iPhone 12 battery draining fast

In My new 12 pro, I observe the below issues

1. charging is quite slow especially after 80%
2. Battery discharges quite fast even for a normal web browsing(no videos, just for a news website)
3. Battery takes a while to go down to 99% from 100%. But once it reaches 99%, it discharges very fast as said above.
4. No overnight draining issue for me though.

keeping fingers crossed for IOS 14.4. Contacted apple supprt for 4 to 5 times. But no luck. They are not ready to accept the issue. Pathetic!!!

Yes, I am also facing this issue. It happened to me twice so far within the first 2 weeks of using iphone 12.

First - 10% reduction overnight

Second - 12% reduction overnight

When I was sleeping, my phone state was in:

1. Low power mode - ON
2. Wifi and cellular data - OFF
3. Always listen to "Hey Siri" - OFF
4. Background apps refresh - Set to OFF for 90% of my apps
5. Zero apps running in the background

I have experienced same issues

• iPhone 12 brand new
• ~30% battery drain overnight

Tried adjusting many app, mail refresh, location settings etc. - didn’t help

Finally changing the cellular network from 4G to 3G reduced the battery drain to under 10% per night.

no need to tell you how disappointed I feel to buy 5G phone only to end up using it under 3G so that the battery is not trashed each night.

1. Not clear, but seems not limited by region
2. The issue resolves in Airplane mode with WiFi enabled (but Bluetooth off)
3. The issue persists in all possible combinations of eSim and physical SIM card

Having said that, it seems that EE customers suffer the least here in UK. At least I had no battery drain when I was on EE eSim (although I had bad cellular signal). So it depends on the combination of many things.

This would be my second post here regarding iPhone 12 pro 256GB in USA. I have had this phone for now 10 days. Initially, I had an issue with battery draining when it is completely idle for 7-8 hours, on wifi and data off at about 7-10%. I called Apple support and escalated this issue to engineering team. The reply was my battery was behaving way above average its life. Apple support told that it takes time for a new battery to adjust itself for new ios as well as the usage and charging habit of an individual. After that it will perform to its fullest capacity.

Then for the last 4-5 days, after I got reply from Apple, I have been observing battery while idle, using on only wifi on/off and also only data on/off, and both of them on at the same time. While in idle state for 7-8 hours, with wifi and LTE data on, it hardly drops 1-2%, so that's a much improvement. Then on usage with only wifi on and only data and with both on, I used the phone and it lasted 8-9 hours straight, battery drops from 100% to 17% till this usage. This includes Facetime (on data as well as wifi), whatsapp video call and texting, Facebook, Safari surfing, speedtest app, Apple inbuilt mail app to check emails, accessing photos, playing a light (less power consuming) game, regular phone calls, and other apps like banking, paypal, weather, news, and playing with settings and also just surfing the screen here and there. I didn't take any photos or videos in these 8-9 hours of usage.

I have regular postpaid sim card.

So I think you should allow your new iPhone to settle down a bit and get used to the new environment.

Few suggestions I found so far.

1. Apple told to charge the battery to 100% all the time. Heat also effects the battery life, so try to avoid using phone while charging and also avoid direct sunlight (it is likely to drain more in idle state in hot environment).
2. I also reduced the "white point" to 50% which is in settings --> accessibility --> display & text size all the way option. I didn't put on lower power mode until it switches automatically at 20%. Brightness during this usage was from 15% to 90%, most of the time it was 25%) as I was indoor.
3. Also turn on "dark mode" on whenever possible, especially at night. It will help white pixels OLED screen consume less power.
4. Other settings, I always keep privacy --> location services to never or while using app option for all the apps. Also turn off location for all the system services except Emergency calls & SOS and Find My iPhone. Also turn off Signification Locations under system services.
5. Background refresh is turn off completely.
6. Notifications are on for certain apps only otherwise off.
7. Turn off the push option for emails. Rather go for manual fetch for the all the emails you got or if you need push option then go for hourly fetching.
8. Avoid automatic icloud backup.
9. Avoid automatic updates of app.

I have had used iPhone 6 and 7 since 2015 and had these consistent settings on all my iPhones. This helped a lot.

Note: Apple should now concentrate more on performance rather than just design and display. It's 2021, we are on the electronic gadgets most of the time. Battery is going to be the main concern for all gadgets like gaming, laptops, phones, or even in that case electric cars Apple should change their conservative approach to more liberal Otherwise, competitors will be ahead in the race in coming years. I hope Apple don't lose its charm.

