Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.

Chrisjmv

macrumors 6502
Apr 9, 2016
325
72
Did anyone made a DFU Restore and had success so far on an iPhone 15PM with better battery life after that?
 

thadoggfather

macrumors P6
Oct 1, 2007
16,109
17,030
For the year+ I’ve had 14PM not sure if I’ve tried LPM for a full day. On iOS 16.1 after 18 hours and still at 58%. Supposedly 90% health

This is just remarkable. Not sure I wanna roll the dice with iOS 17 and it’s battery life just yet


1698805471488.png
 

prefuse07

Suspended
Jan 27, 2020
895
1,073
San Francisco, CA
Did anyone made a DFU Restore and had success so far on an iPhone 15PM with better battery life after that?

I performed a DFU Restore on a 2020 SE and got significantly better battery life on 17.0.3. Then I updated that phone to 17.1 (when the full version released) but have been having worse battery life... 17.1 is just garbage in that department.

I am hoping they fix battery life with 17.2. Hoping, but knowing apple, it will probably continue to be trash as they seem to only focus on adding shiny bs and not fixing the important things.
 

Brooke795

macrumors 6502a
Feb 17, 2016
868
1,389
San Diego
So idk if the battery health number is a bunch of crock or what. But I’m at 90% battery health on my 14 pro max and I was at Disneyland. All. Day. Long. I’m home now but I’ve been out for darn near 17 hours and I’m still at 45% battery. I got out of the car (only 1.5 hr drive for me to Disney) at 8 am and my battery was at 100%. It is now 12:42 am next day. Didn’t charge it at all at Disneyland and I’m still at 45%. With games and using the app etc.

Starting to think that battery health percentage is just to freak people out. My phone works flawlessly.
 

FeliApple

macrumors 68040
Apr 8, 2015
3,684
2,088
So idk if the battery health number is a bunch of crock or what. But I’m at 90% battery health on my 14 pro max and I was at Disneyland. All. Day. Long. I’m home now but I’ve been out for darn near 17 hours and I’m still at 45% battery. I got out of the car (only 1.5 hr drive for me to Disney) at 8 am and my battery was at 100%. It is now 12:42 am next day. Didn’t charge it at all at Disneyland and I’m still at 45%. With games and using the app etc.

Starting to think that battery health percentage is just to freak people out. My phone works flawlessly.
It’s almost the latest iPhone on almost its original iOS version (if it’s on iOS 17), it’s a Pro Max, and it’s at 90% health, not 10%. I don’t know why you’re expecting it to be garbage.

Battery health is irrelevant if the device isn’t updated enough, and one major version is definitely not enough.
 
  • Like
Reactions: Brooke795

Mic2904

macrumors 6502a
Mar 22, 2011
516
118
So the battery issues are still there... Missus has been at work since 5am and at 9am she is down to 63% without even using her phone. How is that possible?
She was not on Beta program, but signed her up last might to get a new Software to hopefully fix it.
Next option would be a full reset, which is annoying because you have to update the wallet again and all that stuff...
Is there any other alternative... other than carrying a battery pack?!
 

Paul_W

macrumors regular
Jun 8, 2016
117
56
Rutland, UK
Did a hard reset on my 11 and then charged to 100%. After 3 hours in my pocket it is now on 99%. Hopefully it’s sorted now then
 

pali2704

macrumors newbie
Mar 29, 2013
9
-1
IMG_0304.png
For me, on my iPhone 15 PM battery was fine on iOS17.1 for about 2 days. It was better than 17.0.3. Something happened and on the 3rd day it's way worse!
 

Attachments

  • IMG_0310.png
    IMG_0310.png
    320.3 KB · Views: 60

Helmsley

macrumors 6502a
Sep 4, 2017
761
399
I got my iPhone 13 brand-new in April this year. Battery health is still on 100% (heavy-user). Honestly, I haven't noticed any issues with battery life at all over the iOS releases since April.
 
  • Like
Reactions: Tomas1988

LouisPiper

macrumors member
Jun 8, 2021
74
182
Did anyone made a DFU Restore and had success so far on an iPhone 15PM with better battery life after that?
I have not had great success with this. I tried a reset all settings and set up as new and got ~5.5 hours screen on time (ending the day at 16%) the next day. I then DFU restored to 17.1 final, again set up as new and let it download (500Mbps WiFi), before plugging in and letting it sync all evening (around 8 hours). During this time I did toggle on Messages in iCloud and pair my watch so they could sync overnight as well.

I am currently at 63% after unplugging at 9 AM; 2 hours and 20 minutes screen on, 1 hour and 32 minutes screen off. So that’s 7 hours total unplugged, 2.5 hours use and 37% loss. At that math the battery on a fresh install of 17.1 on an iPhone 15 Pro Max will be 6.9 hours - absolutely terrible.

The 14 Pro Max that’s been in the same conditions today his 3.5 hours screen on time, 2 hours screen off, and it’s at 85%.

My 11, 13 Pro, 14 Pro Max, and I think the 12 mini got better battery than this phone.
 
