How to Fix Apple Watch Heart Rate Monitor Not Working

Let’s be honest: the heart rate monitor on your Apple Watch sucks. That’s probably why you’re here anyway. For people with heart conditions such as Arrhythmia, it’s important to keep track of your heart rate. It is even more crucial to have a device that can accurately record these data. Unfortunately, the Apple Watch is not one of them.

With reports of inaccuracy, missing data, and fail to monitor heart rate at a certain time, many users are on the verge of returning their Apple Watch.

Before you do that, though, it doesn’t hurt to follow a few simple tricks below to get the heart rate monitor on the Apple Watch to work again or at least a bit better than before. I hope these fixes will help.

How to Fix Apple Watch Heart Rate Monitor Not Working 1

Unreliable Heart Rate Reading

When going on a long, some will expect the activity app to show an in-depth chart of their exercises and heart rate reading upon returning. It turns out; there was not enough heart rate data being recorded in the Activity app.

This is a known issue that Apple sometimes addresses. Fixing this problem shouldn’t be too complicated.

Make sure you’re not wearing your Apple Watch too loosely. This can affect the sensor in the back. Before a workout, check the band and tighten it. When the exercise is over, you can lose it up a bit. In addition to tightening your Apple Watch, you should also clean the sensor (and the back) so that it can give a better result.

Activity App Not Recording Heart Rate

Yes, you can expect to have this problem where the Activity app will not record your heart rate AT ALL. Sure, the Apple Watch still measure your current heart rate, but when you tap “Done” the app doesn’t log it.

If the heart rate is not being recorded on your Apple Watch:

  1. On your iPhone, open the Watch app
  2. Go to My Watch > Privacy
  3. Enable Heart Rate and Fitness Tracking

How to Fix Apple Watch Heart Rate Monitor Not Working 2

Also, turn off Power Saving Mode from the Workout setting page.

Heart Rate Inconsistency

Sometimes you record your heart rate twice, and they both show a completely different result. There have been a few cases where the quality of your heart rate can vary. Even Apple confirmed that the Apple Watch wouldn’t be able to show an accurate heart rate every time.

At this point, there is no specific solution to this. What you can do is try again and again until the readings are similar to each other.

Note: Some Apple Watch users experienced poor heart rate quality after updating to watchOS 4.

Heart Rate Sensor Not Working

How to Fix Apple Watch Heart Rate Monitor Not Working 3

If the Apple Watch does not measure your heart rate due to issues with the sensor, there are a few things you need to do.

  1. Check to see if the green LED light on the sensor is visible.
  2. Are you wearing your Apple Watch tight enough?
  3. Turn on Wrist Detection from the Settings page.
  4. Are there anything on your wrist that could affect the performance of your Apple Watch’s sensor?

The watch may display an unreliable data, but when it shows nothing at all, then we have a serious problem. If you believe this has to do something with the hardware, please contact Apple.

If the Apple Watch isn’t the perfect fit for you, there are other alternatives that deserve some attention.


  1. david w young
  2. Allen
    • Pete

Leave a Reply

Do NOT follow this link or you will be banned from the site!