Hope this will help you all here.

This would be my second post here regarding iPhone 12 pro 256GB in USA. I have had this phone for now 10 days. Initially, I had an issue with battery draining when it is completely idle for 7-8 hours, on wifi and data off at about 7-10%. I called Apple support and escalated this issue to engineering team. The reply was my battery was behaving way above average its life. Apple support told that it takes time for a new battery to adjust itself for new ios as well as the usage and charging habit of an individual. After that it will perform to its fullest capacity.

Then for the last 4-5 days, after I got reply from Apple, I have been observing battery while idle, using on only wifi on/off and also only data on/off, and both of them on at the same time. While in idle state for 7-8 hours, with wifi and LTE data on, it hardly drops 1-2%, so that's a much improvement. Then on usage with only wifi on and only data and with both on, I used the phone and it lasted 8-9 hours straight, battery drops from 100% to 17% till this usage. This includes Facetime (on data as well as wifi), whatsapp video call and texting, Facebook, Safari surfing, speedtest app, Apple inbuilt mail app to check emails, accessing photos, playing a light (less power consuming) game, regular phone calls, and other apps like banking, paypal, weather, news, and playing with settings and also just surfing the screen here and there. I didn't take any photos or videos in these 8-9 hours of usage.

I have regular postpaid sim card.

So I think you should allow your new iPhone to settle down a bit and get used to the new environment.

Few suggestions I found so far.

1. Apple told to charge the battery to 100% all the time. Heat also effects the battery life, so try to avoid using phone while charging and also avoid direct sunlight (it is likely to drain more in idle state in hot environment).
2. I also reduced the "white point" to 50% which is in settings --> accessibility --> display & text size all the way option. I didn't put on lower power mode until it switches automatically at 20%. Brightness during this usage was from 15% to 90%, most of the time it was 25%) as I was indoor.
3. Also turn on "dark mode" on whenever possible, especially at night. It will help white pixels OLED screen consume less power.
4. Other settings, I always keep privacy --> location services to never or while using app option for all the apps. Also turn off location for all the system services except Emergency calls & SOS and Find My iPhone. Also turn off Signification Locations under system services.
5. Background refresh is turn off completely.
6. Notifications are on for certain apps only otherwise off.
7. Turn off the push option for emails. Rather go for manual fetch for the all the emails you got or if you need push option then go for hourly fetching.
8. Avoid automatic icloud backup.
9. Avoid automatic updates of app.

I have had used iPhone 6 and 7 since 2015 and had these consistent settings on all my iPhones. This helped a lot.

Note: Apple should now concentrate more on performance rather than just design and display. It's 2021, we are on the electronic gadgets most of the time. Battery is going to be the main concern for all gadgets like gaming, laptops, phones, or even in that case electric cars Apple should change their conservative approach to more liberal Otherwise, competitors will be ahead in the race in coming years. I hope Apple don't lose its charm.

Hope this will help you all here.

This would be my second post here regarding iPhone 12 pro 256GB in USA. I have had this phone for now 10 days. Initially, I had an issue with battery draining when it is completely idle for 7-8 hours, on wifi and data off at about 7-10%. I called Apple support and escalated this issue to engineering team. The reply was my battery was behaving way above average its life. Apple support told that it takes time for a new battery to adjust itself for new ios as well as the usage and charging habit of an individual. After that it will perform to its fullest capacity.

Then for the last 4-5 days, after I got reply from Apple, I have been observing battery while idle, using on only wifi on/off and also only data on/off, and both of them on at the same time. While in idle state for 7-8 hours, with wifi and LTE data on, it hardly drops 1-2%, so that's a much improvement. Then on usage with only wifi on and only data and with both on, I used the phone and it lasted 8-9 hours straight, battery drops from 100% to 17% till this usage. This includes Facetime (on data as well as wifi), whatsapp video call and texting, Facebook, Safari surfing, speedtest app, Apple inbuilt mail app to check emails, accessing photos, playing a light (less power consuming) game, regular phone calls, and other apps like banking, paypal, weather, news, and playing with settings and also just surfing the screen here and there. I didn't take any photos or videos in these 8-9 hours of usage.

I have regular postpaid sim card.

So I think you should allow your new iPhone to settle down a bit and get used to the new environment.

Few suggestions I found so far.