  • Like
Reactions: Tomas1988

Kyriakosss4

macrumors regular
Sep 16, 2021
194
168
I have not had great success with this. I tried a reset all settings and set up as new and got ~5.5 hours screen on time (ending the day at 16%) the next day. I then DFU restored to 17.1 final, again set up as new and let it download (500Mbps WiFi), before plugging in and letting it sync all evening (around 8 hours). During this time I did toggle on Messages in iCloud and pair my watch so they could sync overnight as well.

I am currently at 63% after unplugging at 9 AM; 2 hours and 20 minutes screen on, 1 hour and 32 minutes screen off. So that’s 7 hours total unplugged, 2.5 hours use and 37% loss. At that math the battery on a fresh install of 17.1 on an iPhone 15 Pro Max will be 6.9 hours - absolutely terrible.

The 14 Pro Max that’s been in the same conditions today his 3.5 hours screen on time, 2 hours screen off, and it’s at 85%.

My 11, 13 Pro, 14 Pro Max, and I think the 12 mini got better battery than this phone.
It’s not the phone, it’s the software. My 13 pro max was perfectly fine on 16.6.1 before ruined by ios17
 

FeliApple

macrumors 68040
Apr 8, 2015
3,684
2,088
I have not had great success with this. I tried a reset all settings and set up as new and got ~5.5 hours screen on time (ending the day at 16%) the next day. I then DFU restored to 17.1 final, again set up as new and let it download (500Mbps WiFi), before plugging in and letting it sync all evening (around 8 hours). During this time I did toggle on Messages in iCloud and pair my watch so they could sync overnight as well.

I am currently at 63% after unplugging at 9 AM; 2 hours and 20 minutes screen on, 1 hour and 32 minutes screen off. So that’s 7 hours total unplugged, 2.5 hours use and 37% loss. At that math the battery on a fresh install of 17.1 on an iPhone 15 Pro Max will be 6.9 hours - absolutely terrible.

The 14 Pro Max that’s been in the same conditions today his 3.5 hours screen on time, 2 hours screen off, and it’s at 85%.

My 11, 13 Pro, 14 Pro Max, and I think the 12 mini got better battery than this phone.
That’s extremely poor. 7 hours on an original iOS version... you have to go back to 4.7-inch iPhones to see numbers like those.

Are you a heavy user by any chance?

Your 15 Pro Max on its original iOS version should have no problems and should easily surpass something like this:
1460BF78-789B-4C62-BEC9-A37134A99340.png
 

Brooke795

macrumors 6502a
Feb 17, 2016
868
1,389
San Diego
It’s almost the latest iPhone on almost its original iOS version (if it’s on iOS 17), it’s a Pro Max, and it’s at 90% health, not 10%. I don’t know why you’re expecting it to be garbage.

Battery health is irrelevant if the device isn’t updated enough, and one major version is definitely not enough.
Not expecting it. Just general consensus (vast majority of users discussing this topic anyway) seems to equate anything less than 95percent to horrible degradation. Idk why you jumped all over my reply. I was trying to insinuate that the health meter doesn’t mean much. ☺️
 

LouisPiper

macrumors member
Jun 8, 2021
74
182
That’s extremely poor. 7 hours on an original iOS version... you have to go back to 4.7-inch iPhones to see numbers like those.

Are you a heavy user by any chance?

Your 15 Pro Max on its original iOS version should have no problems and should easily surpass something like this: View attachment 2305790
No games, no music, no downloads - just safari and Apple Books, about 15 minutes of instagram, today. We’re traveling, so when I wasn’t driving I was just browsing.
 

Attachments

  • IMG_0047.png
    IMG_0047.png
    101 KB · Views: 73

FeliApple

macrumors 68040
Apr 8, 2015
3,684
2,088
Not expecting it. Just general consensus (vast majority of users discussing this topic anyway) seems to equate anything less than 95percent to horrible degradation. Idk why you jumped all over my reply. I was trying to insinuate that the health meter doesn’t mean much. ☺️
Yeah, my reply came off a little bit aggressive now that I was it again and it wasn’t my intention, sorry!

Completely agree, battery health is completely irrelevant, especially when it’s not updated.
 

FeliApple

macrumors 68040
Apr 8, 2015
3,684
2,088
No games, no music, no downloads - just safari and Apple Books, about 15 minutes of instagram, today. We’re traveling, so when I wasn’t driving I was just browsing.
3h 47 min of screen-on time with 38% remaining, with iBooks (the lightest on-screen app I’ve found) as the second most-used and Safari the most used is one of the poorest results I’ve ever seen, especially on a Pro Max.

I truly hope you find a solution!
 

Claudia P

macrumors regular
Apr 22, 2016
122
127
I took my 15 PM off the charger at about 10:30 Monday night it was charged to 100%, last night I decided not to charge it since it was at 87%. I just put it on the charger about 15 minutes ago and it was at 63%. Granted I'm not a heavy user but I just got about the same in 2 days as I would get on my 13 Pro in one day. I'm pretty impressed.
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.