Find this button (a thumbnail of the Kindle logo) in the very top, left-hand corner of the screen. If you have a book open, press the settings menu followed by "Library". This will return you to the main screen.  This option is located in the “Registration” section. You will be effectively “signed out” of your account. Your device’s connection to the Amazon account it was registered under is severed. Launch the Kindle app. Click “Start Reading”. Enter the email address or mobile number associated with your Amazon account. Enter the password for your Amazon account. Press Sign In. Your device will automatically register with the Amazon account you entered.
افتح تطبيق كيندل. انقر على زر القائمة. توجه نحو قسم "الحساب" ثم انقر على خيار "الإعدادات". انقر على خيار "إلغاء تسجيل هذا الجهاز". سجل دخولك إلى تطبيق كيندل لتسجيل جهازك.