iPhone 13 clock running 25 minutes behind!

Gravenstein22 wrote:

Do you think this has anything to do with the battery being replaced, or is that just a coincidence?

It seems unlikely but we cannot know for sure. You have done everything we can think to troubleshoot. I suggest you make an appointment at the Genius Bar at the store that did the battery replacement. Let them run diagnostics and try to figure this out. Good luck. And please let us know the resolution.

Genius Bar Reservation and Apple Support Options - Apple (UK)

Thanks for letting us know the issues were resolved ... and how they were resolved. This could help others. That is what this community forum is all about ... Apple users helping other Apple users! We are happy to help.

Well that’s fascinating, as you said you had performed the toggle after I suggested it. (Well, actually you implied you did the toggle, as I suggested toggling and force restarting if the toggle failed, and you acknowledged the restart).

Anyway, glad it’s working.

Enjoy your Apple gear. Thanks for posting the resolution.

Check Settings > General > Date & Time > Set Automatically = “on”.

Try toggling it (off, then on again).

If that doesn’t solve it, try:

Force Restart iPhone

Do you have Settings > Privacy & Security > Location Services > Location Services turned “on”? That is required.

You also need a cellular or Wi-Fi connection.

Never mind. You replaced the battery at an Apple Store, which is what I had questioned here previously. Follow Carol B.’s excellent advice.