iPhone 13 Pro battery draining overnight

I bought a new iPhone 13 two days ago. I had heard that one of the selling points of this new model was improved battery life. The phone I was replacing was an iPhone XR which I've had since July 2019. I am quite shocked to be honest by how quickly the battery is draining on my new iPhone 13 - even in comparison with my 2.5 year old Xr!!

I've read through this thread and all the things that people recommend, I've already done - and the settings were already switched correctly. Furthermore, I have always switched off my phone at night (whilst I sleep) whether it is charging overnight or whether it isn't. So I can see no reason why I should wake up in the morning to find that 10% of the battery level has drained whilst the phone was off. There is clearly a fault with this iPhone battery, or the software that runs the phone.

What do you all think?

I also have bought 13 Pro max 2 week ago and there was an update of IOS 15.1 last week and since I am seeing a battery draining, I have all my app refresh turned off, dark mode is on and always made sure phone charges 80/85 percent. But till I hed to charge it 3 times since yesterday morning because every time it gets about 50% battery consumed in couple of hours, while I am not even watching Videos. I thought will observe few days more but saw the issue here raised so thought to add my problem too.

That depends on what you were doing. The only thing that uses energy from the battery is apps that you are using. 25% in 6 hours works out to about 50% a daytime, which is probably slightly better than most users see. Typically, if you charge a phone overnight (and you should), it will start the day at 100% and end the day between 20% and 40%. So your usage is a bit better than average.

Doctor Zhivago wrote:

My 13 has drained 5% in 8 minutes since switching on this morning. Not normal.

Perfectly normal. It will drain whenever apps uses energy, and when you first turn it on lots of apps will update their data at the same time. You seem to want to own a battery monitor more than a phone. You will be much happier if you ignore the battery and just enjoy using your phone, and charge it if it drops below 20% during the day after charging it overnight.

boas

tenho um Iphone 13 Pro Max e gostava de saber se é normal quando no écran diz que tem 100% de carga mas diz ao carregar .....

o meu com tudo desligado sem aplicações em segundo plano sem gps ligado nem encontrar Iphone e siri desligada e copia de segurança desligada, durante a noite gasta-me 20% de carga sem presença de aplicações a trabalhar.

mane584 wrote:

boas

tenho um Iphone 13 Pro Max e gostava de saber se é normal quando no écran diz que tem 100% de carga mas diz ao carregar .....

o meu com tudo desligado sem aplicações em segundo plano sem gps ligado nem encontrar Iphone e siri desligada e copia de segurança desligada, durante a noite gasta-me 20% de carga sem presença de aplicações a trabalhar.

There is never a time when apps on an iPhone are not working. There is always something using energy, for notifications, email and text downloads, data updates for both built-in apps and 3rd party apps (weather, for example). Turning off background app refresh does not stop apps from responding to events, it only blocks apps from spontaneously processing, something very few apps do even when enabled. And force-quitting apps does not stop them from responding to events, either. In fact, force-quitting apps actually wastes energy because when the app must reload to respond to a notification or event that requires more energy than just restarting a suspended app.

You should be charging the phone overnight; it is the best way to make your battery last longer.

Google Translate:

Nunca há um momento em que os aplicativos em um iPhone não estejam funcionando. Sempre há algo usando energia, para notificações, downloads de e-mail e texto, atualizações de dados para aplicativos integrados e aplicativos de terceiros (clima, por exemplo). Desativar a atualização do aplicativo em segundo plano não impede que os aplicativos respondam aos eventos, apenas bloqueia o processamento espontâneo dos aplicativos, algo que poucos aplicativos fazem mesmo quando habilitados. E o encerramento forçado de aplicativos também não os impede de responder aos eventos. Na verdade, o encerramento forçado de aplicativos desperdiça energia porque o aplicativo precisa ser recarregado para responder a uma notificação ou evento que requer mais energia do que apenas reiniciar um aplicativo suspenso.

Você deve carregar o telefone durante a noite; é a melhor maneira de fazer sua bateria durar mais.

The iPhone will stop charging when it reaches 100%. However, the icon will display the charging symbol to show that it is still connected and the external power source is providing power to run the phone. That is why charging overnight extends the life of the battery. Once the battery reaches 100% all energy used by the phone comes from the charger, and not the battery, so the battery can "rest".

O iPhone irá parar de carregar quando atingir 100%. No entanto, o ícone exibirá o símbolo de carregamento para mostrar que ainda está conectado e que a fonte de alimentação externa está fornecendo energia para ligar o telefone. É por isso que o carregamento durante a noite prolonga a vida útil da bateria. Assim que a bateria atinge 100%, toda a energia consumida pelo telefone vem do carregador, e não da bateria, para que a bateria possa "descansar".