1. Apple told to charge the battery to 100% all the time. Heat also effects the battery life, so try to avoid using phone while charging and also avoid direct sunlight (it is likely to drain more in idle state in hot environment).
2. I also reduced the "white point" to 50% which is in settings --> accessibility --> display & text size all the way option. I didn't put on lower power mode until it switches automatically at 20%. Brightness during this usage was from 15% to 90%, most of the time it was 25%) as I was indoor.
3. Also turn on "dark mode" on whenever possible, especially at night. It will help white pixels OLED screen consume less power.
4. Other settings, I always keep privacy --> location services to never or while using app option for all the apps. Also turn off location for all the system services except Emergency calls & SOS and Find My iPhone. Also turn off Signification Locations under system services.
5. Background refresh is turn off completely.
6. Notifications are on for certain apps only otherwise off.
7. Turn off the push option for emails. Rather go for manual fetch for the all the emails you got or if you need push option then go for hourly fetching.
8. Avoid automatic icloud backup.
9. Avoid automatic updates of app.

I have had used iPhone 6 and 7 since 2015 and had these consistent settings on all my iPhones. This helped a lot.

Note: Apple should now concentrate more on performance rather than just design and display. It's 2021, we are on the electronic gadgets most of the time. Battery is going to be the main concern for all gadgets like gaming, laptops, phones, or even in that case electric cars Apple should change their conservative approach to more liberal Otherwise, competitors will be ahead in the race in coming years. I hope Apple don't lose its charm.

Hope this will help you all here.

This would be my second post here regarding iPhone 12 pro 256GB in USA. I have had this phone for now 10 days. Initially, I had an issue with battery draining when it is completely idle for 7-8 hours, on wifi and data off at about 7-10%. I called Apple support and escalated this issue to engineering team. The reply was my battery was behaving way above average its life. Apple support told that it takes time for a new battery to adjust itself for new ios as well as the usage and charging habit of an individual. After that it will perform to its fullest capacity.

Then for the last 4-5 days, after I got reply from Apple, I have been observing battery while idle, using on only wifi on/off and also only data on/off, and both of them on at the same time. While in idle state for 7-8 hours, with wifi and LTE data on, it hardly drops 1-2%, so that's a much improvement. Then on usage with only wifi on and only data and with both on, I used the phone and it lasted 8-9 hours straight, battery drops from 100% to 17% till this usage. This includes Facetime (on data as well as wifi), whatsapp video call and texting, Facebook, Safari surfing, speedtest app, Apple inbuilt mail app to check emails, accessing photos, playing a light (less power consuming) game, regular phone calls, and other apps like banking, paypal, weather, news, and playing with settings and also just surfing the screen here and there. I didn't take any photos or videos in these 8-9 hours of usage.

I have regular postpaid sim card.

So I think you should allow your new iPhone to settle down a bit and get used to the new environment.

Few suggestions I found so far.

1. Apple told to charge the battery to 100% all the time. Heat also effects the battery life, so try to avoid using phone while charging and also avoid direct sunlight (it is likely to drain more in idle state in hot environment).
2. I also reduced the "white point" to 50% which is in settings --> accessibility --> display & text size all the way option. I didn't put on lower power mode until it switches automatically at 20%. Brightness during this usage was from 15% to 90%, most of the time it was 25%) as I was indoor.
3. Also turn on "dark mode" on whenever possible, especially at night. It will help white pixels OLED screen consume less power.
4. Other settings, I always keep privacy --> location services to never or while using app option for all the apps. Also turn off location for all the system services except Emergency calls & SOS and Find My iPhone. Also turn off Signification Locations under system services.
5. Background refresh is turn off completely.
6. Notifications are on for certain apps only otherwise off.
7. Turn off the push option for emails. Rather go for manual fetch for the all the emails you got or if you need push option then go for hourly fetching.
8. Avoid automatic icloud backup.
9. Avoid automatic updates of app.

I have had used iPhone 6 and 7 since 2015 and had these consistent settings on all my iPhones. This helped a lot.

Note: Apple should now concentrate more on performance rather than just design and display. It's 2021, we are on the electronic gadgets most of the time. Battery is going to be the main concern for all gadgets like gaming, laptops, phones, or even in that case electric cars Apple should change their conservative approach to more liberal Otherwise, competitors will be ahead in the race in coming years. I hope Apple don't lose its charm.

Hope this will help you all here.

Less

Even though not specifically mentioned, it does. At least it did for me. Maybe it could have been recently changed in 14.4 or something, but I did not get notified about messages in apples own native messaging app. Or maybe it is just iMessages and regular sms via cellular do get a notification. (and it is not because of the notification bug in iOS 14, because I got the notifications every other time when LDM was disabled.)

