I updated my os to 26 and it deleted all my personal calendar items. I’ve tried toggling calendar and restarting my phone. This happened during the last update, too. I need a fix instead of re-entering all my dates every time I update.
iPhone SE, iOS 26
Next time you update, ensure you backup your iPhone before updating, you can read this Apple Support Article to learn how to Backup you iPhone. Back up iPhone - Apple Support and How to back up your iPhone, iPad, and iPod touch - Apple Support, if this does not work next time you update I would contact Apple Support unless someone else in the community has some sort of solution I’m not aware of.
Calendar deleted upon OS update
