Fitness app in iPhone not updating activity

So I was having this issue and I could not find a solution. Getting desperate, I wondered if perhaps this was caused by a glitch with Apple Watch and new software. I deleted the watch from my phone and did a full reset and reinstall of the watch as a new Apple Watch. It was a pain to go through the process and pair again with my phone, but it appears to have solved the problem. Fitness/Activity again works after more than 3 weeks of being down.

I still have to power down my watch and phone to get the accurate information every day. It shouldn’t be such a production.

I have the same bug with the iPhone 15 Pro Max and IOS 17.3. I hike for over 5 miles, and normally, this would be over 500 calories, but the ring stopped at 280. The step count is 6908, but the health app shows 13894. I hope they fix this with 17.3.1.

I have the same problem. It is ‘unrewarding’ when you know you have achieve the reward and have gone beyond while your app is stuck at a reading much lower than you achievement and been stuck so for weeks and months. I wish there is a fix to this. The health app shows the calories, steps and distance as per my expectations whilst the fitness app does not update to these values. Very annoying.

I am having the same issue even though I have checked all settings, toggled them, restarted my phone, even deleted and redownloaded the app. It is still not functioning for me.

Yes, I had to completely reset my watch and resync it to my phone, and it has worked since!

iOS updates generally aim to enhance user experience, boost security, and fix bugs rather than disrupt core features. Fitness app issues after updates might stem from underlying, unmentioned factors. Updates won't typically alter personal data but may refine settings or features. Backup before major updates for safety. Review Apple's update details and backup advice for a smooth process.

Kindly consider checking your settings and addressing any device issues before attributing the issue to external factors.

See what each update does: About iOS 17 Updates, About iOS 16 Updates, About iOS 15 Updates, About iOS 14 Updates, About iOS 13 Updates, About iOS 12 Updates, and so on...

Given your IT/Tech background, let me express it more clearly:

Considering your expertise in IT/Tech, wouldn't all iPhone 15 Pro devices running iOS 17.3 be affected if there's indeed a bug? Additionally, if the bug does exist, the correction can only be implemented in the upcoming iOS update. Therefore, you'll need to patiently await the release of the next iOS update for the issue to be resolved.

Since the latest updates to watch and iPhone the Health app hasn't updated ANY of my walking information with the exception of V02max. Everything else is in the twilight zone... somewhere... doing something... perhaps someone in a different dimension is looking at their watch and scratching their head wondering "What is this data?"

Presently the fitness app on iPhone 15 Pro Max with latest update is not displaying the workouts in terms of Move/exercise progression. Additionally Fitness app does display the workouts I did today, but won’t show the icons for the particular workout performed. Buggy. I noticed this while working out at the home office.

I'm having this issue since I updated my iPhone 13 (and watch) yesterday... the Fitness app tells me it is not tracking, but I've checked the Privacy Settings - Motion & Fitness, and the Fitness Tracking (and Health) is toggled ON. I've had my watch on all day, and none of the rings have moved, and I can't start tracking an activity.

Been using this app on my watch now for almost 5 years, so it's a bit frustrating that I can't figure out how to correct this! (First image is from my watch - second is from my phone)