I contribute this to the following statement as listed in the article.

• Apps might stop using network data when you're not actively using them.

And it could hurt the user experience depending on what the user does and needs/wants. I've read someplace that this mode is not recommended to be turned on all the time, unless you really need to save data or something similar, and I have to agree.

But we shouldn't talk about this topic here, because users will point out that this is a thread for battery drain discussions and nothing much of anything else

Since we are mostly still tiptoeing in the dark regarding this issue, you could try the following. (It did improve battery life for me although I am not completely sure that it makes senses that it did)

• if you have added the Shazam toggle in control center, remove it. Shazam was notorious for staying in the background for long times, maybe it also doesn’t get suspended properly if the feature is sort of in standby when in control center

• offload unused apps, in Settings > App Store

reboot after making changes.

i like to disable most things that do anything automatically, like stated with offload unused apps. I doubt that it does anything while the device has enough storage but it could be that something still is running somehow.

without turning off all features, i always like to think, one enabled toggle less is one process less that is draining power

Same. New 12 pro. Just activated, standard apps only. IOS 14.2.1 from the box.

All communication off (cellular, wi-fi, bt) ... I am not using iPhone at all.

• 45-50% per 24 hours with sim card.

And

• 2-3% per 24 hours without physical sim.

It is a bug @Apple

I have an iPhone XS running iOS 14(.6) and I also have this battery drain issue. During the day too. I however have narrowed the search for the cause down to the following:

• If my phone is in a Wifi at home together with my Macs, it drains fast (need to recharge twice a day).
• If I put the phone into my guest Wifi, which has no other devices on it and only internet connection, it does NOT drain. Neither does it when left on LTE (but still uses more power than when on guest Wifi, which makes sense of course, because the radio needs more power).

I already tried running no 3rd party software on the Macs, Catalina vs. Big Sur, and various other options. Initially, having iMazing running or not on my backup server made a difference, but it wasn‘t that. I filed a Feedback with Apple, but well.

Sorry I didn‘t read all 169 pages of this thread before posting.

Hi all, the battery drain in my iPhone is now much better than last week. What I did:

• complete reinstall (two times) and letting it run without a reinstall of the backup > no change
• shutting off many unnecessary background activities > no change
• complete reinstall a third time, installing the last backup and while running I pulled the SIM card and several seconds reinserted it. After this action, the heavy battery drain is almost gone. But I don't know what really did the change.

Before, with this heavy drain the battery app sometimes showed non stop use of the flashlight while it had never been used at all … very strange.

Hope for a cure by Apple!

Please, everyone, it has nothing to do with the hardware. Your iPhone 12 is as fine or not fine as a random 11 or even my XS. It's a software issue, so every model running iOS 14 is potentially affected.

Whoever has Macs running in the same network as the iPhone is logged into, I suggest trying to use a different Wifi, e.g. your router's guest Wifi, with the phone for a while, and see if there's a difference. Or stick to LTE if you don't have a second Wifi.

In my case:

• need to recharge twice a day if in the same network, and phone is warm to the touch all day
• no need to recharge, remaining charge ~40% in the evening if I'm on the guest network.

So, I'd love to have this test repeated by other people.

I’m still conducting tests, but in my case, it APPEARS that the problem was two-fold:

1. Finder/Wi-Fi bug caused by macOS Big Sur 11.4+ and/or iOS 14.5+. Disabling “Show on Wi-Fi” in Finder fixes this.
2. AirTag firmware 1.0.276, deployed June 23, 2021. Disabling Find My under Settings → iCloud → Find My → Find My iPhone → Find My network fixes this. (This applies even if you don’t own AirTags, but live eg. in an apartment complex, where many tenants may own Apple devices that participate in the Find My network, and thus, could be pinging your iPhone/iPad all-day long.)

Again, I’m still conducting tests to make sure those are the only two culprits (and that they are both actual culprits). But as of this writing, I am becoming extremely confident in these findings. It’s only with both of those settings disabled that my battery remains flat most of the day while idle. Otherwise, it drains ≈5% per hour AT BEST.

Hopefully I’ve stopped the insane battery aging on my 12 Pro Max. It went from 100% health in late June to 95% health in early August—and that’s with me being out of town (away from the battery drain) 2 out of those 6 weeks! I’m kind of glad iPadOS doesn’t show battery health, because I’d be ****** if I saw 95%, 2 months into owning a device I intend to keep for 4+ years.