IOS 11.2.5 battery drain

Interestingly, I removed the SIM card and left the phone linked up to the WiFi and battery consumption seemed to be fine. However, as soon as I pick up the phone and start typing or using apps, zap! It starts to drain.

I fixed my issue by disabling iMessage in the settings. Since that I've re-enabled iMessage again and things still work fine. I've logged the energy consumption again and I now notice that my phone goes into sleep mode which it did not do before disabling and re-enabling iMessage.

Interestingly I removed the sim and ran the phone just using WiFi. Used it continuously for over 9 hours and still have 26% battery!

I received a new iPhone 7 back from apple after a repair, this has iOS 11.2.1 still. The sim is installed, I’m tethering and using the apps continuously. 3 hours later, I’m still on 88%. So it is definitely an issue with iOS 11.2.5.

I too am having battery draining issues on my iPhone 6 and iPad mini 2 since the update. I have spent several hours with Apple support chat/phone, and taking all steps possible to improve the battery life. Nothing has worked for me. Have you been able to improve your situation?

Hi Diane, I was running an iPhone 6s on the updated iOS 11.2.5 whilst my iPhone 7 was in for repair. The battery was draining fast and losing around 1% per min even when idle.

I received a new iPhone 7 from apple with iOS 11.2.1 installed. I took the sim out of the iPhone 6s and put it in the iPhone 7. I continued to run the iPhone 6s using WiFi only and used all the apps and video etc, battery life is great (15 hours and still on 15%). It would seem that the battery drain is linked to being on a mobile network or in the phone software that related to this.

My iPhone 7 running iOS 11.2.1 is fantastic! I’ve been using it for the last 5 hours on the phone network, apps and even tethering to the iPhone 6s. The battery is still on 78%!

So in my humble opinion, the issue is definitely the new iOS 11.2.5, apple should investigate this as it is a shambles.

Your reply has merit, but I don’t understand why my usage of my iPhone 7 has not changed since installing the latest update and the battery is draining. If anything, I’m using less to preserve the battery. Will the next update address the battery drain issue?

Ok, just went through this. BTW, its Harvard the town, not Harvard U.

Ignore the advice from Apple below, or as I call it, the iFinger.

What worked was doing a complete reinstall and treating it as a new phone. Do not restore from backup (which I tried and did not work). So back up your photos or anything else you really care about using iTunes, do a clean install to 11.2.5, and treat it as a new phone. That means you have to reinstall your aps one at a time.

Very ugly, but it worked.

I have the exact same problem. Anyone who has had an iPhone knows the drill, so no need for Apple to keep telling us how to conserve battery life. The problem is with the updates and Apple knows this, so why are they skirting the issue and pretending we are morons instead of fixing it? I've had an iPhone since the first release, but I've had it. Jobs never would have stood for this. Apple should be ashamed. I'm giving them one more try and then tossing the iPhone in favor of Android. When enough people follow this path, the investors will demand that they stop playing games with us and get back to work.

The same exact problem ever since updating to 11.5 and I have an iPhone X barely a month old. I went through the day and end up with a battery 30-40%. Now with this update using as before I end up with 2-5%... very depressing for a new iPhone 💩

Hi Dive 1082, I don't have a SIM card in my phone- had to go another route. So, after changing setting on 6 items, my battery life is actually better than before even🙂...today anyway. I haven't changed any of these setting back one at a time to try to pinpoint the problem. I'll leave that for another day. But here is what I did.

I just had a feeling that something was hung up and constantly running even though it didn't show in the Battery Usage, to drain the battery.

I hope this will help someone else with the issue.

1-Personal Hot Spot- toggled ON/-OFF

2-Messages>iMessage- toggled OFF/On

3-General>Handoff- I turned that OFF

4-Safari> Clear History and Website Data

5-Music>Cellular Data - turned OFF

6-iBooks>Cellular Data- turned OFF

Maybe some of these setting I changed wouldn't make a difference, but right now all I care about is that I can use my phone again, and figures, I ordered a battery pack that got delivered today.

Why don't apple understand that after ios 11.2.5 update battery is draining faster than before update, Why don't they come up with patch or fix for this rather suggesting tuning battery performance and settings. I'm facing battery problem after updating my Iphone 6+ to ios 11.2.5.

You are right. I have 6s (1,5y old) and i have manufacture issue: dark corner , dust under screen, and ofc i have no warranty. And now i have battery drain on iOS 11.2.5. I am dissapointed in Apple devices. 😢

Cynical or not, I was thinking the same thing. Nothing I have done since this update has fixed the problem. And I’m of the opinion that it’s a devious and greedy way to keep customers buying new products. And they’re not inexpensive products!!

I will not buy another iPad if this problem isn’t fixed. Why would I trust they wouldn’t do this again in a couple of years? My iPad worked perfectly until this. Not a thing wrong and held 100% charge on standby all day. Now it’s dying on standby.

Everybody at Apple acts like they don’t have a clue what’s going on. You get the standard ”battery saving tips” for an answer when you ask for help, and it doesn’t help.

Hint for Apple: if there are this many people complaining about an issue, it needs to be fixed. Not fixing it is a great way to lose customers.

I have a 6s and I’ve had it for a year. Before today it worked fine and I never had issues with battery life. Today when I woke up it was 100% and only dropped to 98 after usage before I left for work. When I got to work and sat in my car on it for a few minutes it dropped to 80%. I restarted it and it jumped to 96% but dropped to 90 as I walked in the building. I charged it for an hour and then it stayed on 100 till I went to lunch. I even used it a little. Then at lunch it started dropping again. So I installed the new IOS update and it’s STILL having issues. I’m charging it now but I need to know how to fix this.