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Can I unpair then pair with a backup?
yah, this is what Apple are suggesting. I am doing this now - only info you have to add back (which is a pain) is Apple Pay details.
If I unpair and pair as new it seems like I would need to put all my info back in or will it get all the info from the iPhone
You can put back all your settings and apps but you will lose all your health data.
 
Just confirmed with Apple that if you set up as new you will lose all your health data...what a terrible update! Rendered my once perfect watch useless in a crap update.
Health data is stored in the cloud.

Here's what your Apple Watch backup includes
App-specific data (for built-in apps) and settings (for built-in and third-party apps). For example, Maps, distance, units, and your settings for Mail, Calendar, Stocks, and weather.
App layout on the Home screen
Clock face settings, including your current watch face, customizations, and order
Dock settings, including the order, whether you sort by favorites or recents, and available apps
General system settings, such as brightness, sound, and haptic settings
Health and Fitness data, such as history, awards, Workout and Activity calibration data from your Apple Watch, and user-entered data (To back up Health and Fitness data, you need to use iCloud or an encrypted backup on your computer.)

 
I don't know what happened but on my 5 the first day was normal, I had around 50% at the end of the day and then the next day I had 1% 3 hours before I go to bed. This NEVER happend in the year I have this watch. I enabled the had washing notification though. Maybe that is the problem? I have no idea how to turn it off though. I can not find the option in the iPhone health app anymore.
I updated my series 5 to wOS 7 first day it was available, my watch had died before bed every single day. I use to have a white watch face and a decibel meter on my watch face which I’ve disabled to try and save some battery but no luck. I use to end days with about 30-40%. I’m not doing workouts or anything.
Anyone who has not updated, just don’t even bother. A few years ago I use to run every beta of iOS and watchOS, these days I feel like I’m never updating past the OS that comes installed on these damn devices. My 1 year old $400 watch became dog **** with this damn update.
 
S4 watch, installed OS7 day one. Battery life terrible, dead by 5PM. OS6 would show approx 40% battery at midnight.
Re-paired, battery life still terrible. Re-paired a second time back to OS6 levels.
Still can't get 'Unlock Mac with watch' to work. Tried methods in this thread but no luck.
 
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S4 watch, installed OS7 day one. Battery life terrible, dead by 5PM. OS6 would show approx 40% battery at midnight.
Re-paired, battery life still terrible. Re-paired a second time back to OS6 levels.
Still can't get 'Unlock Mac with watch' to work. Tried methods in this thread but no luck.

How did you re-pair your watch? Did you restore from the latest backup? (I.e the one that gave you bad battery life.) I am having no luck re-pairing... I’ve done it like 4 times and still bad battery life.
 
Whenever I start playing music on iPhone or AW, the battery drain is high. More dramatic is the battery drain after I stop playing music. My suspicion is that "Now playing" is taking a lot of battery.
 
Just confirmed with Apple that if you set up as new you will lose all your health data...what a terrible update! Rendered my once perfect watch useless in a crap update.
It's false.
Health data is in iCloud and is managed by your iPhone
 
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How did you re-pair your watch? Did you restore from the latest backup? (I.e the one that gave you bad battery life.) I am having no luck re-pairing... I’ve done it like 4 times and still bad battery life.
Yes, restored from the WatchOS update/backup that was giving terrible battery life.
First day after second re-pair was better, next day back to OS6 battery life.
Maybe wear it and give it a few charging cycles to see if it improves.
We might have to wait until apple release OS7.01 for all the fixes, good luck.
 
I just did the re-pair thing. No issues, data is still there. Fingers crosses that it helps. I am going to an Apple Store today to change my iPhone battery so I will ask them there too if they know anything about that issue.
 
Just confirmed with Apple that if you set up as new you will lose all your health data...what a terrible update! Rendered my once perfect watch useless in a crap update.

My ECG app has gone AWOL.
Apple support totally useless
Cannot be found on the Watch App Store either
 
My ECG app has gone AWOL.
Apple support totally useless
Cannot be found on the Watch App Store either

If you can't find the ECG app on your watch, try opening the Watch app on your iPhone and opening the Heart section. This should trigger the option for you to set up/install ECG if it's not already set up. The same thing happened to my mum's watch this week.
 
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Just confirmed with Apple that if you set up as new you will lose all your health data...what a terrible update! Rendered my once perfect watch useless in a crap update.

