in to Central Asia account with computer and check "Manage my kindle". In my kindle account, you can find the registered kindle software, the device name and the email address sent to the kindle (if the iphone is registered, the information of your iphone will be displayed).
5. Remember "the email address sent to kindle (usually XXX@kindle.cn; )
6. Then, in the personal document settings, set the sender's approved email address to push (generally set the email address you usually use), and the kindle defaults to 20 addresses to push personal documents.
7. Use the set sender's email address, bring the e-book or other files you need to read on the iphone, and send an email to your kindle email address;
8. After successful sending, you can read your own e-books or documents on the kindle reading software of iphone.