After updating iOS 9.3 my Apple ID has changed on IPhone ***?

Which Apple ID? The iCloud ID? iTunes & App Store ID/ Screen unlock ID? Facetime/iMessage ID?

Here is what probably happened:

• You are not the first owner of the phone
• A previous owner enabled Find my iPhone
• The phone eventually got to you; perhaps you bought it used
• You did not reset the phone, but used it as already set up, adding your own email account
• When you updated it iOS contacted Apple's activation servers, and found that it was Activation Locked to the hotmail email account

If this is the correct scenario your only option is to contact the owner of the hotmail account, and ask them to free Activation Lock.

The only other possibility is that someone hacked your iCloud Apple ID and changed the email address.

Open a web browser on your computer to https://icloud.com/find and log in with your Apple ID. Can you log in? Do you see your phone?

I don't need a screen shot; I believe you. If you see the phone in the Find my iPhone screen on the icloud web site then the Apple ID it is asking for on the phone is not your iCloud ID. You may have an app that was purchased or downloaded with the hotmail ID, and it needs it to update the app.

Try playing a sound on the phone from the Find my iPhone screen as confirmation. If that works the phone is locked to your Apple ID. Can you get past the setup screen on the phone?

If you are sure the device appears in Find my iPhone you can erase it from there, then set it up again. But this is a very unusual situation. You should probably contact Apple's account security team. Apple ID: Contacting Apple for help with Apple ID account security

I have the same problem with my iPad Air. I bough it new in UK Apple Store.

I also have the same problem with my iPad 4th generation.

Did Apple mess up somehow?

I deleted my iPad from Find my iPhone in iCloud but how do I set it up again?