For the past few weeks my iPhone 6s Plus‘ battery has been dying way faster than it should. For example, on Sunday my battery was at 35% by 3pm under light usage. The next day it was at 18% by 2pm. Considering I’ve never experienced bad battery life on this particular iPhone, I figured I would try restoring in iTunes to fix the problem (I already tried iCloud and that didn’t help). Unfortunately, and iTunes restore didn’t work either.
I should say up front that I did not restore new and I did bring down my iTunes encrypted backup after restoring. This is because I had no desire to lose years of health data, which is what would happen if I had to restore new. Yes, I know you can export your Health app data, but that doesn’t leave you with a way to re-import it to the Health app, which is where I want it to live.
So before giving up and deciding I had no other option but restoring new, I decide to try one more thing….
Instead of restoring again, I decided to try resetting all my settings
While I guess it could have been a possibility that the issue was lurking somewhere in my iTunes or iCloud backups, I figured it was highly unlikely due to the way iCloud and iTunes backups work (most stuff is installed new anyways in terms of apps, etc). However, a corrupt setting could be the culprit.
For those that aren’t already aware, resetting all your iPhone’s settings does not delete data or media off your device. What it does erase are all your preferences, settings, and known WiFi networks. While it’s annoying to have to rejoin networks again and re-configure preferences such as push notifications, alarms, and other basic settings, I find this to be far less destructive than having to lose all my apps, the data within them, and more importantly, my Health data.
3 days later, my iPhone is now running perfectly again. By 2pm yesterday (and the day before), I had a remarkable 70% or more battery. By the end of the day, I still had around 20%.
If you aren’t sure how to reset all settings, just follow these steps (as a side note, this applies to your iPad too if you’re experiencing bad battery life):
How to reset all settings on your iPhone or iPad
Launch the Settings app on your iPhone or iPad.
Tap on General.
Tap on Reset.
Now choose Reset All Settings.
You’ll be asked to enter your passcode if you have one set up.
Lastly, you’ll be asked to choose twice to confirm your selection and your iPhone (or iPad) will reboot.
Once your iPhone or iPad reboots, your settings and preferences will be restored to default. In case you’re wondering, here are some of the things you’ll want to re-configure after resetting all your settings:
Alert sounds for messages, mail, calls, etc (and things like duplicate alerts or custom vibrations)
Rejoin previously known WiFi networks
Alarms and timers will be deleted
Location data will be reset
Push Notifications and Notification Center defaults will be restored to stock
All apps should now ask you to allow or deny permissions such as push notifications again
I may be missing a few things in here but basically, just go through the Settings app and tap into each section and make sure you tweak any settings to match when you had before wiping them. You may find it helpful to take screenshots before hand of more advanced sections if you don’t think you’ll remember everything.
If you’ve been experiencing bad iPhone battery life, give this a try before wiping and restoring new. Then let me know how it worked for you in the comments!