This isn't true. I set up my new Series 6 as new and I still have access to all my health data. The important thing, I believe, is to make sure you properly unpair your previous watch from your iPhone before setting up the new one. In the Watch app (on your iPhone), you can click "All Watches" and then, next to your current watch, press the little "i" icon. If you do that, and unpair from there before setting up a new one, you should be fine. I remember coming across this a few years ago and I've had a few watches since then. I always set up as new and I haven't lost any health data yet. Also, I helped my mum set up a new Series 6 this week after upgrading from a Series 3 and, doing the same process, all her health data is still there, despite setting up as new.

Oh, and also make sure that Health is checked in the iCloud section of your Apple ID screen in your iPhone settings.
 
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If you can't find the ECG app on your watch, try opening the Watch app on your iPhone and opening the Heart section. This should trigger the option for you to set up/install ECG if it's not already set up. The same thing happened to my mum's watch this week.

I’ve tried that. No luck. Thanks for the suggestion
 
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Seems rediculous to have to do this and my heart-rate complication is now a button to tap, a shortcut essentially, whereas before it was the most recent reading.

What watch face and heart-rate complication are you using? Mine has always been a shortcut (ie it has never showed a reading). I use the Meridian face with the default Heart Rate complication.
 
Yes it was good until yesterday. Died in less than 12 hours. Was never dead before when I woke up. Didn't do anything excessive on it, and didn't see the battery warning at bedtime. Will have to take note of the % this time when I go to bed.
 
I am seeing something similar. After 10.5 hours of use so far today (5am-3:30pm), I hit 10%. Normally by 10pm (17-18 hours), I still have 30-40%.

That is a huge difference and the only change was Watch OS 7 on a Series 5.

I came her to ask if anyone else was seeing it, and lo and behold, this was at the top.

edit:
1. I was reading that in the betas, people were suggesting that you turn off the hand washing feature to improve battery life. The consensus then was that it helped some people, but not others. Of course, my hand washing wasn't even on - so that wasn't it for me.

2. I am going to try the press and hold down both the digital crown and the side button at the same time until it reboots and charge it for 30 minutes and go from there.

3. I do NOT want to do the unpair or set up as new if possible.
Yea must be hand washing because I turned that on yesterday, and woke up for the first time to a dead watch. Why would it drain it so bad? Just because it is always waiting for a certain movement and/or it just isn't optimized? Or does it keep detecting it if you move a certain way in your sleep? You would think once it goes into sleep mode though all those monitors would disable.
 
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Yea must be hand washing because I turned that on yesterday, and woke up for the first time to a dead watch. Why would it drain it so bad? Just because it is always waiting for a certain movement and/or it just isn't optimized? Or does it keep detecting it if you move a certain way in your sleep? You would think once it goes into sleep mode though all those monitors would disable.

I found hand washing didn’t make a difference on my battery wear.

Only thing that worked was unpair/re pair from back up.
 
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Re-Pair fixed my horrible battery drain issue, was about 5x worse!

Have followed the steps to re-enable auto unlock on Mac but it fails to turn on, which is annoying, as I really liked that feature.
 
I’ve had a 11 hour (max) battery life after updating to watch OS7. I’ve called apple support, and after 90minutes on the phone we worked out the solution. Like more people do; unpair your watch, reinstall as a new watch. Now I have 20% battery drain in 6 hours. Before I’ve had like 60% loss in that time. So that did the trick.
 
8 hours today and still at 70%

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That's exactly what I found. My battery life was awful yesterday, but today it's pretty much where it was with WatchOS 6. I installed WatchOS 7 on the 17 September.

On the whole with a few days more use I definitely am finding WatchOS 7 is giving me significantly worse battery life than on WatchOS 6. Hopefully after a software update or two, battery life will be on level with WatchOS 6.
 
Battery life much worse for me also. Had 2 watch friends today tell they are below 20% at 8pm. Normally they’d get 2 days. I’m on 40% at 9pm. Normally go to bed on 70+%
 
I don’t know if this will help anyone, but a couple of things that drastically helped battery life:
  • Remove the compass app from your iPhone - that removed the altimeter and compass on the watch which is a battery sucker
  • Turn off motion in accessibility so the fancy animations are off
  • Turn of background refreshes on apps you don’t need (do this on the Watch app)

    Made a big difference on my watch!
 
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Add me to the list. Never had a battery issue going 6am to 10pm but past few days after the update I’m getting the 10% warning around 4 or 5pm. I’m on a series 4 and do use the workout app and music most days.
 
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