It shouldn’t. Bluetooth is always off unless there is a device actively connected. And Wi-Fi is turned off when the phone screen locks, so it is off anyway unless you are actively using the phone, and then you want it to be on.

I hope you are having fun puzzling over why your battery loses energy overnight, but doing so rather than charging overnight will shorten the useful life of your battery. Your choice, however.

Some energy is going to staying connected to the cellular network. As you only have 3 bars that will be more than if you had 4 bars, and if it is even lower than 3 bars where you keep your phone overnight that will be a much greater drain.

"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. "

Lawrence, out of curiosity why do you state that WiFi is turned off when the phone is locked and on battery power? Not only does that make no sense from an engineering standpoint, but it is also not supported by my simple experimentation. My router has a status page that shows the online / offline status of every device that it has seen. If I manually turn WiFi off, the iPhone shows a transition from ONLINE to OFFLINE. If I leave WiFi on and lock the phone, the iPhone continues to show it is ONLINE. ??????

Paul

I state it because it is a fact. Wi-Fi uses energy continuously when connected, unlike cellular, which only uses energy when actually transferring data. It makes perfect sense from an engineering standpoint; if Wi-Fi remained connected battery drain would be REALLY unacceptable. Here’s a test you can do: Open a Terminal or Command window. On your phone go to Settings/Wi-Fi and tap on the i next to the network name, and write down the IP address.

On a Mac enter this command into the Terminal window with the phone unlocked:

ping <IP address> (for example, ping 192.168.1.10)

Note that every second it will ping the phone and report the result. Now lock the phone and continue to watch. After around 15-30 seconds the pings will start to fail, showing that the connection has been lost. Unlock the phone and they will resume. There are a couple of exceptions: if the phone receives a notification (all notifications use the cellular network) Wi-Fi will come back on for a few seconds to process the notification, but the rest of the time Wi-Fi is disconnected. Also, if there is a background process in active use while the phone is locked Wi-Fi will stay active until it finishes.

If Wi-Fi remains connected for one of these reasons that would account for battery drain when the phone is idle. A Wi-Fi connection uses 30 MW continuously. And thanks to the 2nd law of thermodynamics there is energy loss in the process, so the actual battery drain is closer to 50 MW. So in 10 hours the battery drain would be 500 MWH.

To stop the ping process use <Control>+C

If you are using Windows do this in a CMD window, and the command is:

ping /t <IP address>

"I state it because it is a fact. Wi-Fi uses energy continuously when connected, unlike cellular, which only uses energy when actually transferring data. It makes perfect sense from an engineering standpoint; if Wi-Fi remained connected battery drain would be REALLY unacceptable. "

Hmmmm.... I understand what you are saying. Maybe we are just in disagreement over semantics? I have not tried to ping my phone.... maybe it does indeed stop responding to pings after a while. But something the phone (iPhone 13) is doing makes the router think it is still connected since it shows online even when locked and sleeping. If I manually turn WiFi off, the router immediately shows the phone as "offline".

Or is it possible that something is misconfigured and it actually should NOT show as "online" when it is sleeping? I activate battery saver at night and my standby drain is about 0.4%/hour in battery save mode (no background refresh and no mail fetches). There was one night when the phone was new (about a week ago) where I saw about 0.1%/hour but that was only one night and I have not seen the standby drain that low since.

From what I have read, my 0.4%/hr is pretty reasonable. I found this thread while trying to maximize my standby time and saw your statement that WiFi is off during standby, which got me questioning and thinking.

Paul

I don’t know why your router works that way. My router shows all devices that have active leases, whether they are connected or not, and they remain on the list when I turn off Wi-Fi on the device. The only way you can no for sure is to try the ping test.

Shutting down the way you describe is one way to reduce battery drain, at the expense of convenience. But if you want the battery to last longer you should still charge overnight, and not jump through hoops to save the battery. An iPhone is a useful device, not just a battery monitor. More than likely the battery will last at least as long as you are going to own the phone or longer, and even if it doesn’t it is inexpensive and quick to have Apple replace the battery in an Apple store while you wait.

My battery profile looks exactly the same. I have turned off background refresh, restarted, forced restart, wiped my phone clean and reinstalled from backup and then did that again from a backup further back. I also turned off 5g and went back to LTE. None of these “fixes” worked. The phone is still doing the same thing. Did anyone find a fix that works?

I have no idea what problem you think you have, as this is your first post in this 5 page thread. But the answer is to charge your phone overnight, as has been said several times. The absolute best way to get maximum use on a charge, as well as 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.

If you aren’t going to take advice from users who know what they are talking about there is no point in discussing it further. Do you have a phone, or a $1,000 battery monitor that you are obsessive about? You need to make up your mind. Enjoy your phone, or worry needlessly about the battery. That’s your choice.