iOS 17.4 and watchOS 10.4 impacting battery life and heating issues

I was having the same issue! It literally felt like it happened overnight because my watch was fine the day before. My watch was at 86% around 10/11am and by 1pm my watch was at 15%. I don’t really use my watch at work besides checking the time or seeing when I have a notification so the battery drain was ridiculous. I did the unpair and repair but that didn’t work for me. When I did the force restart (holding down side button and Digital Crown) plus turning off the “Always on” and “Background app refresh” option, my watch has been holding a charge. Went to bed with 99% and woke up at 92%.

Genius Bar check told me that there were many background looping. Resolved by hard resetting both watch and iPhone.

UPDATE: ran a second hard reset and seems to be ok now.

I tried hard resetting both my Ultar 2 and my iPhone 14 Pro and that fixed the battery drain problem. The watch is now back to normal battery usage.

Reset your apple watch and set as new watch. It fixed the draining issue.

Same problem. Resolved by Genius Bar personnel by having both watch 7 and iphoneXR hard reset.

I’ve been having similar issue after 10.4 upgrade with my Apple Watch Series 9. My nephew mentioned to me same thing. At this point I’ve taken just about all 3rd party apps off to see, but I only had a small handful. I don’t leave the screen on all the time (only on wrist movement). I had it charged to 100% by 1 pm today before I went out and it’s at 41% at 8:07 pm. No workouts today, music or anything. Just been on my wrist and hardly used. Enough to say the watch isn’t too usable now. I need to charge it before bed and in tha AM again since I use it for sleep tracking. When I first got the watch at Christmas time, I didn’t do much with it and would have 70-75% battery life at the end of the day. Was fairly confident I could have gotten a full 2 days of light use if needed. Now I doubt it will get to 18 hours and doesn’t work out well if I keep it on for sleep all night.

Similar here. iPhone 14 Pro Max is now on 17.4.1 and Apple Watch 9 is on watchOS 10-4. Two days in and my watch (battery health at 97%) went from 100% at 8am to completely dead by 3pm. I charged it to 88% and it was dead again by 9pm. Charged to full and was down nearly 20% within an hour. I had a call with Apple support and went through diagnostics and all of the usual “try turning off background app refresh, etc.” No help. To be honest, we shouldn’t have to do that. I had this happen once with a previous Apple Watch and it was ultimately fixed with a subsequent update. I’m guessing that’s what it’ll take now… if enough people are complaining about it, they’ll sort it out.

I also have this issue on both watchOS 10.4 and iOS 17.4

My Ultra 2 is draining at 30% in 5 hours of just sitting at my desk, the phone is slightly better. I opened a case with AppleCare (not ever expecting an answer) and with the beta program. We'll see what happens, but rebooting and rebuilding/re-pairing do nothing to fix the problem.

I welcome any tips on what to try next.

Battery drain after upgrade, Apple 9 bought last Sept, went to Apple Store twice and not fixed. Eventually they said it is a known problem. It is not acceptable still no patch out for more than a month.

no surprises that the sales dropped

Jkgerding wrote:

I am having the same issue withy my iWatch. I have had to put my watch in low power mode and even then within 12 hours I only have less than 10% left. I’ve tried resetting the watch as suggested with no luck. My overall battery health is 83% so this should not be happening. Help!

83% is pretty close to end of life for the battery. I suggest you contact Apple and have them run diagnostics. They can determine more precisely what at the overall battery health is. You may need a new battery.

Product Feedback - Apple

After updating ios 17.4 in my iPhone 14 pro max I’m facing serious heating issue.

my hands are literally burning while using phone and battery is draining so quickly.

17.4 is worst update till im using this phone.

I too am running iOS 17.4 on my 15 pro max watchOS 10.4 on my ultra 2 and am losing 10% per hour on my watch battery. I could go the whole day and do a workout and have 70% left. Now I have 20 at the end of the day. And it won’t let me charge unless I override the save the battery feature.

Just updated my watch to 10.4 and within 2 hours I’ve lost 18% of my battery life. The last two updates have ruined battery life and make the watch entirely useless since it won’t even last from when I put it on in the morning to the end of the work day. Two/three months ago it would last between 48-60 hours on a single charge. My wife is having the same problem so I know it’s not my battery crapping out all of a sudden. This is absolutely ridiculous.

Same here, I just searched in google to see if I’m the only one having this issues !! My iphone 15 pro max is getting super hot even I can feel the hot with my thick case on it !! Apple please address this issue immediately. I never had this issue since I purchased it back in November .