iPhone 12 battery draining fast

Do you mean deleting the browser history, along with the cookies, or do you mean something else? Because I did that, and it didn‘t have any effect (other than that me needing to log into all the websites again).

Hi. In Safari go History - Clear History.

The box says "Clearing History will remove related cookies and other website data. History will also be removed on other devices signed in to your iCloud account." You probably need to be signed in to your iCloud account on your phone. I am not at all technical and hardly know how to use my phone, but my battery just started working normally again. It may have been a coincidence that I cleared the history on my Mac (I normally do it every day, but had left it for a couple of days). But I can't think of any other reason why it would have started working normally again. I found that the battery just levelled off and stopped draining. I recharged it yesterday evening and still have 85% after 1.5 days.

Well, for me, deleting the history didn‘t have any effect. And I did other things that at first seemed to make a difference, like quitting certain Mac apps (iMazing), or rebooting the phone, but nothing lasted.

The only thing that consistently fixes the battery consumption is using my own guest Wifi network with the phone, which has no other devices on it, notably no Macs. Completely shutting down all Macs (without changing the Wifi network) has a similar effect. Using the guest network fixes it 100% of the time, but of course I lose connectivity to all my home networked stuff.

From this evidence, it must be some software component on the Macs which the phone directly communicates with. I even went ahead and captured the network traffic between Macs and the phone, which is plenty, but I can‘t see much there because it‘s all random ports above 40000 (googling for them didn’t reveal anything) and encrypted content.

This really can’t be a solution, its just a coincidence that you cleared your history and your battery problem got solved. Non of us have been able to solve this issue with this method. A lot of people have mentioned so many ways like this but its just a coincidence that their battery problem is solved. We have tried even more than these solutions like contacting the apple support team and going to the service centre and if that has not been any help, then these weird solutions will definitely not be of any help.

I can't explain what happened, I just know that my battery is working fine now. Have you got any other devices, maybe you should try clearing the history on Safari on your phone, or any other Apple device you may have linked up.

I have restored my phone multiple times, its been at the service centre under observation for 24 hour's. Nothing has helped till date so I don’t even wanna try and do anything more to fix this issue until apple has a fix from their side. I’ve pretty much given up on this issue and if the mew iphone coming in September or October doesn’t have this problem I’ll just trade in this device for a new one.

I am also experiencing the same issue . I had noticed many time in night my iPhone 12 was 28-30% charge. When I wake up it was off there was no battery. And I only use 4g network. My background apps are also on close button.

And I had also buy 20 watt adapter from icrest it takes 40-50 min for 80% but after 80-100 it take 60-100 min more it means my iPhone 12 taking 220-250 min (2-2.5 hr) in charging full battery from 0-100

I’m gonna be very honest, you shouldn’t expect any better battery life on your iphone. The iphone 12 lineup’s battery is the worst ever battery for an iphone built in so many years. We all have to bear with thr crap that apple has launched

If you are hoping for an update to fix this problem, i have been waiting for a fix right from ios 14.2.1 and no software update has made anything better. In fact some softwares made the phone drain even more. Your frustration is completely justified but there’s just nothing we can do in this situation. The money paid for this phone is definitely large. I use my 12 pro for hardly 1-1.5 hours a day and my phone drops 35-40% which is too bad i think. The iphone should last for 8 hours of screen on time. I feel the time between charges should not be considered as reliable way of measuring the battery life but the screen time between charges is what should matter. Whether the 8 hours is used in 1,2 or 3 days it should survive but now because of the standby drain we don’t even get past 1 day easily even if the usage is minimum because of standby drain

Can we turn off standby. Your information is very helpful for me. I am debating on this. I have 11promax and I have problem with this. Apple has no answer for me. They say get a new one. When I try to answer my call my call gets disconnected. I have to let people know I will call back because of this situation. I am frustrated.

Turning off optimised battery charging means that the time taken to charge the iphone from 80% to 100% would be quicker. If optimised battery charging is on the charging rate to slow to down to large extent between 80% to 100%. If you charge your phone at a fixed point of time everyday, iphone will recognise your charging pattern and your iphone would only be charged to 100% when you actually need to use it.

I recently upgraded last month to an iPhone 12 and 1/2 way through the day weather I’m on my phone or not I have to recharge it. Even if it’s fully charged it drains throughout the night. The iPhone 11 I had I didn’t have to charge until nighttime. The battery life was great. This iPhone 12 battery drains even when not in use. I’m not sure what my options are. I’m hoping Apple can fix this problem.

Until then (hopefully), if you're home and your contract supports Wi-Fi calling, enable that in the cellular settings (if its isn't enabled already) and put your iPhone into airplane mode. Make sure to re-enable Wi-Fi if it turns off the first time you enable airplane mode. This at least stops the drain while you're home or connected to Wi-Fi wherever

I am speaking to a manager that is going to talk to an engineer. While speaking to him, we were share screening and looking at the battery usage. The chart said that I was on screen an hour between 3 to 4 pm and it was only 3:40 which is impossible bc the hour was not even done. Also the 10 day chart, use does not add up with my screenshots. I am very analytical and no not complain unless I have proof.m How can Apple support use data if not collected correctly. Also, I observed that when I am 100 charge during night no drainage but anything under 100, 5 percent overnight with no usuage or refresh app on. I postulate that once the battery is triggered with use, it just slowly drains without usage unlike my mom’s iPhone 11 that stay at percentage until used. Apple even made me turn of cellular for a day n still drainage. I know they read these forum but act like this all new to them. Frustrated that I bought this phone.