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Battery losing 3% after every restart

F

FAILGATE

macrumors newbie
Original poster
Sep 25, 2025
8
0
Hi, I currently have the iPhone 17 Pro Max on iOS 26.0 (23A345) and been noticing that if I restart the phone I seem to lose 3% battery. Then some time after like 15 minutes or so I would restart the phone again and it will lose another 3% battery. But if I don’t wait some time before restarting again then sometimes it will lose 1% battery or nothing at all.

Anyone with the 17 Pro Max could you please test this and see if you are also experiencing the same thing? Kind of worried now as I just bought this phone and I hope nothing is wrong with the phone itself and it’s an iOS problem?


EDIT:
I also have noticed when my phone is around 50-60-70% battery using my phone on Safari via wifi connection and just browsing and scrolling through forums and Reddit pages I lose about 1% battery every 5-6 minutes.

Wondering if anyone else is also losing 1% battery every 5-6 minutes while browsing and scrolling on Safari when their battery is around 50-60-70%? Battery drain is way too quick.

Trying to confirm if there is something wrong with my iPhone or if it’s simply an iOS bug?
 
Last edited:
Most likely this is just due to the fact that the phone is so new. Your phone hasn’t been used enough to properly have a calibrated battery. It might even stay at 100% for a long time off the charger, but that is not accurate. When you reboot, the battery status catches up to its real world status. It didn’t lose anything, it is just reassessing how much battery life remains and updating the software to reflect that.

But as others have said… stop rebooting the phone. Should only need a reboot for software updates.
 
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Mercenary said:
You need to give us a bit more detail than that my dude. As in all the years I’ve had an iPhone I can recall probably 2 times I had to force a restart.
Click to expand...
I’ve rarely had to do a forced restart, but many, many instances of apps not responding or not functioning properly, including Apple’s native apps. Occasionally, a frozen screen, Safari misadventures, any number of such issues. I’ve never seen any electronic device, especially a network-connected device, that didn’t have to be occasionally restarted. I have a weekly reminder to restart all my devices, including my router, as it sometimes acts up. And as discussed on this forum any number of times, a restart sometime after a new iOS installation clears a lot of issues. I’ve never seen any reason for doing such a thing, but there was a fairly recent thread where someone was saying he restarted his phone every day. That’s way too extreme, but I imagine most people restart at least occasionally.
 
papbot said:
I’ve rarely had to do a forced restart, but many, many instances of apps not responding or not functioning properly, including Apple’s native apps. Occasionally, a frozen screen, Safari misadventures, any number of such issues. I’ve never seen any electronic device, especially a network-connected device, that didn’t have to be occasionally restarted. I have a weekly reminder to restart all my devices, including my router, as it sometimes acts up. And as discussed on this forum any number of times, a restart sometime after a new iOS installation clears a lot of issues. I’ve never seen any reason for doing such a thing, but there was a fairly recent thread where someone was saying he restarted his phone every day. That’s way too extreme, but I imagine most people restart at least occasionally.
Click to expand...
Misbehaving apps I get. But I tend to bring up the task switcher an swipe it away. All problems solved. Easier to close than reboot.
 
I will reboot if the phone is running unusually warm during a beta cycle, but other than that I only reboot when I get the .1, .2, .3, etc.
 
Fraud Goblin said:
Why you restarting the phone so much lol
Click to expand...
Because I’m testing if my phone battery is faulty or not since I just bought it over a week ago.

I also have noticed when using my phone at 50-60-70% battery on Safari via wifi connection and just browsing and scrolling through forums and Reddit pages I lose about 1% battery every 5-6 minutes.

Wondering if anyone else is also losing 1% battery every 5-6 minutes while browsing and scrolling on Safari? Trying to confirm if there is something wrong with my iPhone or if it’s simply an iOS bug?
 
Last edited:
HouseLannister said:
Most likely this is just due to the fact that the phone is so new. Your phone hasn’t been used enough to properly have a calibrated battery. It might even stay at 100% for a long time off the charger, but that is not accurate. When you reboot, the battery status catches up to its real world status. It didn’t lose anything, it is just reassessing how much battery life remains and updating the software to reflect that.

But as others have said… stop rebooting the phone. Should only need a reboot for software updates.
Click to expand...
It’s been over a week since I had this phone. How long does it take for it to be normal then?

I have also noticed when my phone battery is at 50-60-70% battery and I am on Safari via wifi connection browsing and scrolling forum and Reddit pages I will lose 1% battery every 5-6 minutes. Clearly not normal. Wondering if others are experiencing the same on 17PM?
 
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