Today I needed to change my sensor, libre 2 plus. So I downloaded IOS26 onto my iPhone 14 an hour before the change was due. It worked perfectly no problem! I then changed the sensor as usual and bingo no problem either. Just thought this may be useful info for those asking
I hesitated for ages before updating to IOS 18. I did so last month on a day when I was changing the sensor, No problem, works like a charm and didn’t lose any info on the LibreLink apps. I have an iphone18