iPhone 14 Health and Fitness apps performance after updates to iOS 26

Sitz737 wrote:

I have noticed there are 30 instances of "iphone" and 2 of "xxx iPhone 14" under Health-Data Access & Devices-Sources but there is no option to delete redundant entries. IF entries show anything when selected it is typically "no data".

The Apple Watch pairing status can directly influence what shows up under Health → Data Access & Devices → Sources:

• Watch pairing behavior

Since an Apple Watch can only pair with one iPhone at a time, if your Watch Series 9 wasn’t paired properly or was switched between devices, HealthKit may create multiple “iPhone” source entries. The watch’s data won’t sync across all iPhones — only the one it’s actively paired with.

• Impact on sources

Each time the watch is paired, unpaired, or re‑paired, iOS may log a new “iPhone” source entry. If the pairing wasn’t clean, you’ll see “ghost” entries with “No Data,” because the watch never actually transferred health metrics to that source.

• ✅ What to check
  • On your iPhone, go to Watch app → General → About to confirm the watch is paired with the intended device.
  • If pairing looks inconsistent, unpair and re‑pair the Watch with the correct iPhone. This forces HealthKit to establish a fresh, valid source.
  • After re‑pairing, only the active iPhone should continue to receive watch health data; the redundant “No Data” entries will remain but won’t affect functionality.

So, the clutter you’re seeing is partly from iOS’s conservative logging and partly from watch pairing events. The practical fix is to ensure the Watch 9 is paired cleanly with the iPhone you actually use for Health, and ignore the empty sources.

Sitz737 wrote:

Sync between Apple Watch 9 and 11 is responsive.

I would unpair and re-pair the Watch

Put your Apple Watch on your wrist. · To turn on your Apple Watch, press and hold the side button until you see the Apple logo. · Hold your iPhone near your Apple ...Read more

Set up and pair your Apple Watch with iPhone

Sitz737 wrote:

OMRON Connect app connected by Bluetooth to BP-7450 blood pressure cuff and SC-150 scales has also been slow to respond or freezes since the updates.

The app developer may not have updated their software to ensure compatibility with the iOS version your device is currently running.

If you encounter any challenges with third-party applications, the best course of action is to directly contact the app developer for further assistance. Here's a brief guide on how to do it:

1. Identify the app developer.
2. Visit their website or app store listing.
3. Look for their contact information or support channels.
4. Clearly describe the issue you are facing.
5. Provide any necessary information they may need.
6. Follow their instructions and provide feedback.
7. Be patient and follow up if needed.

By reaching out to the app developer, you increase your chances of receiving accurate and personalized support for the challenges you're experiencing. To contact an App developer --> How to contact an app developer - Apple Support

Sitz737 wrote:

Battery life has drastically reduced and back of phone is noticable hotter since updates though probably due in part by hours spent attempting to solve these issues.

The measure of battery health deterioration/drainage is subjective and can vary depending on individual usage patterns. There is no universal standard to determine whether the battery health deterioration/drainage is normal or abnormal because it heavily relies on how the battery is used and maintained.

Protect & Prolong the Life of your iPhone's Battery:

1. About the battery usage on your iPhone, iPad, and iPod touch ...
2. Batteries - Maximising Performance - Apple (IN)
3. iPhone Battery and Performance
4. About Charge Limit and Optimised Battery Charging on iPhone - Apple Support (IN)

• Find out what to do if Optimised Battery Charging doesn’t activate.
• Find out what to do if your device stops charging unexpectedly.
• Find out what to do if you think your battery is draining too quickly.
• Find out how to charge and maintain your iPhone battery.

Try to monitor Battery usage by iPhone Activity as shown below

What is shown under battery usage? Checking that would give you an indication of the usage behavior.

1. Background Activity
2. Notifications
3. Connected to Charger
4. Or any Other

Try some of these options too.

To prolong the life of your iPhone battery, you can follow these tips and best practices:

To prolong the life of your iPhone battery, you can follow these tips and best practices:

1. Optimize Battery Charging: Enable the "Optimized Battery Charging" feature on your iPhone. It helps reduce the wear on the battery by slowing down the battery aging process. You can find this option in Settings > Battery > Battery Health. About Optimized Battery Charging on your iPhone - Apple Support (IN)
2. Avoid Extreme Temperatures: Extreme temperatures, both hot and cold, can negatively impact your battery life. Avoid exposing your iPhone to excessive heat or cold, such as leaving it in direct sunlight or in a freezing car.If your iPhone or iPad gets too hot or too cold – Apple Support (UK)
3. Use Original Chargers and Cables: Always use Apple's original chargers and cables or certified third-party accessories. Low-quality chargers or cables can damage the battery and reduce its lifespan. Identify counterfeit or uncertified Lightning connector accessories - Apple Support (IN)
4. Avoid Draining the Battery to Zero: Charge it whenever the charge becomes lower than 20%. The rest is up to you when to charge. how long to charge, how often to charge, which adapter to use starting from 5W to 140W USB-C Power Adapter etc.
5. Optimize Display Settings: Adjust your display settings to optimize battery life. Lower the screen brightness, enable auto-brightness, and use shorter screen timeout durations. Adjust the display and text size on iPhone - Apple Support (IN)
6. Minimize Background App Refresh: Limit the number of apps allowed to refresh in the background. Go to Settings > General > Background App Refresh and disable it for apps that don't require real-time updates. Switch apps on your iPhone, iPad, or iPod touch - Apple Support (IN)

Not every issue an individual encounters on their device can be attributed to an iOS update. If the update itself were the root cause, then every device running that same version of iOS would exhibit the identical problem. In such a scenario, the forums would be flooded with countless posts reporting the same malfunction, creating an unmistakable wave of complaints that no one could possibly overlook. The absence of such widespread reports strongly indicates that the issue is not systemic, but rather specific to the device in question.

Open the Apple Watch app on your iPhone, tap the My Watch tab, then tap All Watches at the top of the screen. Tap the “i” button I button next ...Read more

If you can't pair an Apple Watch with your iPhone