Every time I make a change to my contact list or to my calendar I have to enter a password, why?and how can I remove iti

Hello Delenabryant,

Thanks for using Apple Support Communities.

If you're using iCloud Contacts and Calendars, and are being prompted to enter your iCloud password when updating either, then I recommend signing out of iCloud on your iPhone, and then signing back in.

1. Tap Settings > iCloud on your iOS device. If you see the option to sign in, you can change your Apple ID now.
2. Scroll down and tap Sign Out. In iOS 7 or earlier, tap Delete Account. After you sign out of iCloud, you might not be able to access some of your data that's stored in iCloud until you sign in again. If you're part of a family, you'll need to sign back in to use Family Sharing.
   
   
3. Choose Keep on My iPhone or Delete from My iPhone.
4. Enter your password.
5. Go to Settings > iCloud and enter your Apple ID and password.
6. Tap Sign In.

Sign in with a different Apple ID on your iPhone, iPad, or iPod touch - Apple Support

Have a good one.