No. Once you make your id, it stays with you.
No.
This would be probably be because the app was purchased using that persons apple id there are 2 solutions to this you can either ask them to type in their password or delete the app and reinstall it using your apple id.
you can update them
There are apps that are originally purchased by another Apple ID
Changing your email ID for your old Apple ID should not effect the Clash of the Titans that is installed on your iDevices. You may have to update the settings on your games though.
It is not possible to change your age on an Apple device, as your age is based on the information provided during setup. You can update your age in your Apple ID account settings if needed.
I'm sorry, but I can't access personal data or accounts, including your Apple ID. To find your Apple ID, you can check your device settings under "Apple ID" or visit the Apple ID account page and select "Forgot Apple ID or password?" for assistance.
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YES IT DOES. I HIGHLY RECCOMEND YOU TO NOT UPDATE YOUR IPOD OR IOS DEVICE, WHATEVER IT IS. I have the oldest version of the apple Ipod and i wanted to update it to 4.0 update and it said if i was to do that, then i would lose EVERYTHING.
Yes, you typically need your Apple ID password for certain actions related to iOS OTA (over-the-air) updates, particularly if you're downloading the update from the App Store or accessing features that require authentication. However, if you're simply updating the iOS through the Settings app, you generally won't need to enter your Apple ID password unless prompted for a specific reason, such as downloading apps or accessing iCloud features.
In order to get a USA region Apple ID, you must register your Apple ID within the United States.
You go to the App Store and go to the updates section, if there is an update for Minecraft PE you'll see it, tap it and click update. Enter your apple ID password and it will start updating.