Hello Yhaneeeey,
Thanks for using Apple Support Communities.
If you need to sign in with a different Apple ID for iCloud on an iPhone, then please follow the directions below. Once you sign in with your new Apple ID, it will download the content you select from iCloud.
- Tap Settings > iCloud on your iOS device. If you see the option to sign in, you can change your Apple ID now.
- 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.
- Choose Keep on My iPhone or Delete from My iPhone.
- Enter your password.
- Go to Settings > iCloud and enter your Apple ID and password.
- Tap Sign In.
Sign in with a different Apple ID on your iPhone, iPad, or iPod touch - Apple Support
Take care,
Alex H.