8 Replies Latest reply: Jun 20, 2015 9:55 AM by 7sk_city
AdrianoSM Level 1 Level 1

Hi, I took my iphone 4s to the genius bar at apple store today. Despite having terrible battery problems they told me to wait for ios 5.1 and to calibrate my iphone battery, I was also told that replacing the phone would not be a solution as it is a software based issue.

 

So I have been browsing the web on how to calibrate an iphone 4s battery and have found answers but they all seem different. Answers I discovered were:

 

1. 

  • We must let the iPhone runs the entire burden of the battery, i.e. use it until it shuts down for lack of battery.
  • After the iPhone battery has run out, we let it sit for about 6 to 8 hours.
  • After this time because we can connect it to boot to load, this process should be left between 6 to 8 hours. (While it may use its load without disconnecting from the mains.)
  • Once the load, you can enjoy your iPhone newly calibrated.

 

2.

 

"First, plug your device into a charger and let it charge fully – leave it charging for another hour or two after its fully charged. Then, remove from the charging source and use your device like normal. Do not plug it into a charging source, but use it until the device decides to power itself off due to low battery. When that happens, plug in your device into a charging source and let it charge fully. During this time, it is completely safe to use your device."

Im still not sure how to calibrate an iphone battery.

 

Can anyone please tell me the correct method?


iPhone 4S, iOS 5.0.1, (9A406)
Solved by brad805 on Dec 28, 2011 11:43 AM Solved

Calibrate iPhone Battery:

 

Use the iPhone until it it shuts OFF itself, due to Low Battery. Then Charge it back up without interruption, like unplugging it, to full charge 100%. Then before or after you do this, Reset iPhone, hold both home and power buttons until the iPhone restarts itself, ignore the "slide to power off slider", let the iPhone restart itself.

  • brad805 Level 5 Level 5

    Calibrate iPhone Battery:

     

    Use the iPhone until it it shuts OFF itself, due to Low Battery. Then Charge it back up without interruption, like unplugging it, to full charge 100%. Then before or after you do this, Reset iPhone, hold both home and power buttons until the iPhone restarts itself, ignore the "slide to power off slider", let the iPhone restart itself.

  • polad_sigari Level 1 Level 1

    charge the phone shut down or turn on charge?

  • paulcb Level 6 Level 6

    You don't need to turn it off when charging.  Just plug it in when fully depleted, let it turn on and then sleep, and don't unplug until fully charged. 

  • 7sk_city Level 1 Level 1
    expertise.windowssoftware
    Windows Software

    do I need to reset it (when it 100%) when it plugged in or i need to unplug it and reset? thanks

  • Meg St._Clair Level 9 Level 9
    expertise.iphone
    iPhone

    7sk_city wrote:

     

    do I need to reset it (when it 100%) when it plugged in or i need to unplug it and reset? thanks

    There is no need to perform this procedure at all. Apple has stopped recommending it. It never calibrated the battery. It calibrated the battery sensor, making the battery indicator on the phone somewhat more accurate. It never affected the behavior of the battery itself.

  • 7sk_city Level 1 Level 1
    expertise.windowssoftware
    Windows Software

    thank you for your reply. my iphone shuts off when the battery indicator shows 30%. i did dfu restore and now i want to calibrate the battery sensor so it shows the percentage more accurate.

  • Meg St._Clair Level 9 Level 9
    expertise.iphone
    iPhone

    7sk_city wrote:

     

    thank you for your reply. my iphone shuts off when the battery indicator shows 30%. i did dfu restore and now i want to calibrate the battery sensor so it shows the percentage more accurate.

    I doubt your problem would be solved by any attempts to calibrate the battery sensor. Make an appointment at the Genius Bar at your local Apple Store.

  • 7sk_city Level 1 Level 1
    expertise.windowssoftware
    Windows Software

    the issue began yesterday when i erased all settings and started using my phone as new. it has never happened before