Iphone 6s Battery suddenly draining

Batteries have unpredictable behaviours when they are reaching the critical point of their life.

I would make a full backup of your iPhone as soon as possible, then I'd make an appoitment at your most convenient Apple Store to have your battery replaced.

You certainly know about the reducted price: $29 + taxes

Regards

Giulio

My 6S was getting less than a day on standby, and just a couple hours with use. Waiting for a team member in the Apple Store, I saw my battery drain from 50% to 19% while looking at Facebook. Battery Health reported 88%. Despite this fact, the Genius Bar member did everything in her power to try to convince me NOT to buy a new battery. Finally, upon installing a new battery, I again get 2-3 days on a fresh charge with light use. Hmmm...Battery Health (beta) needs work.

iPhone Battery and Performance - Apple Support

iPhone 6s Program for Unexpected Shutdown Issues - Apple Support

Have you checked the maximum capacity percentage of your battery?

Settings>Battery>battery Life (beta)... then tap on it.

Regards

Giulio

Hi

Iphone will need a battery replacement make an appointment at Apple store.

Cost is £25/$29

Cheers

Brian 🇬-1F1E7;

Hi

If iPhone Is about 2 years old it will need a new battery Make an appointment at Apple store or authorised apple repairer.

Cost is £25 /$29 dollars

Cheers

Brian 🇬-1F1E7;

Hi

You need a new battery Make an appointment at Apple store or authorised apple repairer.

Cost is £25 /$29 dollars

Cheers

Brian 🇬-1F1E7;

I have exactly opposite experience. I have replaced my battery with new one, but it was still being drained heavily, though not that rapidly as before replacing. You may say it was drained at a steady pace, when iPhone was not in use. However upgrading to iOS 12 made another difference, for good this time. Thus it must be 100% software related issue, not hardware related.

With iOS 12 my iPhone 6 is considerably faster, battery works as expected.

Hello,

There can be several reasons for your battery dying fast. You cannot stay on particular reason for the battery draining as several things can be considered for your iPhone 6s problem. Well I would like to guide you few tips on how to boost your battery life longer.

Tip 1: Check for the apps that consuming more power

Tip 2: Switch your phone to ‘Airplane Mode’

Tip 3: Update your iPhone/iPad

Tip 4: Remove unwanted widgets on lock screen

Tip 5: Switch off ‘Wi-Fi’ when in not use

Tip 6: Update all Apps on your phone

Tip 7: Use location service when required

Tip 8: Switch off Bluetooth service

Tip 9: Close the apps running in background

Tip 10: Switch off Raise to Wake on iPhone

Tip 11: Change the battery

These are the few things that can surely help you to make your iPhone battery last longer no matter whichever iPhone model you use.

Best of luck...

It is definitely an OS issue. I literally cannot use my 6s after updating it from iOS 10 to iOS 11.4.1. After updating it to iOS 12 it just got worse. The battery drops every minute by doing nothing. (Empty phone: No photos, no apps, no indexing, no location service, no LTE, no bluetooth, no background apps. I don't even use the phone. The battery section in settings show no applications.) I don't think the battery gets much worse in one day and that day just coincides with the iOS update.

By the way I have an iPad Mini and a few years ago I updated it to 9.3.5 which is the latest version supported. It rendered the device unusable. I couldn't do any thing without seconds of lags. Everywhere on the internet people say that it is a battery issue and I have to replace it. However, a few months ago I have found a way to downgrade it to 8.4.1 and the issues are gone. Just poof!!! No more lags and excellent battery life (even if it is more than 5 years old.)

So, no; I don't believe your old battery claims.

I am going back to iOS 11.4.1 and will wait for a way to downgrade it to good old iOS 10.

Long story short, it's happening to me and my iPhone 6s as well with a completely new battery.

I had a bad battery with reduced performance, battery life was not great but usable. Then I updated to iOS 12 and my iPhone 6s basically became a brick that sometimes depleted before my eyes, dropping 2-3% per minute. I initially thought it was the battery so I replaced it at my near by official service partner.

Now my iPhone is running iOS 12.0.1 and the battery health reports "Maximum Performance Capability" with 100% maximum performance, but the battery will still drain completely in 5-6 hours on standby. According to the battery usage Siri is the main culprit so now I've turned off everything I could in the Siri settings without it helping.

I've attached a screenshot. It shows how the battery drained from 100% down to 3% in around 5 hours, most of the time on standby. Between 16.00-17.00 I didn't use the phone at all other than checking the time once, but despite that, the battery continued to drain and Siri (that I've turned off) had 100% of the battery usage. That's just insane!

One weird thing is that it sometimes behaves correct. Also on the screenshot, it shows the battery consumption last night. During 9 hours it just dropped from 85% to 70% which is kind of what I expect when it's on standby. Other nights the battery have almost completely depleted after 8 hours of standby despite it being fully charged from the beginning.

So it's definitely some odd software behavior here that drains the battery. My battery is just 5 days old but still it won't last more than 5-6 hours if I'm lucky.

On my 6s, it's Bluetooth causing this problem. Just turn it off in settings. Don't do it in the control panel or it will come back on.

This thread began in June but now it’s October 25 and people are still reporting the problem, so I’ll join in. On my 6s, Bluetooth is the culprit. It seems to be turning itself on even when I’ve turned it off using “settings”, and when it’s on it drains the battery very rapidly.

I’m in the same boat: for me the problem started last month (way after iOS 11.4). My daily commute is 35 minutes and when using my iPhone for some reading and music it drops more than 50% during that time. Overnight it easily drops 40%. When in use I can watch the % go down, usually 4-5% in a minute after which it stabalizes for a few minutes.

Restoring the phone did not help. Battery health was at 82% but peak performance throttling was activated after the phone once died at 20%. I purchased a new battery but that did not help 😡

i now did a complete wipe and clean set up of the phone. It did keep full charge overnight (99%) indicating there is a software issue with one of my (now deleted third party) apps or the OS itself (iCloud sync?) but as soon as I picked it up and started using it this morning, it immediately dropped 5%.

Yeah I know how you feel. Got the same problem here with my iphone 6S. Battery health shows 99%. But will drain quickly if I use the phone, or lose about 10% an hour idle with no back ground refresh, no push , no notification etc etc. Common theme appears to be an iOS update. For me it happened after installing iOS 12.1.1.... 12.1 was fine. 12.1.2 did not solve the issue. Nor did setting the phone up as new with no apps at all after a clean wipe. Hopefully it's something that will/can be fixed via iOS update ..