Final answer:
To enable autofill passwords on your Android device, ensure that the autofill feature is enabled in settings and that the password saving feature is enabled in your browser or password manager. Some apps may not support autofill or override system settings. Clearing the cache and data of the autofill service may also help.
Step-by-step explanation:
The reason why your passwords aren't auto-filling on your Android device may be due to a couple of settings and configurations on your device.
First, make sure that the autofill feature is enabled in your device's settings. Go to Settings > System > Languages & Input > Advanced > Autofill service, and select the appropriate autofill service. Additionally, check that the password saving feature is enabled in the browser or password manager that you are using.
Furthermore, some apps may not support the autofill feature or override the system settings. In such cases, you may need to manually enter your passwords. It is also important to note that for security reasons, autofill may not work in certain situations, such as when entering critical information like credit card details or passwords in sensitive applications.
If the issue persists, try clearing the cache and data of the autofill service on your device. This can be done by going to Settings > Apps > [Autofill service name] > Storage & cache, and selecting Clear cache and Clear data.