iPhone 13 Pro battery draining overnight

The best solution is charge the battery overnight? Really? Is the same like if you say the the best solution for car with hole in the fuel tank is to refill more gasoline..

I think the best solution is to find the reason why the battery drains overnight so fast.

I understand 5-7% during 7-8 hours standby during the night, but 30-40%??

Do you guys try to erase all data and backup your phones from iCloud? Not Reset All Settings but Erase All Content and Settings?

nosleduc wrote:

I have updated ios 15 to 15.0.1, I have also upgraded my apple watch 3 to watchOS 8.

I have shutdown all my apple devices except the watch

Today at 9 am, the battery was at 40%.

At work, the phone is not connected to wifi but only cellular.

As you can see in the following picture, I have charged to 100% at 1 pm and and get 70% at 7:30 pm after listening spotify all day and I watch a video youtube about 30 mm before coming home.

I charged it until midmight and then unplug it.

As you see, the slope of discharge is more important during night compared to daylight

I'm thinking an issue with my wifi or with cellular antenna around me

Well, it’s not Wi-Fi because the phone turns off Wi-Fi when the screen locks. A weak cellular signal will use a lot of power; one bar uses 10 times as much power as 4 bars (the signal strength display is logarithmic), and a cellular signal that disappears completely will use the most power as the phone tries to reconnect every few minutes at maximum power. What apps show the most power consumption?

Also, on your carrier’s website what times do you see the most data usage, keeping in mind that reported usage is at the end of a period of time, and includes all usage since the previous report. Depending on your carrier these reports will typically be 3 to 6 hours apart.

Charge it overnight. The absolute best way to slow the decline of battery capacity long term is to enable Optimized Battery Charging (Settings/Battery/Battery Health) and charge the device overnight, every night. The battery will fast charge to 80%, then pause. During the nighttime pause the phone will use mains power instead of battery power, allowing the battery to “rest”, and thus reducing the need to charge the battery quite as often. The phone will resume charging to reach 100% when you are ready to use your phone; it will “learn” your usage pattern. If you enable iCloud Backup (Settings/[your name]/iCloud - iCloud Backup) the phone will back up overnight also, assuring that you can never lose more than the current day’s updates.

Same problem on iPhone 13 using dual sim (esim and nano sim), on 5g auto and vowifi for both carriers ios 15.3, location services off except find my, with or without air tags, no fetch and push notification/ emails

The only thing that stopped the battery drain on standby for me was either the following:

Put my phones on airplane mode just before sleeping

and/or

Set the cellular data to the nano sim instead of the esim

For me, after a complete reset of my phone and watch everything is back to normal and working fine for months now. I didn’t restore from iCloud backup, I set up as a new device. Battery is fantastic again.

It was quite a pain finding the time to do, but I’m glad I managed to sort it out. Resetting as a brand new phone is annoying, but on one hand I also managed to get rid of a lot of old unused stuff that I’ve been carrying around for years.

For me it was definitely something to do with my Apple Watch - battery drain completely went when I unpaired the watch. But I love my watch, so decided to do a complete reset of everything and thankfully it solved it.

I posted in the MacRumors Forum and am posting again here. What’s really strange is that if the OS update is the issue then it doesn’t explain why my battery life has been great a month in 15.5. The sudden battery drain occurred just recently (3weeks ago) and there were no updates from that time. I’m certain of it because I set it to NOT automatically update.

I’ve been having battery drain issue for weeks so far. I literally tried everything I could and even made a troubleshooting list:

• location services off
• Share location off
• Reseted Apple Watch
• Update Apple Watch OS
• Logged out Apple account
• Logged out iCloud
• Restarted phone
• Removed AirTags and AirTag batteries
• Deleted some apps
• iCloud log off
• Toggle off wifi
• Reset all settings
• Factory reset phone
• Find my off
• Find my device off
• Airplane mode turned on
• Bluetooth off
• Powered off my phone

None of the above solutions worked. I couldn’t believe that even when my phone is powered off it’s still drains. My battery drains 30-40% even when there’s absolutely nothing showing in the battery usage tab throughout the night. At this point my phone is no longer a smart phone. I’m very disappointed as this is an iPhone 13 which I got 6 months ago. The only option I have now is to bring it to Apple Store unless someone has another idea that I can add on the list. Please let me know lol. This is honestly such a time waster trying to figure this out.

Update:

Went to Apple store and rep said I need to use the computer to factory reset the iPhone since the computer freshly installs the OS onto the phone. She said not to restore from backup as well. Done all that but battery still drains.

i recently got an iphone 13 pro. not sure if it had to do with the last update, which was even more recent, but i noticed i was losing around 15 to 18% charge overnight even though i put it in airplane mode when i go to sleep. i even tried turning off all background refresh before going to bed and no difference. i did a reset all settings and so far it's been good.

You can turn on airplane mode when you are sleeping at night.

You can also turn on airplane mode at night when you are sleeping. I also use an iPhone 13 pro and my battery drains around 2% to 3% at night.

Note: That's turn off Bluetooth completely via the switch in the Settings app (not via the button in the control centre)

You need to put that on 5G auto or 4G. Huge battery consumption is because the mobile phone is trying to search for 5G all the time. I think this will help a lot.

it started happening again. did another reset of all settings and it's holding the charge overnight again. looks like i'm going to have to do this every couple weeks..

Lawrence Finch wrote:

JayMecina wrote:

The best solution is charge the battery overnight? Really? Is the same like if you say the the best solution for car with hole in the fuel tank is to refill more gasoline..

Nonsense. You charge overnight so most of the energy the phone uses overnight comes from the external power source rather than the battery, which extends the life of the battery because it has fewer discharge/charge cycles over its lifetime. And you get “free” automatic overnight backups, so you can never suffer substantial data loss.

Further, if you DON’T charge overnight all overnight data communications uses cellular data, because Wi-Fi is turned off when the phone is locked and not plugged in. And cellular data is the largest user of energy after the display, especially with a weak or intermittent signal. A 5 bar signal requires 50 MW of RF energy; a 1 bar, 600 MW, thus over 10 times as much energy is required for a weak signal.

Ehhh, I do not think that overnight charging is a bad option in some cases but I KNOW that this is not a cause of draining the battery that nocleduc has.

Everybody knows that overnight charging equals full battery in the morning...

nosleduc said: I had never issues like this with 5g enabled with my iphone 12 pro max

Nosleduc doesn't have the same problem with his iPhone 12 Pro Max so he expects the same with his iPhone 13 Pro.

Maybe he doesn't want to charge the battery overnight because he doesn't have the electrical socket near the bad ;-)

Sooo it is the software or hardware problem, maybe even with weak signal.

I have 2 bar signal during all night, and experienced 5% drop from fe. 00 am to 8 am so it is normal for my taste (I am using iPhone 13 Pro).

But I had the same problem with my old iPhone X a 1.5 year ago.

I erased all data and restored my iPhone X from iCloud and that helped in my case, so I recommend this method first.

We should look for the cause of the problem first. Like a doctor who shouldn't give drugs to the patient until the cause of the disease is not found. So I think it is a hardware problem connected to weak signal during the night