Most of our emails are from work sectors which are highly confidential. In order to secure this data, passwords are set. Yet checking the device feature and changing the password from time to time is necessary as helps in maintaining security.
To change your Gmail password in Android,
Step I: Open Settings in your Android phone.
Step II: Scroll down to Google → Manage your Google Account → Security.
Step III: Tap “Password” under “Signing in to Google”
Step IV: Enter your new password and then tap “Change password”