<!-- from fixya rte -->How do I change apple id on my new phone - Cell Phones

Follow these steps to change your Apple ID password.
Your Apple ID is the account you use to access Apple services like the App Store, Apple Music, iCloud, iMessage, FaceTime and more.
If you want to change your password If you know your Apple ID password and want to change it, follow these steps.

On your iPhone, iPad, or iPod touch with iOS 10.3 or later

1. Tap Settings > [your name] > Password & Security.
2. Tap Change Password.
3. Enter your current password or device passcode, then enter a new password and confirm the new password.
4. Tap Change or Change Password.
5. Sign in with your new Apple ID password to access Apple features and services.

Learn more about how to change your Apple ID and update other account information.

On your Mac

1. Sign in to your Apple ID account page.
2. In the Security section, click Change Password.
3. Enter your current password, then enter a new password and confirm the new password.
4. Click Change Password.
5. Sign in with your new Apple ID password to access Apple features and services.

How To Change Your Apple ID Email Address

1. Go to appleid.apple.com, click Manage Your Apple ID, and sign in with your Apple ID.
2. Click edit to the right of your email address under the section called Apple ID and Primary Email Address.
3. Enter your new Apple ID email address.
4. Click Save. This is safe. I've chamged mine this way a couple of times.

goto applied.apple.com and login with your current Apple ID.
Next to your account info click on Edit on the right had side.
Click on the link for Change Apple ID. Enter your new Apple ID.

1. Go to appleid.apple.com, click Manage Your Apple ID, and sign in with your Apple ID.
2. Click edit to the right of your email address under the section called Apple ID and Primary Email Address.
3. Enter your new Apple ID email address.
4. Click Save.

you have to sign in with the new apple id by going into settings itunes and appstore then click sign out then sign in with your new apple id

Firstly, sign out of every apple device linked to your current ID. Next go to the link I've provided at the bottom. Use your current ID to sign in, you may need to enter an authorization code that will be sent to your devices. Once you log in sucessfully you will be brought to a page that will show your current email. You should see a little "edit" link in the top right. You can then add your new email there. After successfully entering it in, apple will send your new email another verification code. Enter that in and you can now use your new email as your apple ID.

https://appleid.apple.com/#!&page=signin

1. Go to Manage your Apple ID and sign on with your current Apple ID and password. Then EDIT the Apple ID and change it back to the old Apple ID (this is temporary - Do NOT verify it, Do NOT change the password): Apple - My Apple ID
2. Go to Settings>iCloud, scroll to the bottom and click Delete Account. Use your current Apple ID password when asked. Follow the prompts to complete the deletion of the iCloud account
3. Go back to Manage your Apple ID, and EDIT the Apple ID back to the New ID (you may need to verify it)
4. Go back to Settings>iCloud and sign on with your new Apple ID
You should be all set. I hope this will help somehow.

1. Sign out of iCloud, the iTunes Store, App Store, FaceTime, Find My Friends, Find My iPhone, and iMessage on each device that uses your current Apple ID for these services.

1. Go to My Apple ID (appleid.apple.com).

1. Select "Manage your Apple ID" and sign in. Forgot your password?

1. Select Edit next to "Apple ID and Primary Email Address."

1. Enter the email address to use as your Apple ID, then select Save Changes. Apple will send a verification email to that address.

1. Open the email from Apple, then click Verify Now in the email. Didn't receive the email?

1. When the My Apple ID page opens, sign in with your renamed Apple ID.

1. When you see a message that verification is complete, you can begin using your renamed Apple ID. You should also update the features and services that you use with Apple ID.

source: http://support.apple.com/kb/ht5621

Hi you can't change Apple ID the only way is to create new one if you need new password go here Apple ID Support

Create a new account with new email and password.Unsign everywere and then sign in with new.