Device shuts down even though 19% battery left

Originator:Pich.Dominik
Number:rdar://15057521 Date Originated:32.9.2013
Status:Open Resolved:New
Product:iPhone Product Version:iOS7 (iPhone 4s)
Classification:Power Reproducible:Rarely
 
Summary:
My iPhone 4s shut down with 19% battery why running Tweetbot and reading tweets via 3G network. Pushing the power button showed the "need to charge" pictogram. Immediately on connecting it to a charger the OS boots and shows 19% battery.

Steps to Reproduce:
1. Charge full in the morning
2. Let the device discharge until around 20%
3. Go walk the dog and surf the internet over shoddy 3G


Expected Results:
- see a battery warning 
- be able to continue to use it
- the device should shut down only when the battery is empty


Actual Results:
- no warning is shown
- the device simply shuts down (you see the spinner)


Version:
ios7 (on iphone 4s)

Notes:
Other users report the same issue: e.g. rdar://15056120


Configuration:
iphone 4s

Comments


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