Unlock animation freezes

Thanks for getting back to us, Pharma_first. Since you've tried those steps several times, I'd like you to restore your iPhone to factory settings then.

How to back up your iPhone, iPad, and iPod touch -- If you didn't do this previously, be sure to have a fresh backup.

Restore your iPhone, iPad, or iPod to factory settings -- These are the steps to return your phone to factory settings. The first time through, set up your iPhone as a new iPhone, but feel free to sign into iCloud, iTunes and App Store. Once your phone is back to the Home screen, see if lock-screen animation works as expected.

Get back to us when you're able.

Cheers!

Hi there, Pharma_first.

I see that the animation you see while unlocking your Phone stops responding, and I'm glad to help.

Restart your iPhone, iPad, or iPod touch -- Restart your iPhone. Once it's returned to the Home screen, see if the unlock animation continues smoothly.

How to back up your iPhone, iPad, and iPod touch -- If the animation still lags, please be sure to have a fresh backup to keep your personal information safe.

Update your iPhone, iPad, or iPod touch -- Since the issue remains, make sure your iPhone is up-to-date.

Let me know how that goes, and take care!

Thanks again, Pharma_first. Since you're still having the issue, it's time to contact Apple Support.

Apple - Support - Product Selection — After selecting this link, choose System Performance > Application or system is unresponsive. Then select how you'd like to start the conversation.

Enjoy your day!