Why is my iPhone 16 Pro Max battery draining so fast?

I bought the iPhone 16 Pro Max on launch day. After the initial run, I got an update of iOS 18.0. Then later I'm experiencing a massive battery drain issue. It's even draining quicker than my old iPhone 8 Plus. Even just for calling it's like reducing quickly like 100, 99, 98, 97,... Is this issue related to hardware or software? I chatted with the online support; they suggested the usual things for the old phones for new iPhones. It's too disappointing. Do I need to wait until the next update?

Or can I go to the nearest service center? It's just only 4 days since I've been using this iPhone.

My battery has drained from 100% to 70% since I woke up 2 hours ago. I have a 16 PRO and I can tell you this will be my last apple phone. $1300 for a 512 mb phone and I have to charge it at least twice during the day. Disgusting.

To be honest I had my 16 pro max Friday 20/09/24. Charged it to full Sunday night and have not had to charge it and it’s now Tuesday 34/09/24 and still on 60% so I’d say it’s fr better but I was upgrading from 13 pro max.

So it’s the 25th of September now here in N.Z., and it seems like the battery draining on the new iPhone 16 Pro Max still happening, atleast to mine. I thought I’ll give it a couple a days like what the other says also in other forums but, it’s still draining fast.

Any update on any of you guys regarding this matter? I thought the new iPhone can go up to 33 hours seems like it’s only going half of that.

Originally ordered an iPhone 16PM and couldn't handle the size/weight. I returned it on launch day, and switched to the regular 16 Pro. It's now Tuesday evening and all I've experienced is battery drain on battery drain. I've charged the phone to 100% and taken it off the charger at 6:30AM. With CarPlay for an hour, nav for 30 mins of that, music, and some texting the phone will be in the low 50% before noon. Today it was used even less and I was seeing numbers in the mid 40's. I've never been more disappointed in a new phone as much as this. I have purposefully not sent in my 15 because of how unhappy I am with this. It's literally pointless to have all this tech in a phone that has to be plugged in so often I feel anxious leaving the charger. I could turn off AOD, I could limit frame rate, but why? I should just have a standard model if I'm turning off all those features. Today I used the camera to take some shots of my daughter's soccer game and it drained 30% using the camera. How in the world should I be excited for Apple Intelligence when the battery WITHOUT said headlining feature isn't even available????? I feel like that's only going to make this even worse. I don't know what to do, but I need to make a decision quickly.

My 16 Pro Max is lucky to get 8 hours. Apple and testers say somewhere around 18 1/2 hours of screen on time is what people should be getting. I guess that’s if you have a battery booster pack hooked up from Home Depot.

On the launch day of the 16 Pro max I went and gave my 13 Pro Max to my daughter. It had 84% battery health left after 3 years and still out performed this 16 Pro Max for battery time. I got a new battery installed at the Apple Store for my daughter and…. Wait for it… she’s getting easily 1 1/2 days between charges on the 13 Pro Max now on iOS18!!

The 13 Pro Max is certainly one of the best iPhones ever released.

I’m sure Apple will address this issue as this is their flagship phone and you can’t irritate high end customers more than they already have given the fact they shipped the 16 Pro & Max without Ai.

Apple should bring back an Ai version of Steve Jobs to run the company.

Yes same as well- 16 pro max battery is not as good as advertised. Really hoping this issue is fixed.

i am thinking it is because I transferred all data from my old phone and did not set up as a new one.

I started using my ip16 pro straight out of the box at 1500 and my phone got to 20% at around 2100 and kept it on charger overnight. Today is my second day using it and it only ran me 12 hours ish before I got to 20% again :((

Same problem here. My 16 pro drains the battery so fast. I decided to try the iPhone this year after using Android for a long time. I am very surprised and worried about the battery, while I am reading this post my battery went from 71% to 67%. This is insane!

Mine 16 pro Max battery is also draining A LOT faster than my iPhone 13 pro Max.. I wanted to check the batteri status in the settings to see the procentage, but it just keep loading? Anyone who can’t see it either?

drewpayment wrote:

I suspected that it was Apple Intelligence, so I disabled for last 24 hours and it is draining the same without it enabled. Definitely something else going on.

This is on the 18.0 or the beta version of iOS 18?

Yes I am also having issues. Got it Monday after launch and it can’t keep a charge any longer than my previous phone. Very annoyed about it.

to compare my husband also got his on the same day and has no battery issues.

My IPhone 16 Promax battery is also draining faster than my previous IPhone 14 Promax. I had the new phone for a week. Kept the battery to maximum charge of 80% as suggested by the professional during online session and is not helping

Yup, my wife and I both upgraded our 13 Pro to 16 Pro and she noticed it first since I work from home and am usually near a charger. Now even with periodic charging my phone battery is draining almost at the same rate as my old 13pro which had a battery capacity of 80%.

Same here.

I had an iPhone 12 Pro with a very deteriorated battery and my new iPhone 16 Pro battery lasts the same if not less. Can’t give it a full day use without charging it mid way, so disappointing.